relief valve pressure adjustment；安全阀压力调整 relief valve pressure check；安全阀压力检查 relief valve pressure reading；安全阀压力读数 ..
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Requirements: the pressure differential relief valve must operate to maintain the "zone" between the two check valves at least 2 PSI less than the supply pressure.
要求：压差安全阀必须具有将两个止回阀之间的“区域”压力维持在比供应压力低至少2 P SI的功能。
If the input pressure has reached requirements, should check air filter relief-pressure valve regulation is correct, table press show you could meet the cutting requirements.
如输入气压已达要求，应检查空气过滤减压阀的调节是否正确，表压显示能否满足切割要求。
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。
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