Therefore, when a pressurized diaphragm valve is closed to the recommended 10 ft-lbs. and the valve outlet is depressurized, the closing force on the seat is only 4 ft-lbs.

• 因此，当使用推荐的10ft-lbs力来关闭受压隔膜阀且阀门排气口压力下降时，在阀座上的关闭力量只有4ft-lbs。