The diaphragm and the valve body with corrosion resistant lining nd orrosion stuffing structure,

thr otling element for the elastic diaphr gm and the valve body flow smoothly, 50 the pneumatio diaphragm

valve has a negatve film foroe is small, large flow, no leakage. fire and explosion prevention and canvenient

and reliable advantages. widely used in industrial sutomation system in srong acid, alkali, strong

corrosion. high viscosity. containing grains, fiber and toxic and not allow pollution of medium flow

regulation.