There are two types of lumbar and two-way check valve body connection design: the first is the body cap bolts connected forged steel check valve, designed according to this form of connection of the valve, the valve body and the valve cover bolted, winding Gasket seal, the advantage is easy to repair; The second kind of body cover all-welded forged steel check valve, according to the design of the connection form of the valve, the valve body and the valve cover with mosquito connection, all-welded seal, the advantage is No leaks.
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