Do check valves operate properly?
止回阀是否工作正常？
提供止回阀。
Swing Check valves prevent reversal of flow through pipe lines.
旋启式止回阀可以防止管路中的流体倒流。
A pressure differential relief valve is located in a zone between the check valves.
压差安全阀位于止回阀之间的区内。
Check all cocks and valves of each system in the correct position.
检查各系统所有旋塞和阀门的位置。
Check whether all the valves of the cooler are in a state of normal working.
检查冷却器各个阀门处于正常工作状态。
Check whether all the valves of the cooler are in a state of normal working.
检查冷却器各个阀门处于正常工作状态。
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