通过停发阀的控制脉冲，停止可控阀工作的操作。
闭锁阀 [机] holding valve ; [机] blocking valve
锁闭阀 Lock valves ; Locking valve
高旁减温水闭锁阀 HP ATTEMP BLOCK VLV
饮用水专用暗杆锁闭阀 RVHB
锁闭阀系列 lock off valve series
分析了闭锁阀在使用过程中出现的问题，阐述了改用智能卡锁控阀的使用方法。
The problems existing in the course of utilization of locked valves are analyzed, and the method for using intelligent card locked valves are described.
转阀通过一个液压锁与增压缸相连。增压缸与四个闭锁阀相连。
The rotating valve is connected with pressure cylinder which is connected with four shut off valves through one hydraulic lock.
四个闭锁阀分别与四个油气弹簧相连通。
The four shut off valves are connected respectively to the four oil and gas springs.
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