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In the field of electronic manufacturing, we pursue not only high quality, but also perfection in product details. Therefore, when we transfer electronic-grade chemicals from the factory into the process, we must carefully select the most suitable pumping system. There are many key factors to consider, including material compatibility, performance requirements and applications. In this article, we will discuss the characteristics of electronic grade chemicals and provide practical advice on pump selection, so you can choose the most suitable pump equipment!

The Importance of Electronic-Grade Chemicals to the AI And Semiconductor Industries

AI applications have penetrated deeply into our daily lives, with AI technology is rapidly breaking through the imagined limitations and exhibiting remarkable performance in many applications. Manufacturers of AI-related technologies continue to optimize the accuracy, speed, and other items of AI chips, striving for higher computational efficiency. As the demand for R&D and production of AI chips continues to increase, it also drives significant growth in the market for electronic-grade chemicals in the semiconductor industry.

Especially in advanced manufacturing processes, the demand for purity of electronic-grade chemicals is increasing. The quality and purity of these chemicals are critical to the semiconductor manufacturing process, so the pumps used in the production process need to have specific specifications to meet stringent process requirements.

What Are Electronic-Grade Chemicals?

Electronic grade chemicals are mainly used for manufacturing precision device products. Common electronic-grade chemicals include various solvents, acids, alkalis, and other special chemicals. These solvents are specially formulated, with extremely high purity requirements, typically far exceeding the standards of general industry chemicals.

Common chemical fluids in industrial applications include IPA (Isopropyl Alcohol), DMSO (Dimethyl sulfoxide), Aceton, ETOH (Ethyl Alcohol), etc.

The Application of Electronic-Grade Chemicals

Use in semiconductor and optoelectronic industries, solvent chemical to remove photoresist, impurities, developer or etching.

The Key to Ensuring The Quality of Electronic Products: Quality Control of Electronic-Grade Chemicals

Electronic-grade chemicals are often used in the manufacture of semiconductors and other electronic components and must meet strict purity and quality requirements to ensure the performance and reliability of the final product. The quality of electronic-grade chemicals will directly affect the quality of electronic products. Therefore, special manufacturing and inspection procedures are usually required to ensure that their purity is maintained at the required standards and that they are free from any impurities that could potentially contaminate the semiconductor manufacturing process.

10 Types of Electronic-Grade Chemicals

There is a wide variety of electronic-grade chemicals, with common examples including the following acids and alkaline solutions:

  1. Electronic-grade Potassium Hydroxide
  2. Electronic-grade Sodium Hydroxide
  3. Electronic-grade Acetic Acid
  4. Electronic-grade Sulfuric Acid
  5. Electronic-grade Nitric Acid
  6. Electronic-grade Hydrochloric Acid
  7. Electronic-grade Phosphoric Acid
  8. Electronic-grade Copper Sulfate
  9. Electronic-grade Isopropyl Alcohol (IPA)
  10. Electronic-grade Acetone

In addition to the electronic-grade chemicals mentioned above, there are many other chemicals available in electronic-grade quality according to different process requirements to produce high-performance electronic products.

In terms of characteristics, these electronic-grade acids, alkalis, and alcohols are corrosive, flammable, and explosive. Therefore, more attention must be paid to safety during liquid transportation to prevent chemical leakage and potential danger.

The Key to Ensuring High Purity of Electronic-Grade Chemicals!

To maintain chemical purity, you must use professional pumps that meet process requirements.

PTCXPUMP metallic stainless steel magnetic drive pump uses SUS316L stainless steel as the standard material, which has excellent corrosion resistance. The sealless design can avoid chemical leakage causing operational danger and environmental pollution. Pumps are widely used in the semiconductor or PCB industry to transport purified chemical fluids and electronic-grade solvent products. They are used to clean and remove residual substances in the semiconductor manufacturing process, ensuring the purity of the surface of electronic components.

5 Advantages of PTCXPUMP Metallic Stainless Steel Magnetic Drive Pump in Electronic-Grade Chemical Transfer

In the transfer of electronic-grade chemicals, the use of metallic stainless steel magnetic drive pumps offers the following advantages:

  1. Suitable for high-purity processes to ensure that chemical properties are maintained during transportation.
  2. Corrosion-resistant, suitable for chemical environments.
  3. Leak-proof, ensuring safe operation.
  4. Unique structural design to improve production efficiency.
  5. Low maintenance requirements and extended equipment service life.

Due to the sealless magnetic pumps’ leak-free characteristics and their sturdy stainless steel material, they can cope with the corrosive challenges of various chemical fluids. In electronic-grade chemical applications, the "PTCXPUMP metallic stainless steel magnetic drive pump" can safely transport corrosive solvents while achieving industry-leading high efficiency, which can effectively reduce operation costs.

Professional Sealless Magnetic Drive Pumps Manufacturer: PTCXPUMP

PTCXPUMP helps you select the right pump, eliminating the risk of incorrect selection and cost waste. We also provide professional maintenance services to ensure the safe use of the equipment system. With over 40 years of profound pump experience, PTCXPUMP stands as the prime choice for customers seeking reliability. Since we are familiar with the importance of industrial characteristics for pump selection, we will help you tailor the most suitable pump based on pump performance, specifications, and operating conditions provided by customers. This not only improves equipment system efficiency but also reduces unnecessary energy consumption and maintenance costs.

If you are looking for a safe fluid transfer solution in electronic-grade chemical applications, please feel free to contact us and we will immediately assist you in selecting the appropriate type of magnetic drive pump.

Stainless Steel Mag Drive Pump in CCS Process

As the issue of climate change becomes increasingly prominent, carbon capture and storage technology has become an important part of mitigating greenhouse gas emissions. This article provides a preliminary understanding of the basic concepts and application methods of carbon capture and storage technology, as well as the key applications of PTCXPUMP metallic stainless steel magnetic drive pumps in the carbon capture and storage process.

Carbon capture and storage (CCS)

Carbon capture and storage (CCS) refers to the method of capturing and burying carbon dioxide, aiming to actively reduce carbon dioxide emissions and thereby slow down global warming. This technology first captures carbon dioxide from industrial emission sources, then stores it in deep underground or oceans, and then provides it to a variety of industries for use or conversion into chemicals, fuels, etc. CCS technology is suitable for most stationary carbon dioxide emission sources, such as oil refineries, natural gas power plants, steel plants and cement plants.

Stainless Steel Mag Drive Pump in CCS Process

How Does Carbon Capture Work?

  1. Pre-combustion capture (preCCC): Convert fuel into hydrogen and carbon dioxide through gasification, steam recombination or physical absorption in the reactor, and then separate the carbon dioxide.
  2. Post-combustion capture (postCCC): The most common method uses liquid carbon dioxide solvent to capture carbon dioxide from the flue gas after the fuel is burned. The flue gas generated after burning fuel and oxygen enters the absorber, where carbon dioxide is separated through a scrubbing process, and the remaining flue gas without carbon dioxide can be released into the atmosphere. The carbon dioxide then passes through the desorber, where the solvent containing the absorbed carbon dioxide is heated, and a chemical reaction occurs to separate the carbon dioxide, which is then captured and stored.
    Scrubber tower with similar principles, in-depth understanding of its operation and applications: [Environmental Technology Application]
  3. Oxy-fuel combustion:
    Fossil fuels burn in nearly pure oxygen air to produce flue gas containing carbon dioxide and water, with a concentration of carbon dioxide as high as 80-98%. The water in the flue gas is then condensed into liquid to increase the concentration of carbon dioxide. This flue gas is more easy to compress and store. Additionally, this method consumes less fuel and energy and produces fewer greenhouse gases than postCCC.

Carbon Sequestration

  1. Geological Carbon Sequestration: Inject the captured carbon dioxide into the porous rocks in deep underground geology for long-term storage. It is the most common and feasible storage method today.
  2. Oceans Carbon Sequestration: Store carbon dioxide in the ocean and dissolve it in seawater, or form solid carbon dioxide hydrates or liquid carbon dioxide lakes.
  3. Soil organic carbon (SOC): React carbon dioxide with metal oxides to form carbonate minerals.

Application Areas for Carbon Utilization

In addition to capturing and storing carbon dioxide, how else can the captured carbon dioxide be effectively used? Carbon dioxide can be used as an industrial resource. The following are the application areas of carbon utilization (CU):

  1. Exploitation of Oil: Carbon dioxide can be used directly. Pressurized carbon dioxide is injected into oil and gas layers to push the oil to the oil wells, improving the efficiency of oil extraction. At the same time, the carbon dioxide is also stored in the formation.
  2. Industry: Convert carbon dioxide into industrial fuels, such as natural gas, synthetic fuels, etc.
    For additional knowledge on synthetic fuels: [E-fuel Production Application for Stainless Steel Magnetic Drive Pump]
  3. Electrolyzer: Electrolyzer uses renewable energy, carbon dioxide and water to perform electrolysis to produce hydrogen.
    More about: [What Are the Advantages of Sealless Magnetic Drive Pumps in Hydrogen Electrolyzers?]
  4. Fertilizer Industry: Use carbon dioxide as a raw material for urea production.
  5. Food Industry: The bubbles in the carbonated drinks that everyone often drinks are carbon dioxide, which creates the excitement you feel when drinking them. In addition, it can also be used to assist in the sterilization process of food.

    Stainless Steel Mag Drive Pump in CCS Process

Application of Sealless Magnetic Drive Pump in Carbon Capture Process

  1. Transporting Liquid Carbon Dioxide: After successfully capturing carbon dioxide, it needs to be converted into a liquid state so that it can be transported to a suitable storage location. Sealless mag drive pumps are ideal for pumping liquid CO₂ because you don’t have to worry about leaks when using them.
  2. Delivery of Liquid Solvent: In the process of capturing CO₂ after combustion, in order to effectively adsorb CO₂, it is usually necessary to use a specific liquid solvent. These solvents play a key role in the capture process, and to ensure its smooth operation, we rely on sealless magnetic drive pumps to deliver liquid solvents efficiently and reliably.

Advantages of PTCXPUMP Metallic Stainless Steel Magnetic Drive Pump in CCS Applications

In carbon capture and storage technology, the use of metallic magnetic drive pumps has the following advantages:

  1. Corrosion-resistant, suitable for chemical environments
  2. Non-seal sealless design to prevent leakage and ensure safe operation
  3. Excellent performance, efficient and reliable
  4. Unique structural design to improve production efficiency
  5. Low maintenance requirements and extended equipment service life

The mag drive pump has the characteristics of no leakage, and the metallic stainless steel material ensures corrosion resistance to various chemical fluids. In the CCS process, the PTCXPUMP metallic magnetic drive pump can safely transport corrosive capture solvents while effectively reducing your operating costs.
Reducing carbon emissions and effectively utilizing carbon dioxide has become the goal of governments, organizations and enterprises around the world. They continue to pursue the sustainable development of the earth. PTCXPUMP will work with you to contribute to net-zero emissions!

PTCXPUMP specializes in providing sealless magnetic drive pumps, integrating R&D, production, sales, and after-sales service to provide a full range of services. If you are looking for a transportation solution that improves efficiency in the field of carbon capture and storage applications, or want to know more about the application of sealless magnetic drive pumps in CCS application, please feel free to contact us at any time, and we will immediately assist you in choosing the suitable magnetic drive pump.

Stainless Steel Magnetic Pump in Biomass Fuel Production

What is biofuel?

Biofuel is a renewable energy source that is liquid fuel converted from biomass. The raw materials are usually organic matter from plants and animals. This type of fuel includes biodiesel and bioethanol, which are usually made from agricultural waste, vegetable oil, etc.
The main purpose of biomass fuel is to replace traditional petroleum fuels, effectively utilize biomass energy resources, and have low carbon dioxide emissions. Biofuels can be used in a wide range of applications, including energy production, transportation, and industrial manufacturing.

Biofuel manufacturing process

1. Biomass collection: The manufacture of biomass fuel usually uses biomass as raw materials, including barley, wheat, corn, rice, sugar beet, sweet sorghum, sweet potato and other grains; agricultural waste such as wheat straw, rice straw, corn stalks; and other fibrous crops such as seaweed can be obtained from agricultural, forestry or industrial processes.

Stainless Steel Magnetic Pump in Biomass Fuel Production

2. Conversion process:

  • Biodiesel manufacturing: Triglycerides and alcohols, which are the main components of vegetable oils and animal oils, are added with catalysts to undergo chemical reactions to generate fatty acid esters, whose properties are very similar to diesel. Through the above-mentioned transesterification reaction, vegetable oil or animal oil is converted into biodiesel.
  • Bio-alcohol production: Grains or plant fibers are fermented by yeast to decompose the sugar in the raw materials to produce hydrous alcohol with a concentration of about 13~17%. Then, distillation is used to separate the water and ethanol to produce anhydrous bio-alcohol with a concentration of up to 95%.

Stainless Steel Magnetic Pump in Biomass Fuel Production

Advantages of biofuels

  1. Renewability: Energy can be provided by continuously growing and recycling organic matter. Compared with fossil fuels, which have limited resources, biomass fuels can help slow down the problem of energy depletion.
  2. Reduce greenhouse gas emissions: The amount of carbon dioxide produced by the combustion of biomass fuel is basically equal to the amount of carbon dioxide absorbed by biomass raw materials, so it has less impact on the environment than petroleum fuel.
  3. Environmentally friendly: Since biomass fuel can be biodegraded, even if it is accidentally spilled into the environment, it is less likely to pollute the environment than other fuels.

Biomass fuel is an environmentally friendly and sustainable energy source, and its manufacture and use help mitigate climate change and protect the environment.

Stainless Steel Magnetic Pump in Biomass Fuel Production

In what fields or equipment are biomass fuels used?

Biomass fuel has various application areas, mainly used in the following fields or equipment:

  1. Transportation: Biomass fuel is widely used in vehicles, aircraft, ships and other transportation vehicles. Biodiesel and bioalcohol are among the more common biofuels used in transportation. They can be used to replace petroleum fuels or be added to gasoline. They can not only improve fuel efficiency but also reduce exhaust emissions.
  2. Energy production: Biomass fuel can be used in power stations to replace traditional natural gas or coal as fuel for power generation.
  3. Heating systems: Biomass fuel can be used in heating systems to replace traditional natural gas or oil fuels.
  4. Industrial processes: For example, used in steelmaking, petroleum refining and other high-temperature processes, the use of biomass fuel in industrial boilers helps reduce carbon dioxide emissions.
  5. Agriculture: In the agricultural field, agricultural waste can be used to produce biomass fuel, and it can also be used as fuel for agricultural machinery.
    Biofuels can be valuable in a variety of applications, helping to reduce dependence on fossil energy while promoting the development of green energy sources.

PTCXPUMP metal stainless steel magnetic pump is suitable for biomass fuel production process

In the biomass fuel production process, we particularly recommend the PTCXPUMP metallic stainless steel magnetic drive pump, which provides excellent performance, especially in the key steps of biomass conversion:
In the process of converting biomass raw materials into usable liquid fuels, the PTCXPUMP metallic stainless steel magnetic drive pump can transport biomass diesel or biomass alcohol during the fermentation process, effectively processing solid particles and impurities in the biomass fuel, and the stainless steel material can ensure the product purity. The non-seal sealless design prevents the risk of leakage and improves the safety and reliability of operation.

Stainless Steel Magnetic Pump in Biomass Fuel Production

Sealless Magnetic Drive Pumps in the E-Fuel Production Process

What is Synthetic Fuel?

Electronic fuel (e-fuel) is a synthetic fuel that uses green hydrogen generated from renewable energy sources (such as solar or wind energy) and carbon dioxide recycled from power plants and factories or carbon dioxide in the atmosphere as raw materials. It is an alternative to petroleum fuels and is composed of hydrocarbons similar to traditional fossil fuels. However, unlike conventional fossil fuels, synthetic fuel does not emit carbon dioxide into the atmosphere during its lifecycle, so it can be called a carbon-neutral fuel.

Manufacturing Process of e-fuel 

  1. Raw Material Production
    Hydrogen Production: Renewable energy sources such as solar or wind power are used to electrolyze water and produce green hydrogen.
    Carbon Dioxide Capture: Carbon dioxide is collected from industrial emissions or recovered from the atmosphere.
  2. Synthesis Gas Production
    Reaction of hydrogen and carbon dioxide: Hydrogen and recovered carbon dioxide react to generate methanol. Methanol is then further processed by adding additional carbon compounds to achieve a structure and properties similar to gasoline, making it a suitable substitute for gasoline and diesel.
  3. Fischer–Tropsch Process
    Synthetic Crude Oil Production: Using FT synthesis reactors, the synthesis gas is introduced to catalysts and converted into liquid fuel, known as synthetic crude oil. Synthetic crude oil has a chemical structure similar to petroleum.
  4. Product Refining
    Fuel Product Manufacturing: Refining and upgrading synthetic crude oil to create a variety of fuel products, including gasoline, kerosene, jet fuel, etc.
    To put it simply, the entire manufacturing process uses hydrogen and carbon dioxide as raw materials, synthesizes gas through chemical reactions, then produces synthetic crude oil through FT synthesis reaction, and finally refines to produce synthetic fuels similar to traditional petroleum fuels.

Sealless Magnetic Drive Pumps in the E-Fuel Production Process

Advantages of e-fuel

  1. High Energy Density: It has high energy density similar to fossil fuels.
  2. Compatibility with Existing Facilities: It can be used with existing fuel infrastructure.
  3. Can Be Produced Outside The Resource Country: It is not limited to the distribution of natural resources in the specific region.
  4. Lower Environmental Load: The use of green hydrogen in the production process and the absence of carbon dioxide emissions throughout its lifecycle result in a lower environmental footprint.

Synthetic fuel offers the performance of fossil fuels while achieving a low-carbon footprint during the manufacturing process. It is considered a potential carbon-neutral alternative to the environmental problems posed by fossil fuels.

Sealless Magnetic Drive Pumps in the E-Fuel Production Process

Applications of Synthetic Fuel in Several Industries

  1. Transportation
    -Automobiles: Synthetic fuels can be used as fuel for fuel vehicles using internal combustion engines, especially during the transition period from traditional fuel vehicles to electric vehicles and fuel cell vehicles, which is providing a major solution.
    -Aircraft: Aircraft that fly long distances, such as civil aviation and military aircraft, can use synthetic fuel as a renewable aviation fuel.
    -Ships: For transportation vehicles that are difficult to electrify, such as large ships and yachts, synthetic fuels are quite suitable.
  2. Energy Production
    -Generators: Synthetic fuel can be used in generators to provide power supply, particularly in applications that require energy storage.
    -Backup Power: Synthetic fuel can serve as an energy transport medium for backup power, ensuring a stable electricity supply.
  3. Industrial Applications
    -Manufacturing Industries: Synthetic fuel can be used as an energy source in manufacturing processes, such as high-temperature reactions.
    -Heating: Synthetic fuel can be used for heating applications, such as heating, drying, etc.
  4. Agriculture
    -Agricultural Machinery: Synthetic fuel can be used in agricultural machinery, such as tractors and harvesters, reducing dependence on traditional fuels in the agricultural industry.
    Synthetic fuel has a wide range of potential applications and can provide clean and sustainable energy solutions across various industries.

How Can PTCXPUMP Sealless Magnetic Drive Pumps Help in the Production Process of e-fuel?

In the production process of synthetic fuel, sealless magnetic drive pumps, such as PTCXPUMP, are commonly used in the following areas:

  1. Product Refining Stage
    - PTCXPUMP's stainless steel magnetic drive pumps can transport the manufactured synthetic crude oil or other synthetic products to subsequent refining or processing systems. The sealless design ensures leak-free fluid transfer, preventing product contamination.
  2. Liquid Product Transport
    - When synthetic fuel products are produced, they need to be transported to different storage containers. In this case, PTCXPUMP's metallic magnetic drive pumps are recommended for liquid fuel transportation, ensuring safe and efficient delivery without the risk of leakage.

PTCXPUMP's stainless steel sealless magnetic pumps are specifically designed for optimal application in the synthetic fuel production process, providing reliable fluid handling performance without concerns of leakage. This helps minimize environmental impact and allows for the safe and efficient transportation of synthetic fuel to various storage equipment.
By utilizing PTCXPUMP's metallic stainless steel magnetic drive pumps, with their excellent corrosion resistance and durability, the synthetic fuel production process can achieve efficient and sustainable production, contributing to a greener and cleaner future.

Sealless Magnetic Drive Pumps in the E-Fuel Production Process

Advantages of sealless magnetic pumps in hydrogen production and storage applications

With the continuous development of modern industry and technology, exhaust gas pollution has become a major issue, and hydrogen, as a clean and efficient energy carrier, has attracted more and more attention. Previously, PTCXPUMP shared the application of hydrogen energy, the concept of hydrogen economy and hydrogen production technology. If you want to have a preliminary understanding of hydrogen energy, you can refer to:Applications of Hydrogen Energy and Applicable Pumps.

Next, we will introduce the very important equipment in the hydrogen energy industry—electrolyzer and hydrogen storage tanks. Since hydrogen is an explosive gas, and hydrogen molecules are small and easy to leak, the safety of hydrogen storage tanks and transportation is crucial. As an advanced pumping technology, sealless magnetic drive pumps are increasingly used in hydrogen generation electrolyzers. This article will introduce the use environment of sealless magnetic drive pumps in electrolyzers, and discuss the application of pumps in hydrogen storage and transportation.

How Do the Sealless Magnetic Drive Pumps Work? Features of the Sealless Magnetic Drive Pump

The sealless magnetic drive pump is a pump driven indirectly by magnetic force. It mainly uses the combination of outer magnet and inner magnet to generate a magnetic field, which provides power to the impeller to drive the pump to transfer liquid. The sealless magnetic drive pump has the characteristics of no leakage and safe use. It can be widely used in many corrosive, toxic, flammable and explosive environments.

For more features of sealless magnetic pumps, please refer to the detailed introduction:【What's A Sealless Magnetic Drive Pump & How Does It Work?

Advantages of sealless magnetic pumps in hydrogen production and storage applications

Application of Pumps in Hydrogen Storage Tanks

In hydrogen storage tanks, pumps are mainly used in the following aspects:

  1. Hydrogen Delivery

    Common hydrogen storage methods are divided into "Compressed Hydrogen", "Liquefied Hydrogen", "Metal Hydrides" and "Carbon Nanotubes". Among them, high-pressure hydrogen storage and liquid hydrogen storage are relatively mature technologies today. The principle of high-pressure hydrogen storage is to compress hydrogen under high pressure and store it in a high-density gaseous form in a high-pressure container. It is currently the most common hydrogen storage method. Pumps are mainly used to transport hydrogen from production equipment or pipelines to storage tanks.

  2. Hydrogen Recovery

    The pump can be used to recover used hydrogen into the storage tank, realizing hydrogen recycling and reducing energy consumption.

Application of Sealless Magnetic Drive Pump in Hydrogen Electrolyzer

When it comes to the types of hydrogen, it is divided into gray hydrogen, green hydrogen, blue hydrogen, brown hydrogen, etc. Regarding their manufacturing methods and differences, as well as the electrolysis technology for hydrogen production, you can also read in the article【Applications of Hydrogen Energy and Applicable Pumps】to know.

In hydrogen electrolysis technology, sealless magnetic drive pumps can help you successfully perform the following tasks.

  1. Deliver electrolyte
    The sealless magnetic drive pump is used to stably transport the electrolyte to the electrolytic tank. Since the electrolyte is mostly chemically corrosive, care must be taken not to leak during the delivering process. In this case, a sealless magnetic drive pump made of corrosion-resistant materials must be used. Its characteristics ensure the continuity and stable operation of the hydrogen production process.
  2. Cooling system
    During hydrogen production, hydrogen and oxygen are electrolyzed and separated, which must be output after washing, gas-liquid separation, cooling, purification, deoxygenation, and drying, and finally high-purity hydrogen is obtained. The cooling step is because the temperature of the alkaline solution will rise when electrolyzing water. In order to control stability, the temperature of the alkaline solution in the electrolyzer must be maintained at 85-90°C, so it must be cooled down. There is a cooling water tank in the system. The coolant should be water with high purity, without any acidity or alkalinity. The coolant is transported to the cooler through a sealless magnetic drive pump to ensure the purity of the coolant.

Advantages of Sealless Magnetic Pumps in Hydrogen Production and Storage Applications

In the hydrogen production process, the use of sealless magnetic drive pumps has the following advantages:

  1. Ensure safe operation
  2. Improve production efficiency
  3. Reduce energy consumption
  4. Extend the service life of equipment

Due to the leak-free characteristics of the mag drive pump, by using it in hydrogen production technology equipment, it can not only safely avoid the hidden worries of electrolyte and coolant leakage, but also effectively reduce your operating costs.

As the demand for hydrogen energy continues to grow, the scale of the production end will inevitably expand, and the global hydrogen economy will have the opportunity to develop rapidly. How to take advantage of the upstream hydrogen production and hydrogen electrolyzers?

◆ Confirm the process environment → Consult with professional pump suppliers → Complete evaluation → Correct selection

PTCXPUMP specializes in providing sealless magnetic drive pumps, integrating R&D, production, sales, and after-sales service to provide a full range of services. If you are looking for a transportation solution that improves efficiency in the field of hydrogen energy applications, or want to know more about the application of sealless magnetic drive pumps in hydrogen production, please feel free to contact us at any time, and we will immediately assist you in choosing the suitable magnetic drive pump.

When you purchase a new fluid equipment, the manufacturer needs the user to provide a series of operating conditions. For example, when purchasing chemical pumps, you need to provide basic operating conditions such as head and capacity. Probably this is the common experience of lots of people, and it may make people feel a little troublesome, but because chemical pumps are specially designed for the special needs of the chemical industry, most of the chemicals are dangerous, so compared with the water pumps, there are of course more factors to consider before deciding on an appropriate chemical pump. There are mainly 10 things, which are items that manufacturers must confirm with customers first.

1. What Should Be Pumped?

First, must know what the chemical fluid to be transfered is. Since the characteristics of chemical fluids will directly affect the type and material of chemical pumps used, understanding the characteristics of chemical fluids is the most preliminary task for pump selection. The fluid properties include corrosiveness, temperature, viscosity, concentration, specific gravity and impurities.
For the relevant technical terms of the pump, there is a detailed explanation in this article: What are the considerations when choosing a pump? It can be read to understand more about this.

2. What Is the Amount of Fluid Will Be Pumped?

The capacity refers to the volume of fluid that the pump needs to deliver per unit time, and indicates the flow rate and amount of the fluid passing through the pump during delivery. It is usually denoted by the letter Q, the unit of measurement is: LPM, m³/h or m³/s. The amount of flow will affect the size of the pump and the diameter of the piping.

3. How Much Is the Working Pressure?

Working pressure is the force required to move fluid through the system. If the range of working pressure is too high or too low, the expected delivery effect cannot be achieved. Therefore, it is necessary to consider whether to use a chemical pump with good pressure resistance to meet the operating range of the system.

4. How High Is the Maximum Head?

The height to which the fluid needs to be moved, which means the vertical height from the fluid source surface to the final outlet, in m. The density of the transported liquid, the diameter of the impeller and the number of stages of the impeller will all affect the height of the head.

5. What Is the Connection Type?

Regarding how to connect and fix the pump and the pipeline, flanges, unions or hoses are usually used. In the application of medium and large pumps, the flange form is often used as the main connection method. Different types of chemical pumps are also equipped with flange types of different specifications.
To get more information of flange, please refer to the following three articles about flange.
Article1:What is a Flange? What are the types of flanges?
Article2:5 Types Commonly Used Flange Faces
Article3:Flange Standards (ANSI, JIS, DIN, GB)

6. What Is the Connected Motor Type?

Generally speaking, most pumps need to be connected with a motor and a power as the source of power for the pump (except for specific types of pumps, such as air-operated diaphragm pumps, etc.). When using it with a motor, you need to pay attention to whether there will be failures such as motor burnout. Depending on the application and working environment, the type and specification of the motor are also different.
More about motors:What are the considerations for motor selection?
What’s the Difference between Normal Motors, Inverter Duty Motors, and Explosion-Proof Motors?

7. What area is it used in?

When chemical pumps are used in the semiconductor industry, PCB industry, medicine and food industry, etc., when the cleanliness is in high demand, it is necessary to use pumps made of specific materials, such as stainless steel SUS316L; or in other special environmental conditions, such as using pumps located in coastal areas are prone to corrosion due to the extremely high salinity of seawater. Both pumps and motors require special coatings to prevent erosion by seawater or rain.
For applications such as chemical industry, semiconductor industry, wastewater treatment, energy and environmental protection, petrochemical industry, food industry, pharmaceutical industry, etc., PTCXPUMP is a reliable partner of domestic and foreign manufacturers, and can provide customized and safe magnetic drive pumps according to the operating environment.

8. How Often Will the Pump Be Operating?

Pumps that run continuously for long periods of time must be constructed of stronger materials to increase durability and extend their service life than pumps that are run only once in a while. When the pump is running without any fluid, it must also be ensured that dry running will not happen, otherwise the motor may burn out very quickly.

9. How to Protect the Pump?

In order to prevent pump failure, causing downtime and increasing operating costs, the pump is best use with a dry running protector. Thedry running protectoris used to monitor the current or power of the motor during operation. When the current is too high or too low, it will immediately issue an alarm or automatically shut down the motor. This function greatly reduces the probability of pump failure and maintenance costs. Based on safety and cost considerations, the optional dry running protector is also a machine that cannot be missed.

10. Should Maintenance Work Carried Out by Myself?

To ensure the longevity and efficiency of chemical pumps, proper maintenance and care is essential. Although self-maintenance can save a little cost, entrusting it to a manufacturer with good service, the maintenance of its professionals can guarantee the maintenance of product quality and operational efficiency.
Some ways you can extend pump life: Pump Maintenance Guide

PTCXPUMP provides you with chemical sealless magnetic drive pumps, which are widely used in a wide range of applications.Contact us and provide your requirements, we will assist you in accurate selection and providing the most appropriate pump. The maintenance problems after the products are used can also be entrusted to us with peace of mind. PTCXPUMP has the warehouse and repair factory, and can help you solve any product problems with instant and perfect after-sales service.

The average annual maintenance and operating costs of the pump are higher than other types of rotating machinery. As the main force of the factory, its energy consumption accounts for one of the highest proportions among many industrial equipment. Especially in the chemical industry, because it relies on chemical pumps to transport some corrosive liquids, the time and expense spent on operation and maintenance cannot be underestimated during the entire life cycle of the chemical pumps. Therefore, how to reduce the damage rate of the chemical pump and increase its production capacity has become a common topic for all factories.

Of course, it is well-known to try our best to achieve ‘energy saving’. However, in addition to saving energy consumption of chemical pumps, if we want to have a great effect in reducing costs and increasing factory output, we must also improve the ‘reliability’ of pumps. In order to make the chemical pump run more smoothly, the following methods can be adopted. To save pump energy, these are the ways: 10 Tips on Energy Saving in Pumping Systems

Of course, it is well-known to try our best to achieve ‘energy saving’. However, in addition to saving energy consumption of chemical pumps, if we want to have a great effect in reducing costs and increasing factory output, we must also improve the ‘reliability’ of pumps. In order to make the chemical pump run more smoothly, the following methods can be adopted. To save pump energy, these are the ways: 10 Tips on Energy Saving in Pumping Systems

1. Proper Design and Equipment

Using the proper pump is the first step in building a reliable pumping system. The specifications should meet the operation requirements. Many factors must be taken into consideration, such as flow rate, head, fluid characteristics, operating temperature and pressure, etc., and then accurately select the most suitable model according to the pump performance curve, even under dynamic operating conditions. It can also prevent the chemical pump or parts from overloading and excessive vibration to shorten the service life. How to read the performance curve: Easy Way to Understand the Pump Performance Curve

In addition, fatigue wear and cracked surfaces of components are the root causes of pump failures. The fatigue life of components under cyclic or dynamic loading can be programmed to be infinite. For those components that have previously broken, the design can be redeveloped to increase the expected fatigue life as the cyclic loading and associated stresses are reduced.

2. Operational Status Monitoring

As we often mentioned, the pump needs regular health checks, but in order to grasp its performance in a more timely and comprehensive manner, preventive maintenance must be done, and use the professional status monitoring tools. The purpose of continuous monitoring is to prevent failures such as process delays or downtime, and expensive repair costs.

3. Prevent Leakage Problem

If a chemical pump leaks when delivering fluid, it will be a hazard to the operator and the environment, and you will also have to bear the cost of cleanup and material loss. The sealless magnetic drive pump completely seals the fluid in the chamber, which can successfully avoid leakage concerns. The simple structure makes maintenance more convenient and the maintenance frequency can be reduced. In addition, its excellent corrosive fluid handling ability can help your factory to improve productivity. In terms of fluid delivery, the sealless magnetic drive pump can provide an absolutely reliable solution.

4. Pump Packages and Transport

The size of the wooden box for packing the pump must match the size of the product. For different pumps, the transport boxes are different. Try to avoid

damage to the pump and parts during the process of moving and transporting. If you consider environmental protection and operation, you can also replace disposable materials with reusable materials


If you want to build a reliable chemical pump system, please refer to the above four methods to improve pump performance and reliability, but it is also recommended to consult professionals in advance to achieve the desired results.


At PTCXPUMP, we offer reliable sealless magnetic drive pumps. Contact us and a professional team will work with you to help you choose the best chemical pump and increase pump capacity according to actual operating conditions!

various bearings

Bearings are fixed parts required for mechanical operation, which can keep the shaft at the center and guide the gearing of other parts.


Bearings have a limited service life, and improper use or other factors will accelerate bearing damage, so regular replacement and maintenance are indispensable. If you don’t want to worry about this anymore, you can use the following 7 ways to effectively reduce the risk of damage to mechanical equipment and prolong bearing life.


  1. Proper Lubrication

    Regular replenishment or replacement of correct, high-quality lubricants, keeping the bearings lubricated is primary, and the oil film surface can minimize the wear of the parts when they are in contact. For equipment operating at high speed, the lubricant can also take away the heat generated by the internal friction of the bearing to achieve the effect of heat dissipation and cooling. The lubricant can use oil or grease, try to choose the lubricant recommended by the original equipment manufacturer (OEM).

    Of course, the lubricant also has a fixed lifespan. When the lubricant loses a certain viscosity and lubricity, it will cause churning, or the bearing will stop suddenly and cause system shutdown. Therefore, it is also necessary to pay attention to the replenishment of lubricant.

    Lubricate the bearings to prolong their service life.

  2. Mount the Bearings Correctly

    Since the correctness of the bearing installation directly affects the life and mechanical precision, so the correct method and special tools should be used in the process of mounting and dismounting the bearing.

    After installation, it is also necessary to check the installation position, whether the radial clearance of the bearing is just right to rotate flexibly without vibration, whether the lubricant can flow into the bearing smoothly, and confirm whether there is light leakage around the bearing and the shoulder. If there is no light leakage, it means the installation is correct; if there is light leakage around the shoulder, it means that the installation is incorrect, and the bearing needs to be adjusted to make the two close.

    Assemble the bearing to ensure the accuracy of the bearing installation.

  3. Prevent Pollution

    Clean bearings: Bearings are precision components and should be stored horizontally in a clean, dry environment to avoid exposure to any air pollutants. Even the slightest contamination can impair performance, so keep the packaging intact and airtight until ready to use.
    Clean lubricant: In addition, under long-term use, the lubricant will also contain pollutants. In order to prevent the bearing from being worn by particles, the only way to keep it clean is to replace it with new lubricant.

  4. Appropriate Seal Type

    The bearing needs to have good sealing performance. If the sealing is not good, dust particles, liquid and other pollutants will enter the bearing, resulting in wear of parts, and due to the leakage of lubricant, it will seriously cause product and environmental pollution. Choose a suitable seal type can help preventing these problems.
    Whether it is temperature or lubricant, there are many factors that affect the sealing type of the bearing, mainly divided into contact seals, non-contact seals, and labyrinth seals.

    • Contact seals: Also known as the lip seal, pressure is exerted on the inner ring of the bearing so that the seal and the bearing come into contact. Since it is in the form of direct contact, there is no gap between the seal and the rotating shaft, and it is easy to generate heat due to friction during rotation, so it is only suitable for medium and low speed operating environments.
    • Non-contact seals: The seal is fixed on the outer ring and will not exert pressure on the bearing of the inner ring. There is no contact between the seal and the bearing parts. There is a gap between the seal and the rotating shaft, so there is no friction and wear problem under normal operating conditions, and it can also prevent overheating.
    • Labyrinth seals: A more complex labyrinth seal is a bearing isolator that combines contacting and non-contacting sealing elements in one assembly. A labyrinth seal consists of a stationary and rotating part that interlocks the two, and its structure creates small tortuous gaps that make it difficult for substances to escape or penetrate the bearing. Labyrinth seals combine the advantages of contact and non-contact seals, providing the sealing capabilities of contact seals without the frictional overheating problems like non-contact seals.

    However, you get what you pay for, and the price of labyrinth seals with high complexity is of course higher than other seals. Therefore, the most suitable seal type must be evaluated according to the equipment and operating environment.

  5. Adjust Load and Bearing Size

    If the bearings do not match the load requirements, wear problems will still occur during high-speed operation, which can be solved by changing the total load of the system or using suitable bearings.

  6. Prevents Rust and Corrosion

    Exposure to water for a long time will cause rust and corrosion, and may even fall off during operation, and affect the performance of the mechanical system, so special attention should be paid to dry storage, and gloves must be worn when handling to avoid contact with sweaty hands.

    Wear gloves to remove bearings to avoid rust and corrosion.

  7. Inspection and Maintenance

    Finally, be sure to take regular maintenance and inspections, such as checking the degree of wear, cleaning the bearings with cleaning oil (gasoline, kerosene), etc., so as to ensure the best performance of the bearings and prevent any abnormal conditions of parts or equipment. This is one of the most basic ways to extend bearing life.
    Pump Maintenance Points: Pump Maintenance Guide

However, an ounce of prevention is worth a pound of cure, and here comes an easier and more cost-effective way to solve the above bearing problems!

PTCXPUMP Sealless Magnetic Drive Pump that Can Be Safely Applied

In the use of the pump, in order to reduce the frequency of replacing parts as much as possible, it is recommended to use the PTCXPUMP sealless magnetic drive pump. Compared with the traditional mechanical seal pump, the sealless design can effectively avoid leakage, and there will be no fluid leakage or work safety problems. This aspect is also helpful for improving efficiency.

The bearing part is made of SiC (silicon carbide) material, which has excellent corrosion resistance and high wear resistance. The patented design of the internal flow channel of the bearing allows the fluid to pass through the interior quickly, which not only has the function of instant lubrication, but also can quickly take away the mechanical heat generated by the operation. Since the chemical fluid is not easy to remain, the problem of the pollutants mentioned above is reduced, and there is no need to replace the bearing frequently like ordinary bearings, and at the same time, the possibility of the shaft being stuck due to fluid crystallization is greatly reduced.

In addition, it is made of engineering plastic or metal, which has excellent corrosion resistance and is suitable for transporting highly corrosive liquid such as hydrochloric acid, sulfuric acid, hydrofluoric acid and acetic acid or flammable and explosive fluids.

PTCXPUMP sealless magnetic drive pump has various models to meet your various operating requirements.

Contact us and our professional team will work with you. According to the actual operating conditions, to select the best pump for you. By choosing the correct type of pump to extend the pump service life, so as to reduce production costs.

When we use the pump, in order to maintain its performance and avoid operational problems, there are some maintenance and methods of routine job that need to be understood. The following will introduce how to maintain and inspect the pump to extend the service life of the pump, in order to reduce maintenance costs.

According to the difference in initiative, the types of maintenance are mainly divided into corrective maintenance and preventive maintenance.

What is Corrective Maintenance?

Corrective maintenance: When the pump leaks, the efficiency decreases, stops or the motor failure, resulting in production loss, it is necessary to quickly purchase or install spare parts in an emergency to restore the equipment system to an operational condition.

What is Preventive Maintenance?

Preventive maintenance: Routine or regular (hourly, daily, weekly, monthly, yearly) scheduled inspections aimed at maintaining the equipment in its current state and preventing malfunction, by dismantling devices, replacing seals such as gaskets or mechanical seals, and checking the pump's external and internal parts for wear.

In addition to the necessary to ensure that the pump can operate normally after started through some inspection steps, carrying out the routine preventive maintenance through the following checklists is also a point of pump protection.

Routine inspection:

1. Check the pump body, connection plate and base plate are corroded or damaged.
2. Check whether there is leakage between the pump and the piping.
3. Whether the surface of the motor is damaged or corroded.
4. Whether the pump is operating normally, and check there is any abnormal noise or vibration.
5. Confirm the flow and pressure at the pump inlet.
6. Confirm the flow and pressure at the pump outlet.
7. Confirm the liquid height in the tank.
8. Whether the motor current value is within the rated range.

If there are spare parts, it is also necessary to test run frequently and check whether they can work normally.

Regular inspection:

(depending on the usage conditions and hours, about once every 3 to 6 months)

1. Front casing, rear casing
Check for cracks, abnormal wear, crystallization, or foreign matter attached.

2. Gasket
Check for deformation, corrosion, or swelling.

3. Impeller and inner magnet
Check for scratches or cracks, crack or crystallization on bearings, bearing wear or tear, deformation of the impeller, etc.

4. Shaft
Check for scratches or cracks.

5. Rear casing
Check for corrosion, cracks, holes and scratches.

In addition to the above-mentioned maintenance and detection methods, preventive maintenance also includes the use of monitoring technology to determine the current operating status of system equipment. In order to correct the pump problem before it occurs, the current or power of the pump motor can be monitored by using PTCXPUMP dry run protector. When the current is too high or too low, an immediate warning or automatic shutdown will be issued, which greatly reduces the pump failure probability and maintenance costs.

Considering preventive maintenance, PTCXPUMP sealless magnetic drive pump can reduce the cost of preventive and corrective maintenance because of its simple structure and high durability.

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 PTCXPUMP Sealless Magnetic Drive Pump

Speaking of flanges, in addition to connecting or closing the pipes, when installing pumps, flange is significant for connected with pipe. After understanding the basic types of flanges and flange faces, the flange standard specification, its resistance pressure capacity, the flange thickness, and applicable countries, also need to be paid attention when selecting.

What are the standards of flanges?
The common flange standards are ANSI, DIN, JIS, GB.
ANSI is most commonly specified in the United States.
DIN is usually specified in Europe.
JIS specifies the standards used for industrial activities in Japan.
GB is the national standard of People's Republic of China.
The international flange standards are mainly use ANSI and DIN, but the flange connection dimensions of these two standards are completely different and unable to exchange.

Pressure Ratings: 150 LB, 300 LB, 400 LB, 600 LB, 900 LB, 1500 LB, 2500 LB
Flange Types: slip on flange, welding neck flange, threaded flange, lap joint flange, socket weld flange, blind flange
Flange Faces: flat face, raised face, ring type joint, male and female, tongue and groove

2. DIN
Pressure Ratings: PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160, PN250, PN320, PN400
Flange Types: slip on flange, welding neck flange, threaded flange, lap joint flange, blind flange
Flange Faces: raised face, ring type joint, male and female, tongue and groove

3. JIS
Pressure Ratings: 5K, 10K, 16K, 20K, 30K, 40K, 63K ( 'K' is the unit of pressure rating used in Japan.)
Flange Types: slip on flange, welding neck flange, threaded flange, lap joint flange, socket weld flange, blind flange
Flange Faces: flat face, male and female, tongue and groove

4. GB
Pressure Ratings: 〔series 1〕PN1.0, PN1.6, PN2.0, PN5.0, PN10.0, PN15.0, PN25.0, PN42.0
                              〔series 2〕PN0.25, PN0.6, PN2.5, PN4.0
DIN: PN0.25, PN0.6, PN1.0, PN1.6, PN2.5, PN4.0
Flange Types: slip on flange, welding neck flange, threaded flange, lap joint flange, blind flange
Flange Faces: flat face, raised face, male and female, tongue and groove

ANSI: PN 2.0, PN 5.0, PN 10.0, PN 15.0, PN 25.0, PN 42.0
Flange Types: slip on flange, welding neck flange, threaded flange, lap joint flange, socket weld flange, blind flange
Flange Faces: flat face, raised face, ring type joint, male and female, tongue and groove

The above are the basic flange standards. When considering the flange to be installed with the pump, it is recommended to consult with professionals before selecting.

PTCXPUMP sealless magnetic drive pump provides standard flange specifications(ANSI,JIS,DIN) for easy pipeline connection. It can adjust screw hole position to avoid leakage of inlet and outlet.

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 PTCXPUMP Sealless Magnetic Drive Pump

Flanges play an important role in connecting pipes, besides knowing the basic types of flanges, it is necessary to further understand the form and application of flange faces. In addition, since the specifications of flanges are very diverse, the standard classification of flanges also needs to be paid attention to when selecting them. The common flange standards will be introduced in the next article.


What are the commonly used flange faces?

flange faces

1. Flat Face (FF): The smooth surface and simple structure make it easy to process the corrosion-resistant lining. Using full-face gasket to cover the entire flange sealing surface. Due to the large contact area between the sealing surface and the gasket, after pre-tightening, the gasket is easily moved to both sides and be squeezed out of the sealing surface. It is well suited to low pressure and low temperature applications. Flange gaskets are generally divided into metal gaskets and non-metal gaskets, flat face flanges use non-asbestos gaskets.
flange face_flat face(FF)


2. Raised Face (RF): The smooth surface and simple structure make it easy to process. Because of its easy installation, it is the most widely used type of flange employed in the oil and gas and chemical engineering industries. The contact surface of the gasket protrudes from the bolting circle face, concentrating the pressure on a smaller gasket area, thereby increasing the pressure containment capability. Applicable gasket materials include non-metallic flat-ring gaskets and metallic spiral wound gaskets and metal jacketed gaskets.
flange face_raised face(RF)

3. Ring Type Joint (RTJ): The metal ring is placed in the groove, and the gasket will not be pressed into the groove. The compression area is small, and the pressure of the gasket is uniform. When the bolt is tightened, the metal ring is compressed to form a tight seal. Because the gasket and the medium are not in direct contact, it can be used in applications with strict sealing requirements, such as high temperature and high pressure, flammable, explosive and toxic media. Ring type joint flanges use oval ring gaskets or octagonal ring gaskets.
flange face_ring type joint(RTJ)

4. Male and Female (MFM): It consists of a male face and a female face, which are used in pairs and are easy to align during installation. Placing the gasket on the female face can prevent the gasket from being extruded, so it can be used in applications with high pressure and strict sealing requirements, but it is not easy to replace the gasket. However, the gasket may still be squeezed out when the male and female flanges are used under high temperature operating conditions. Applicable gasket materials include non-metallic flat gaskets, metallic spiral wound gaskets and metal jacketed gaskets.
flange face_male and female(MFM)

Tongue and Groove (TG): It consists of a tongue flange and a groove flange, which are used in pairs. The tongue flange is manufactured with a raised ring that is machined into its face, and the groove flange is produced with a matching depression machined onto its face. Placing the gasket in the groove flange, so the compression area is small, the gasket is uniformly stressed, and it is not easy to be extruded. Because the gasket is not in direct contact with the medium, the sealing effect is good, and it can be used in high pressure, flammable, explosive and toxic media, etc. Tongue and Groove flanges use metal and non-metallic flat gaskets, metallic spiral wound gaskets and metal jacketed gaskets.
flange face_tongue and groove

The above is the basic description of the flange faces. When choosing the flange installed with the pump, it is recommended to consult with professionals before   select it.

PTCXPUMP sealless magnetic drive pump provides standard flange specifications(ANSI,JIS,DIN) for easy pipeline connection. It can adjust screw hole position to avoid leakage of inlet and outlet.

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 PTCXPUMP Sealless Magnetic Drive Pump

When the pump is connected to the pipeline, we generally use flanges, unions or hoses for connection. For the application of medium and large pumps, we often use flanges as the main connection method. Flange refers to the disc-shaped parts used to connect pipes, containers, or fix the shafts. Usually, there are screws and threaded structures to fix them. Flanges are generally used in pairs, the most common in pipeline engineering. The typical connection consist of flanges, gaskets and screws. Gaskets are added to the two flanges and tightly fixed with screws. Widely used in chemical industry, petrochemical industry, firefighting, drainage or water treatment application for liquid transfer solution.


There are countless types of flanges. The commonly used materials are carbon steel, stainless steel, alloy steel, etc. In addition, the thickness, the number of screw holes, and the diameter of the flange need to be selected according to the operation requirements.


The common types of flanges can be divided into Slip On Flange(SO), Weld Neck Flange(WN), Threaded Flange(THDF), Lap Joint Flange(LJ), Socket Weld flange(SW), Blind Flange(BL), and other special types(Specialty Flange), the following basically introduces several main flange types.


Slip On Flange(SO)

A fairly common type with lower installation costs and lower requirements for precise pipe cutting. The steel pipe, pipe fittings are inserted into the inner hole of flange and connected to the pipe through a fillet weld at the flange top and bottom. Since the flange hole is larger than the pipe diameter, it usually requires more welding action than other flanges, so it can effectively prevent leakage. Compared with weld neck flange, it is only suitable for low and medium pressure applications due to the lower neck height.


Weld Neck Flange(WN)

It is a flange that is butt welded to the pipe or fitting, and its installation cost is higher. In contrast to the slip on flange, the distance between the welding joint and the joint surface is large, and the joint surface will not be deformed by the welding temperature. Weld neck flanges are not easily deformed and have high sealing properties, making them suitable for high temperature and high pressure, even for pipelines that transport flammable and toxic fluids.


Threaded Flange(THDF)

The inner hole of the flange is processed into a screw thread and connected with a threaded pipe, which belongs to a non-welded flange. The main feature is easy installation, disassembly and maintenance. However, considering the characteristics of thread structure, it is strongly influenced by the environment, and the temperature in the threaded pipe fluctuates greatly, so it is not suitable for high temperature and high pressure applications.


Lap Joint Flange(LJ)

It consists of two parts, the Stub End and the Backing Flange. The flange is placed on the stub end, and the stub end is butt welded to the pipe joint. The flange can move on the pipe joint. It is mainly used for pipe systems that need to be disassembled frequently for inspection and maintenance. The flanging of the stub end is the sealing surface, and the flange is used to clamp the end of the pipe and the stub end. Because flanging stub end can isolate the flange from medium, it is suitable for conveying corrosive fluids.


Socket Weld flange(SW)

The inner hole of flanges has a socket and is connected by inserting the pipe into the socket and fillet welding around the top. Usually used in smaller, high-pressure pipelines, but not for highly corrosive fluids.


Blind Flange(BL)

It is a flange without a hole in the middle for closing the end of the pipe, with mounting holes around the perimeter and the gasket sealing rings are machined into the mating surface. The function is the same as the head and the cap, and the blind flange is fixed with screws for easy disassembly.


PTCXPUMP sealless magnetic drive pump provides standard flange specifications(ANSI,JIS,DIN) for easy pipeline connection. It can adjust screw hole position to avoid leakage of inlet and outlet.

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Why do you need to use explosion-proof motors? Explosion-proof motors are mainly used in harsh environments. In the process environment, the air will contain flammable substances, including gas or dust. When a specific concentration is reached, once there is an ignition source, it will cause fire or explosion. Explosion-proof motors can prevent explosions by isolating thermal energy from contact with combustibles and controlling the operating temperature of the motor. When the commonly used sealless magnetic drive pump or centrifugal pump is equipped with an explosion-proof motor, we can call it explosion-proof magnetic pump or explosion-proof centrifugal pump. The explosion-proof motor is selected according to the environment and process. The following will introduce the markings and classifications of explosion-proof equipments.


Explosion-proof marking refers to the mark used to describe the explosion-proof grade, temperature group, protection type and applicable environment of ​​explosion-proof electrical equipment.

The common explosion-proof classification standards mainly include IECEx and ATEX, as well as NEC and CEC.

IECEx: An international, worldwide explosion-proof standard defined by the International Electrotechnical Commission (IEC). An international certification system helps reduce testing and certification costs for manufacturers, allowing the unified standards to be applied in different countries. IECEx is also stricter than ATEX in the certification process.

ATEX: Basically similar to IECEx, but only used in European countries.

NEC: For use in the United States only.

CEC: For use in Canada only.

The following describes the meaning of each indication of the two major standards, IECEx and ATEX.


IECEx ex. 


ATEX ex.

Whether it is temperature, gas or dust, the environment where the equipment is located, etc., there are many factors that determine the specifications of the motor. After the above introduction, when selecting an explosion-proof motor, the meaning of these specifications can be more clearly understood.

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Motor is an indispensable part of the industrial automation and one of the most common electrical equipment in life. It is widely used in various electrical appliances, ranging from washing machines and fans in daily life; For industrial applications, pumping, machinery industry and fluid transfer, etc. Motors are also indispensable when pumps are used. Therefore, it is very important to understand and choose a suitable motor. The following describes the differences between normal motors, inverter duty motors and explosion-proof motors.


Normal Motors

There are many types of motors, according to the type of input power, they can be divided into DC motors, AC motors, etc. DC motors can be further subdivided into brushed DC motor, brushless DC motor(BLDC motor); AC motor includes induction motor and synchronous motor. In brief, DC motor controls the rotational speed through voltage, which is easy to control, but not suitable for high temperature and flammable operating environments. The AC motor controls the rotational speed through the frequency of the alternating current, so compared with the DC motor, it is not easy to control the speed, while it can be used in a high temperature and flammable operating environments.


Inverter Duty Motors

A variable frequency drive (VFD) (a.k.a Inverter) is used to change the frequency of the alternating current, by changing and controlling the speed and torque of the AC motor. Therefore, "variable frequency" refers to the way of driving the AC motor. It can be started and adjusted frequently without maintaining full-speed operation and maximum power. When the motor speed is reduced, the output horsepower will also decrease, thereby achieving high efficiency and energy saving. The system control is also more stable than the normal traditional motor.


Explosion-Proof Motors

Mainly used in operating environments where flammable substances exist, such as coal mining, natural gas industry, petrochemical and chemical industries, etc. With the hard explosion-proof shell, it can sustain the explosion pressure inside the motor, and also can isolate the heat from the inflammable materials, so as to avoid the danger of fire or explosion.

According to the explosion-proof form, it can be roughly divided into flameproof motor (symbol d), intrinsic safety motor (symbol i), increased safety motor (symbol e), positive pressure explosion-proof motor (symbol p), non-sparking motor (symbol n), and dust ignition proof motor, etc., depending on the protection level, each has its features and functions.


With a brief understanding of the differences between these motors, I believe it becomes easier to choose the right motor for your needs.

Best Solution For Chemical Transfer  PTCXPUMP Sealless Magnetic Drive Pump

The pump is a general rotating machine, and its operating power comes from the motor. The types of pumps include sealless magnetic drive pumps, mechanical seal pumps or other forms of centrifugal pumps, all of which must be connected to a motor to deliver the fluid.


Motors can be divided into general motors, inverter duty motors and explosion-proof motors. The specifications of the motors are also different according to the application and environment. The following describes about how to select a suitable motor according to the requirements when using a pump.


For different purposes, it can be based on motor specifications, such as the number of poles (Pole), RPM, the frequency (Hz), voltage (V), the install location, IP Rating, and the energy efficiency index to decide which model to choose.


Pole, RPM, Frequency(Hz)

Pole represents the number of magnet poles in the stator magnetic field of the motor. According to the different connection forms of the stator coil windings, different numbers of poles in the stator magnetic field can be generated. The number of poles affects the rotational speed of the motor.


RPM stands for revolutions per minute. For example, the rotational speed of the motor is 3,600RPM, which means that the motor can rotate 3,600 revolutions per minute.


Frequency (Hz) refers to the frequency of the alternating current (AC) is the number of cycles per second in an AC sine wave. Frequency is the rate at which current changes direction per second, in the international measure Hz as the unit, we use 50Hz or 60Hz in the general worldwide.


RPM formula: RPM= Hz x 60(sec/min) x 2 ÷ number of poles

Therefore, under normal circumstances, when the frequency is 60Hz, 2P runs 3600 rpm, 4P runs 1800 rpm, 6P runs 1200 rpm, and so on. It can be seen from the formula that the number of poles, frequency and rotational speed are closely related to each other.


Voltage (V)

The voltage is proportional to RPM, that is, the higher the input voltage, the faster the motor rotates; the lower the input voltage, the slower the motor rotates.


IP Rating& Install Location

IP rating is usually marked with IPXX, such as IP54, IP55, IP56, etc. The first number after it represents the protection against contact and intrusion of solid foreign objects, and the second number represents the protection against ingress of liquid.

The motor can be installed indoors or outdoors according to the IP rating, depending on whether it can resist damage caused by wind, sun, rain, as well as customer operation requirements, noise problems and other conditions.


Energy Efficiency Index

International Efficiency is defined by the International Electrotechnical Commission (IEC), and the energy efficiency levels are divided into IE1, IE2, IE3, and IE4. The larger the number, the better the efficiency and the more power saving.


The above are the relevant specifications that must be referred to when selecting a motor. Next, the differences and applications of general motors, inverter duty motors  and explosion-proof motors will be introduced.

Best Solution For Chemical Transfer  PTCXPUMP Sealless Magnetic Drive Pump