Do check valves operate properly?
止回阀是否工作正常？
提供止回阀。
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。
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。
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。
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