The composition and working principle of pneumatic diaphragm valve is introduced

with corrosion resistant lining pneumatic diaphragm valve pneumatic valve body and corrosion resistance of the diaphragm instead of pneumatic valve core component, using the movement of the diaphragm regulating role. Pneumatic diaphragm valve pneumatic valve body material is cast iron, cast steel, or cast stainless steel, and in a variety of corrosion or wear resistant lining material, rubber and ptfe diaphragm material. The lining of the diaphragm corrosion resistance is strong, applicable to strong corrosive medium such as strong acid, strong alkali.
pneumatic diaphragm valve has simple structure, small fluid resistance, flow capacity than other types of pneumatic valve of the same specification; No leakage, can be used for high viscosity and the adjustment of the suspended particles medium. Diaphragm isolating medium and pneumatic valve stem cavity, so there is no packing medium will not leak. However, as a result of the limitation of the diaphragm and lining material, pressure resistance, low temperature resistance, generally only applies to. MPa nominal pressure and ℃ below.
flow rate characteristics of pneumatic diaphragm valve close to quick opening feature, approximate to linear, in front of the % travel flow rate changed little after %. Pneumatic pneumatic diaphragm valve can be attached in the form of feedback signal, stop and locator device, to meet the needs of the automatic control, program-controlled or adjust the flow. Pneumatic diaphragm valve feedback signal using non-contact sensor technology. The product adopts the diaphragm to promote cylinder, replace the piston cylinder, ruled out the piston ring is easy to damage, caused by leakage and cause can't promote the disadvantages of pneumatic valve opening and closing. When air failure occurs, well the handwheel pneumatic valve opening and closing operation.