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1．应力要保证放空管与排汽管之间有一定的间隙并允许集水盘有一定的热膨胀，否则排汽管（或集水盘）就要与固定在建筑物上的放空管接触，这样对安全阀产生的约束作用并使阀体产生扭曲，从而造成安全阀不稳定性动作。同理，如果安全阀排汽管弯头下部的流水管没有充分地采用柔性
1. Stress to ensure that there is a certain gap between the vent pipe and the exhaust pipe and allow a certain thermal expansion of the catchment plate, or exhaust pipe (or catchment plate) should be fixed with the vent pipe in contact with the building, This creates a constraint on the safety valve and distorts the valve body, resulting in a safety valve instability. Similarly, if the lower part of the safety valve exhaust pipe bend pipe is not fully flexible