DY30AX Slow opening and slow closing check valveDetailed product description：

The DY30AX slow opening and slow closing check valve consists of components such as valve body, valve cover, valve disc, valve stem, spring, and pilot valve. The space between the upper and lower valve covers is a diaphragm chamber, which is equipped with a diaphragm. The diaphragm is connected to the central axis, and the other end of the central axis is connected to the valve. The valve is in contact with the valve seat.

The main component materials of DY30AX slow opening and slow closing check valve are as follows:

Part Name	material
Valve body and valve cover	Cast iron, cast steel, stainless steel
valve stem	Chromium stainless steel
valve disc	Carbon steel, stainless steel+nitrile rubber
O-ring	Nitrile rubber
spring	stainless steel