Relief vent will discharge water when, during no-flow periods, (1) the first check valve is fouled or (2) the inlet pressure to the device drops sufficiently due to upstream pressure fluctuations.
Relief vent will discharge water when, during no-flow periods, (1) the first check valve is fouled or (2) the inlet pressure to the device drops sufficiently due to upstream pressure fluctuations.
如果在无流动期间，安全阀排气口有水排出，则原因可能是，(1)第一止回阀受到污染，或(2)由于上游压力波动造成装置的进口压力下降太大。