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- hydraulic operated check valve 液控单向阀
- Series 774X consists of two independently operating check valves located between two resilient seated shutoffs with four ball valve type test cocks. 系列774X有两个独立运行的止回阀，位于两个弹性阀座关闭阀之间，并配置四个球阀类型的测试旋塞。
- Improvement of pilot operated check valve of lift cylinder in shearer 采煤机调高油缸液压锁的改进
- Series 757, 757N consists of two independently operating check valves, two shutoff valves, and four test cocks. 系列757，757N由两个独立运行的止回阀、两个关闭阀和四个测试旋塞构成。
- Series 774XDCDA contains two independently operating check valves located between two resilient seated shutoffs with four ball valve type test cocks and a hydraulically balanced metered bypass line to detect low flows. 系列774XDCDA包含两个独立运行的止回阀，位于两个弹性阀座关闭阀之间，并配置四个球阀型测试旋塞，以及一个液压平衡仪表旁路管线用于检测低流量。
- The hose connection backflow preventer shall consist of two independently operating check valves with an intermediate atmospheric vent. 这种软管连接防回流阀应该包括两个独立运行的止回阀，这些止回阀带中间大气排气口。
- Analysis about configuration and capability of pilot operated check valve on shearer 采煤机液压锁的结构性能分析
- Keywords automatic pipe cutting machine;pilot operated check valve;hold down bracket carboy; 自动切管机;液控单向阀;托架缸;
- YG-30 drilling rig is a full hydraulic operated top drive power head drill. 型工程钻机为全液压驱动动力头式钻机。
- Check valve guiding shall be plastic to plastic. 止回阀引导装置应该是塑料对塑料。
- Remove check valve and valve seal from booster. 从倍力器上卸去逆止阀和阀门密封。
- Connect vacuum hose to booster check valve. 连接真空软管到增压器检测阀。
- To test for tightness of second check Valve. 检测第二止回阀的密封性。
- ANSI FLANGED SWING CHECK VALVE CLAS. 美标法兰止回阀。
- Reassemble the Check valve modules. 重新组装止回阀模块。
- Connect vacuum hose to booster check valve . 连接真空软管到增压器检测阀。
- Perform automatic DNS operability check NOW? 演出自动dns的可操作性检查，现在呢?
- Purpose: To test check valve No. 1 for tightness. 目的:检测止回阀1号的密封性。
- Hydraulic operated directional valve 液控换向阀
- Sticky outlet check valve poppet. 1检查过滤的进水管线。
