G41W G41J G41FS diaphragm valve is a special form of cut-off valve, appeared in the 1920s. Its opening and closing parts is a piece of soft material made of diaphragm, the valve body cavity and the valve cover cavity and drive parts separated, so it is called diaphragm valve. This product adopts a special process in the valve body lined with polytetrafluoroethylene, diaphragm parts using polytetrafluoroethylene diaphragm lined with butadiene rubber liner, so that the valve cavity of each part to achieve the same corrosion resistance. The product has good throttling characteristics, corrosion resistance and resistance to particulate media, reliable sealing performance, can be widely used in a variety of corrosive. Sexual fluids and fibrous, powdery media.

Valve diaphragm to the lower body cavity and the upper bonnet cavity separated, so that the valve stem, valve and other parts located above the diaphragm is not subject to media corrosion, eliminating the packing seal structure, and will not produce media leakage.