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  PressureControlValve

Sigma KEE - PressureControlValve
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压力控制阀
valve that controls the pressure in a fluid
Relationships      
Parents A Device that regulates, directs or controls the FlowFn of a Fluid (Gas, Liquid, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. (Wikipedia)
Children 安全阀Most common type of a presure control valve; it consists of a piston that is retained on its seat by a spring


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