Pneumatic valve diaphragm
Pneumatic valve diaphragm is the core sealing component in pneumatic valves, mainly used to control the flow and shut-off of fluid media. Its material, structure, and performance directly affect the working efficiency and service life of the valve.
The following is comprehensive information about pneumatic valve diaphragms:
1、 Material classification
Rubber type
Nitrile rubber (NBR): Strong oil resistance, suitable for industrial hydraulic and pneumatic control valves.
Ethylene propylene diene monomer (EPDM): resistant to high temperatures and corrosion, commonly used in the chemical and power industries.
Natural rubber (NR): With excellent elasticity, it is commonly used in low-pressure environments.
Sandwich composite class
Adopting rubber and fiber cloth lamination process to enhance wear resistance and tear resistance, suitable for high-pressure valves (such as pressure reducing valves and diaphragm pumps).
Fluororubber (FKM) and polytetrafluoroethylene (PTFE)
Resistant to strong acids and alkalis, suitable for special working conditions such as electromagnetic pulse valves and chemical pipelines.
2、 Application scenarios
Pneumatic control valve: The valve core is driven by a thin film actuator to achieve precise control of flow and pressure.
Electromagnetic valve: Direct acting diaphragm is used for quick opening and closing, often made of EPDM or nitrile material.
Diaphragm valve: Double layer separated diaphragm (such as DN50 specification) is suitable for sanitary or corrosive media.
Pneumatic Valve Diaphragm - Tianjin Yibiao Valve Manufacturing Co., Ltd
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