Sanitary Diaphragm Valve is a special valve that uses compressed gas as a driving force to isolate the fluid from the valve body and actuator through an elastic diaphragm. Its main features are simple structure, safe operation, easy maintenance, and effective prevention of fluid contamination and leakage. It is particularly suitable for use in pipeline systems containing particles, viscous, corrosive or high-purity media. The diaphragm, as a moving part, can not only cut off the fluid, but also prevent the fluid from contacting the metal parts of the valve, thereby protecting the fluid from contamination and the valve itself from erosion.

Structural features of pneumatic diaphragm valves:
Diverse diaphragm materials: Commonly used diaphragm materials include rubber, polytetrafluoroethylene (PTFE), chloroprene rubber (CR), etc., and each material has its scope of application.
No dead zone design: The diaphragm has a wide coverage area and can almost completely close the flow channel to avoid the accumulation of substances in dead corners.
Fast opening and closing: Rapid response, suitable for high-frequency opening and closing operations.
Self-cleaning: In some designs, the movement of the diaphragm can help remove impurities adhering to the valve body.
The core of the pneumatic diaphragm valve is the elastic diaphragm, which is located in the valve body and controls the opening and closing of the valve by moving up and down. When compressed air is sent into the actuator, the air pressure causes the diaphragm to deform and open the flow channel; conversely, it closes the flow channel. This process completely relies on the operation of the pneumatic actuator to achieve fluid control.