Gas Filters

Gas Filters

Gas filters and purifiers for a range of gases including hydrogen (H2), oxygen (O2), nitrogen (N2), helium (He), carbon dioxide (CO2), argon (Ar), methane (CH4), and ethylene (C2H4).

Gas filters and Purifiers OEM Manufacturer

    HENGKO, an acclaimed OEM manufacturer, specializes in high-pressure gas filters and purifiers

for a range of gases including hydrogen (H2), oxygen (O2), nitrogen (N2), helium (He), carbon dioxide (CO2),

argon (Ar), methane (CH4), and ethylene (C2H4). Designed for diverse industries such as medical, aerospace,

food packaging, and petrochemicals, HENGKO's products excel in removing contaminants under high-pressure

conditions. Their portfolio features robust sintered metal and stainless steel filters, ensuring optimal purity and


     With a focus on quality and innovation, HENGKO stands as a trusted provider of efficient gas filtration solutions.

Gas filters and Purifiers OEM Manufacturer

Then As a Gas Filters and Purifiers OEM Manufacturer, HENGKO can supply OEM services for various components

and systems within the gas filtration and purification domain.

Here are the key areas where HENGKO's OEM services stand out, please check as following: 

1. Custom Filter Designs:

   Tailoring filter geometries and materials to meet specific application requirements, ensuring optimal filtration efficiency
   and compatibility with different gases and pressures.

2. Sintered Metal Filters:

    Specializing in the manufacture of sintered metal filters that offer high durability and excellent filtration capabilities
    for a wide range of gases under high-pressure conditions.

3. Purification Systems:

    Developing complete purification systems that can be integrated into clients' existing setups, designed to remove
    specific contaminants and achieve desired purity levels.

4. Filter Media Selection:

    Assisting in the selection of appropriate filter media, including stainless steel, to match the chemical and physical
   demands of the application, enhancing the performance and lifespan of the filter.

5. Custom Housing and Components:

    Providing custom-designed housing and components that fit seamlessly into clients' equipment, ensuring
    easy installation and maintenance.

6. High-Pressure Support:

    Engineering solutions that are capable of operating efficiently under high-pressure conditions, suitable
    for industrial, medical, and laboratory applications.

7. Prototyping and Testing Services:

    Offering prototyping and rigorous testing services to ensure that the final product meets the required
    standards and specifications before full-scale production.

8. Regulatory Compliance Assistance:

    Ensuring that products comply with relevant industry standards and regulations, offering peace of
    mind and facilitating market entry.

Each of these services highlights HENGKO's ability to provide comprehensive and customized OEM solutions for gas filtration and purification, ensuring that clients receive products that are not only high in quality but also perfectly suited to their specific needs.


If you have any requirements and are interested in more details for the OME gas filters,

please send an inquiry by email to contact us now. 

we will send back asap within 48-Hours with products and gas filter solution.


contact us icone hengko



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Full Guide to High Purity Gas Filtration


Why some gas need to filter and Purity ?  

Several reasons exist for why some gases need filtration and high purity:

* Maintaining process integrity: 

  In applications like semiconductor manufacturing or medical procedures,

   even microscopic particles or impurities can disrupt or contaminate the process,

   leading to product defects or safety hazards.

* Protecting equipment: 

   Sensitive equipment can be damaged by even trace amounts of contaminants,

   leading to costly repairs and downtime.

* Ensuring consistent results: 

  Precise control over gas composition is crucial for many scientific and industrial processes.

  Filtration helps maintain consistent gas quality and achieve repeatable results.

* Meeting regulatory requirements: 

  Certain industries, like food and beverage or pharmaceuticals, have strict regulations regarding

  the purity of gases used in their processes. 


Here are some specific examples:

* Inert gases like nitrogen and argon used in welding or food preservation require filtration to remove

  moisture and oxygen, which can compromise the weld quality or promote spoilage.

* Process gases used in semiconductor manufacturing, such as ammonia or hydrogen chloride, need

   extremely high purity levels to prevent defects in the microscopic circuits being created.

* Medical gases like oxygen or nitrous oxide used in hospitals must be free of contaminants to

   ensure patient safety. 


While some commercially available gases may be labeled as "high purity," they might still contain trace

impurities or pick up contaminants during storage and transportation. Filtration provides an extra layer of

protection to ensure the gas meets the specific requirements of the intended application.



Main Features of Gas Filters

Filtration Performance:

* High filtration efficiency: Sintered stainless steel filters offer excellent removal of particles down to

   submicron levels, depending on the filter's pore size. This ensures high gas purity and protects

   sensitive equipment and processes.

* Wide range of pore sizes: 

   Filters can be manufactured with various pore sizes, allowing them to be customized for specific

   filtration needs, from removing large dust particles to capturing microscopic contaminants.

* Depth filtration: 

   The porous structure of the sintered metal allows for depth filtration, where particles are trapped

    throughout the filter media, not just on the surface. This extends the filter's lifespan and ensures

    consistent performance.


Material Properties:

* Corrosion resistance: 

   Stainless steel is highly resistant to corrosion from various gasses and fluids, making it suitable

   for use in harsh environments.

* High temperature resistance: 

   Sintered stainless steel can withstand high temperatures, allowing them to be used in applications

   involving hot gases.

* Cleanability: 

  The filters can be easily cleaned and reused, reducing replacement costs and downtime.

* Long lifespan: 

   Due to their robust construction and resistance to harsh conditions, sintered stainless steel filters 

   offer a long service life.


Additional Features:

* High mechanical strength: 

   The sintered metal structure provides excellent mechanical strength, allowing the filter to withstand

   high pressure differentials.

* Biocompatibility: 

   Certain grades of stainless steel are biocompatible, making them suitable for applications involving

   medical gases or food and beverage processing.

* Versatility: 

   Sintered stainless steel filters can be manufactured in various shapes and sizes to fit diverse application needs.


Overall, sintered stainless steel gas filters offer a unique combination of high filtration efficiency, robust material

properties, and long lifespan, making them a popular choice for various industrial and medical applications

requiring high gas purity.


How to choose right gas filter for your gas and purity project ? 

Choosing the right gas filter for your project depends on a number of critical factors. Here's a step-by-step approach:

1. Define Your Needs:

* Gas type: Identify the specific gas you will be filtering. Different gases have different chemical properties that might require specific filter materials.
* Contaminants: Understand the types of contaminants in your gas stream (particles, moisture, oils, etc.). This determines the filter's micron rating.
* Purity level: How pure does the gas need to be? The required purity level influences the filter's efficiency and design.
* Flow rate: The volume of gas passing through the filter per unit of time impacts the filter size.
* Operating conditions: Consider factors like temperature, pressure, and chemical compatibility.

2. Filter Specifications:

* Micron rating: This value indicates the filter's ability to remove particles of a specific size. Choose a micron rating that aligns with your purity requirements.
* Material: Stainless steel is the most common material for durability and corrosion resistance. Consider specific grades for special applications or biocompatibility requirements.
* Connection type and size: Ensure the filter fits properly within your system's piping.
* Housing: Select a housing material and design suitable for your operating conditions (pressure, temperature).

3. Additional Considerations:

* Pressure drop: Determine the acceptable pressure drop across the filter. Filters with finer filtration capabilities will often have a higher pressure drop.

* Replaceability: Will you be using replaceable filter elements or a complete filter assembly?

* Cost: Balance initial investment with ongoing maintenance and replacement costs.

4. Consult with Experts

* Filter manufacturers: Reputable manufacturers like HENGKO (

specialize in gas filtration solutions and can advise on best practices for your specific application.

* Industry resources: Look for sector-specific guidelines or regulations surrounding gas purity and filtration.


* Oversizing: Slightly oversizing your filter can provide better protection against unexpected surges or contamination.

* Monitoring: Install pressure gauges before and after the filter to monitor pressure drop and determine when the filter needs cleaning or replacement.

* Regular maintenance: Follow the manufacturer's recommended maintenance schedule to extend the life of your filter.

 Selecting the right gas filter ensures the protection of critical equipment, compliance with regulations,

and achievement of the highest levels of purity in your project.





1. Why are gas filters and purity systems necessary?

Gas filters and purity systems play a crucial role in various applications by removing contaminants and ensuring the desired level of gas purity. This is crucial for several reasons:

* Maintaining process integrity: Impurities can disrupt or contaminate sensitive processes like semiconductor manufacturing or medical procedures, leading to product defects or safety hazards.
* Protecting equipment: Even trace amounts of contaminants can damage sensitive equipment, causing costly repairs and downtime.
* Ensuring consistent results: Precise control over gas composition is essential for many scientific and industrial processes. Gas filters help maintain consistent gas quality and achieve repeatable results.
* Meeting regulatory requirements: Certain industries, like food and beverage or pharmaceuticals, have strict regulations regarding the purity of gases used in their processes.


2. What types of contaminants can gas filters remove?

Gas filters can remove various types of contaminants, depending on the specific filter design and application. Here are some common examples:

* Particulates: These include dust, rust, and other airborne particles that can clog equipment and interfere with processes.
* Moisture: Excess moisture can affect gas reactivity and cause corrosion in equipment.
* Hydrocarbons: These organic compounds can contaminate processes and affect product quality.
* Acidic gases: These can corrode equipment and pose safety hazards.


3. How are gas filters rated?

Gas filters are typically rated by their micron rating. This number indicates the smallest size of particles that

the filter can capture effectively. For example, a 1-micron filter can remove particles as small as 1 micrometer (µm) in diameter.


4. What are the different types of gas filter materials?

The most common material for gas filters is sintered stainless steel. This material offers a combination of high filtration efficiency, corrosion resistance, high temperature tolerance, and cleanability. Other materials can be used for specific applications, such as:

* Ceramic: Suitable for high-temperature and high-purity applications.
* Polymer: Used for filtering specific gases or when lower cost is desired.
* Fiber media: Used for pre-filtration applications to capture larger particles.


5. How do I choose the right gas filter for my application?

Choosing the right gas filter requires considering several factors, including:

* The type of gas being filtered: Different gases have different chemical properties and require compatible filter materials.
* The desired level of gas purity: Determine the level of filtration needed to meet your specific application requirements.
* The flow rate of the gas: The filter size needs to be appropriate for the volume of gas being processed.
* Operating conditions: Factors like temperature, pressure, and chemical compatibility with the filter material are crucial.

Consulting with a reputable gas filter manufacturer is recommended to ensure you select the most suitable filter for your specific needs.


6. How often do I need to replace my gas filter?

The lifespan of a gas filter depends on several factors, including:

* The type and amount of contaminants being removed: Filters handling heavy contamination loads will need more frequent replacement.
* The operating conditions: High pressures, temperatures, or chemical exposure can shorten the filter life.
* The specific filter design: Some filters offer longer lifespans due to their design and materials.

It's crucial to monitor the pressure drop across the filter regularly. An increased pressure drop indicates a clogged filter and the need for replacement or cleaning (if applicable).


7. Can gas filters be cleaned and reused?

Some gas filters, particularly those made of sintered metal, can be cleaned and reused. The cleaning method depends on the specific filter design and the type of contaminants being removed. Always follow the manufacturer's instructions for cleaning and maintenance to ensure optimal performance and lifespan.


8. What are the safety considerations when using gas filters and purity systems?

Working with compressed gases and filters requires adhering to safety protocols. This includes:

* Using personal protective equipment (PPE): Always wear appropriate eye protection, gloves, and respirators when handling gases and filters.
* Following proper handling procedures: Familiarize yourself with safe handling practices for compressed gases and the specific filter system you are using.
* Maintaining the system regularly: Regularly inspect your gas filters and purity system for leaks, damage, or malfunctioning components.


9. What are the environmental considerations of using gas filters?

While gas filters are essential for ensuring gas purity, it's important to consider their environmental impact. This includes:

* Proper disposal of spent filters: Certain filter materials may require specific disposal methods to avoid environmental contamination.
* Minimizing energy consumption: Choosing energy-efficient filter systems and optimizing operating conditions can reduce energy consumption.


Mini 0.003μm High-purity Gas Filter Solution


Looking for premium gas filtration and purification solutions?

Contact HENGKO today for expert OEM services tailored to your specific needs.

Whether it's high-pressure gas filtration, custom purification systems, or specialized component manufacturing,

HENGKO offers a one-stop solution. Don't hesitate, reach out to the HENGKO team now by email




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