... , ozone, weather, aging, refrigeration and chemical resistance, according to customer's requirements (eg. Tensile strength, elongation, compression set ... Our rubber diaphragm valve are custom designed and engineered to operate for specific pressure and pressure changes, mechanical ... diaphragm valve 2.Applicationof rubber diaphragm valve:water pump etc pumpItem:Rubber Diaphragm Valve Material:NBR,HNBR, ...