elliptical face thru-conduit 在句中的含义？ from “handbook of oil industry terms and phrases”, 网上有。 valve, through-conduit a class of gate valve whose valve body is made so that the gate or tongue of the valve and its seating element extend down through the fluid passageway or conduit of the valve. in an ordinary gate valve, the gate seats at the bottom of the conduit and does not extend through . through-conduit valves , when in an open and closed position, seal off the body of the valve from the fluid pumped through the pipeline. this is an important feature when the fluid being handled is corrosive.查看更多
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