Requirement: Air inlet must start to open when down stream pressure is 1.0 PSI or above.
Requirement: Air inlet must start to open when down stream pressure is 1.0 PSI or above.
要求：当下游流体压力在1.0PSI及以上时，空气进口必须开始打开。
Requirement: Air inlet must start to open when down stream pressure is 1.0 PSI or above.
要求：当下游流体压力在1.0PSI及以上时，空气进口必须开始打开。