Top-mounting fixation ball valve
A technology of fixing ball valves and tops, applied in valve details, valve device, valve shell structure, etc., can solve the problems of low pipeline production efficiency, inability to achieve online maintenance, poor sealing effect of ball valves, etc., to reduce users' economic losses and reduce media Leakage probability and effect of improving sealing performance
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[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0018] Such as Figure 1 to Figure 3 As shown, the top-entry trunnion ball valve includes a valve seat 2, a valve body 1, a valve ball 3, a valve stem 4 and a handle 5. The valve body 1 is provided with an inflow channel, an outflow channel, and a valve cavity 18 connecting the inflow channel and the outflow channel. , the valve chamber 18 is provided with a valve ball 3, the valve ball 3 is supported on the valve body 1 by the left and right valve seats 2; The valve stem hole is covered with a bonnet 7 that is sealingly connected with the valve body 1. The bonnet 7 bulges into the valve cavity 18. The periphery of the bonnet 7 is fixedly connected with the valve body 1 by bolts. The bonnet 7 a...
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