Stainless steel swing check valve with swing disc, bolted cover, internal hinge pin, renewable seat and one-way flow control design in DIN3356 standard. Swing check valve has lowest pressure drop compare with other type of check valve. Bolt bonnet check valve allows flow forces to move the disc from the closed position to the fully open position in a sweeping arc motion against the hinge-stop inside of the valve body. Due to the weight and center-of-gravity location of the disc and swing-arm assembly, the valve will return to the closed position should flow become interrupted or reversed. Valve pressure from PN16 to PN100 matching valve size from DN50 to DN1000. Bolt bonnet swing check valve normally with flange ends connection in industrial pipeline as well as welding ends. Valve material covers CF8, CF8M, CF3M ect and they are commonly used in all type low pressure system of thermal power plant, chemical industry and metallurgy etc.
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