The union gas filter valve is a gas pipeline control device that integrates filtering and regulating functions. It is used to remove impurities from gas and control gas flow.

Technical Specification

Nominal Pressure: 1.6 MPa

Working Medium: Civil gas, natural gas, LPG

Working Temperature: -20°C ≤ t ≤ 100°C

Thread Standard: Conforms to ISO 228

Product Advantages

High-Precision Filtration: Utilizes a multi-layer stainless steel mesh structure with a filtration accuracy of 10-50 microns.

Quick Maintenance: The quick-disconnect filter element allows for cleaning or replacement within 5 minutes.

Superior Sealing: Employs a double-sealing structure combined with elastic material sealing rings, with a leakage rate < 0.01%.

Pressure Display Function: Equipped with a dual-gauge design to display inlet and outlet pressure in real-time, ensuring timely detection of abnormalities.

Product Customization

Nominal Diameter: DN15/DN20/DN25/DN32/DN40/DN50/DN65/DN80/Customizable

Body Material: Brass/Cast Iron/Ductile Iron/304 Stainless Steel/316 Stainless Steel

Connection Type: Internal Thread/External Thread/Flange/Welding/Clamp

Flange Standard: GB/HG/DIN/ANSI/JIS

Inlet Pressure Range: 0.5-3kPa/3-10kPa/10-25kPa/25-50kPa/50-100kPa

Outlet Pressure Range: 1-3kPa/2-5kPa/5-10kPa/10-20kPa/Customizable

Filter Mesh Material: 304 Stainless Steel/316 Stainless Steel/Copper Mesh

Sealing Ring Material: Nitrile Rubber (NBR)/Fluororubber (FKM)/Ethylene Propylene Diene Monomer (EPDM)

Dial Size: 40mm/50mm/63mm/80mm/100mm

Surface Treatment: Polished/Nickel-plated/Chrome-plated

What Are The Application Scenarios For Gas Filters?

Household gas filters

Installation location: Typically installed after the gas meter and before gas appliances (e.g., at the interface of gas stoves and water heaters).
Characteristics: Small size, moderate filtration precision (e.g., filtering particles above 50μm), mostly with threaded connections for easy home installation and maintenance.

Industrial/commercial gas filters

Installation location: Used at the gas inlets of large gas boilers, gas turbines, industrial furnaces, and other equipment.
Characteristics: Higher filtration precision (e.g., below 10μm), strong pressure resistance, and may be equipped with differential pressure alarm devices or automatic drain functions to ensure stable operation of industrial equipment.

How To Maintain A Gas Filter?

1. Regular cleaning

Household filters are recommended to be inspected every 1-2 years, with the filter element cleaned or replaced according to usage frequency and impurity conditions.

Industrial filters require timely draining or filter element replacement based on differential pressure gauge readings (e.g., when the differential pressure exceeds the set value).

2. Correct installation direction

Pay attention to the arrow markings on the filter shell to ensure the gas flow direction is consistent with the arrow, avoiding reverse installation that could damage the filter element or cause filtration failure.

3. Select appropriate specifications

Choose a filter with suitable specifications based on gas type (natural gas, liquefied gas, artificial gas, etc.), pipeline pressure (low pressure, medium pressure, etc.), and flow rate to avoid affecting gas supply due to incompatible specifications.

4. Professional operation

Installation and maintenance involving gas pipelines must be performed by professional personnel to ensure tightness and prevent gas leaks.