quick return valve
... 速断开关 quick break switch 速回阀 quick return valve 速动三通阀 quick triple valve ...
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低速回程单向阀 slow return check valve
慢速回转阀门 Slow Turn Valve
导流式速闭止回阀 Non-slam nozzle check valve
低速回程阀 slow return valve
高速回转液压缸内集成了由两个液控单向阀组成的液压锁，对液压缸保压。
There is a hydraulic lock which is composed of two pilot controlled check valves in the rotary cylinder to retain pressure.
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