| 摘要 |
The valve comprises a central body to which is bolted a bonnet housing, a handwheel and a spindle. The spindle is of the non-rising screw type and actuates the gate. - The inlet and outlet nozzles are bolted to the body and are counterbored at their inner ends. A valve seat fits inside each counterbore and is sealed with an 'O'-ring on the inner face. The valve seal is housed in a face groove in each of the seats.(0/5)
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