In the selection of imported valves, if the medium containing fibers, containing impurities, containing particles should be used in the V-belt cutoffvalve.
在选用进口调节阀时，如果介质为含纤维、含杂质、含颗粒时，应选用V型带切断的调节阀。
2
Close the door distribution discharge valve and, if cut-offvalve is opened, pumping water to the piston from the pipeline until the pump output.
关闭分配阀卸料门，如有截止阀则打开，泵送清水至活塞从输送管输出端泵出为止。
3
The cut-offvalve type, the internal leakage is not allowed.