... 顺序阀、抗衡阀、卸载阀 SEQUENCE、COUNTER BALANCE、UNLOADING VALVES 减压阀 REDUCING VALVES 背压阀 BACK PRESSURE CONTROLLED VALVES ...
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No relief valve is required where two pressure reducing valves are installed.
如果装上两个减压阀，就不需要安全阀。
All of these are normally closed valves, except for reducing valves, which are normally open.
所有这些都是正常关闭阀，除减少阀门，一般开。
Analyze the relationship between flow, pressure, pressure differential and valve opening of pressure reducing valves.
分析了减压阀的流量、压力、压力差和阀门开度的关系。
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