Pneumatic Normally Closed Diaphragm Valve
Introduction:
The normally closed pneumatic lined rubber diaphragm valve is specially used for controlling non-corrosive or generally corrosive media. The surface of the valve body cavity is not lined or covered with a variety of rubber for choice. It is suitable for different working temperatures and fluid pipelines.
Working Principle:
Normally closed pneumatic diaphragm valve ventilation open, air is closed. Opening and closing are realized by the up and down movement of the valve stem driven by the pneumatic actuator. With the stem in the upper position, the spherical diaphragm bends the valve upward to form an open position. When the stem moves from up to down, it drives the spool to bend the diaphragm, forcing the diaphragm against the seat area and closing the path of pipeline fluid
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