允许调节不受影响的供应压力的变化。
Allows the regulator to remain unaffected by supply pressure changes.
这个高品质的单位敏感阀系统使得它几乎不受供应压力变化。
The sensitive valve system of this high quality unit makes it virtually immune to supply pressure variations.
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。
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.
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