威廉姆森固定球阀一般采用球前阀座密封结构。
In general, WILLIAMSONs trunnion ball valve features the front ball sealing design structure.
介绍了固定球球阀的密封原理和阀座密封力的计算，分析了加工误差对密封性能的影响，提出了改进意见。
Introducing the sealing principle of fixed ball valve and the calculation of seat sealing force, analyzing the effect of machining error upon sealing property and putting forward improving opinions.
本实用新型公开了一种三位球阀，由上壳体2与下壳体3通过螺栓结构相固定。
The utility model discloses a three-way ball valve, comprising a case body 2 and a lower case body 3, which are fastened through a bolt structure.
一般球阀的结构分为浮动球球阀和固定球球阀两类。
Generally ball valve's structure divides into the fluctuation ball ball valve and the fixed ball ball valve two kinds.
一般球阀的结构分为浮动球球阀和固定球球阀两类。
Generally ball valve's structure divides into the fluctuation ball ball valve and the fixed ball ball valve two kinds.
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