Used in petroleum chemical industry, flammable and explosive (hydrogen or hydrocarbon +H2+H2S)and strong corrosive.

Product characteristic:

A. The entire valve body are forged,and casting is also available;

B. The valve cavity was full metal pressure sealing structure;

C. Three effective positioning function could reset the internal parts accurately;

D. The sealing surface of valve disc and seat was surfacing anti cavitation stellite alloy;

E. Valve NPS>6*with self centering structure;

F. By patent technology,it could satisty spring protection,then prevent valve abnormal wear and tear,and also reduce noise.Make the axial flow type check valve with safety and reliability.

Technical parameters:

NPS 1/2”~98" Class 150-4500

Medium: hydrogen(H2S), hydrogen filling gas, hydrogen gas products(H2S)

Medium temperature:≤550℃