| 摘要 |
<p>Safety valve comprises two axial chambers held at the two different pressure and separated by a central liquid filled compartment. A pressure difference causes the mobile partitions, forming the ends of the central chamber to move forcing liquid through a plate orifice fitted with a rigid shaft slidable in the orifice and contacting to a release valve situated in one or both of the mobile partitions. The valve seats are made water-tight by elastic annuli on the cone shaped valve plug seating onto the plane orifice or vent periphery. the valves and mobile partitions are spring loaded to return each rapidly to its rest or equilibrium position.</p> |
