Self-sealing gate  valve has three kinds of valve cover design form. The first is a bolt-type bonnet, designed in this form of the valve, the valve body and the valve cover with bolts and nuts, wound gasket (316 clamp flexible graphite) sealed. Customers have special requirements can also be used when the metal ring connection. The second design form is a welded bonnet, according to this design form of the valve, the valve body and the valve cover with a threaded connection, full welding seal. Customers have special requirements can also be used when the whole welding connection. The third is the pressure from the tight-type valve cover, according to the design of the design of the valve, the valve body and the valve cover with the thread, the pressure from the seal ring seal.
 

Design structure and description characteristics

Gate valve design with APl602, BS5352 and ASME B16.34. Inspection and testing according to APl598, marked by MSS-SP-25.
 

Standard Material List

Note: Other materials available to customer needs are also available. The sealing surface material pairing is determined by the customer's designation. cs = carbon steel; As = alloy steel; Ss = stainless steel.

Size (mm) and weight (kg)