Ball sealing support 球体密封支架
gate valve for ball sealing 球面闸阀
ball face sealing 球面密封
ball head sealing 球头密封
metal hard sealing ball valve 金属硬密封球阀
ball face sealing structure 球面密封结构
ball valve sealing structures 球阀密封结构
vacuum line sealing ball 真空管密封球
In general, WILLIAMSONs trunnion ball valve features the front ball sealing design structure.
威廉姆森固定球阀一般采用球前阀座密封结构。
Ball and valve seat rings are metal materials, sealing pressure than the large, rely on the media itself can not seal the pressure has reached the requirements to be imposed by external forces.
球体和阀座密封圈都采用金属材料制造，密封比压很大，依靠介质本身的压力已达不到密封的要求，必须施加外力。
And the ball must contain an adequate vent to the pressure port opposite of the downstream sealing port.
球体必须包含一个能够排出到下游密封端口的反面的压力端口处。
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