Diaphragm valve is a kind of diaphragm productwith wide application in fluid control system offluid-related industries like pharmacy, biology, dairyproducts, drink, chemical engineering, cosmetics, foodand electronics etc. Its advantages include no deadangle, no leakage, easy cleaning,low maintenance costand convenient operation etc. Automatic control andmanual control can be realized, which can reduceoperating costs for enterprises. Discharge is clean intime of 35 degrees installation. There is no risk ofleakage inside the valve. It has high resistance tocorrosion. Highly viscous materials can easily passthrough diaphragm valve, which can be a substitutefor ball valve and butterfly valve with high require-ment for cleanness.