DY30BX Slow opening and fast closing check valveDetailed product description：

The DY30BX slow opening and quick closing check valve consists of a valve seat, a valve stem, and upper and lower valve covers connected to the valve body. 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 DY30BX slow opening and fast closing check valve are shown in the table below:

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 0	stainless steel