| 摘要 |
<p>A pressure regulating device (100) includes sensing element (20) responsive to a reference control pressure. It includes a body member with an inlet (10a)and outlet (10b) connected by passageway (150). The sensing element (20) is along the passageway (150) and it has a closed position and open position. The reference control applied to one side of the sensing element (20) and the variable fluid pressure is applied to the opposite side of the sensing element (20). The sensing element (20) moves to the open position when the variable pressure at the inlet is less than the reference pressure to allow fluid at high pressure to flow into the outlet (10b) past the sensing element (20) on a side opposite to the reference control pressure side. Once force produced by pressure under the sensing element (20) equals to the force produced by the reference control pressure on top of the sensing element (20), the sensing element (20) closes to prevent further flow.</p> |
