广东快乐十分

Butterfly valve
Triple-eccentricity Bufferfly Valve
For the structure of the triple-eccentricity seal bufferfly valve, when the valve is under the complete open state, its ...
Double-eccentricity Bufferfly Valve
During valve opening/closing, the bufferfly plate sealing face will be deviated gradually from and pressed into graduall...
Centric Constuction Bufferfly Valve
The turning center of the bufferfly plate is on the centerline of the valve body and the sealing face section of the buf...
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