| 摘要 |
A relief valve for relieving excessive fluid pressures in a fluid pressure system comprising: a valve body having a cavity therein and an inlet port and an outlet port in fluid communication with the cavity; and a plug assembly carried in the valve body for reciprocal movement between a closed position in which the plug assembly prevents flow of fluids through the inlet port and an open position, in which the plug assembly permits flow of fluids through the inlet port and into the cavity for exit through the outlet port. A release mechanism is carried by the valve body for holding the plug assembly in the closed position but responsive to fluid pressures above a predetermined amount at the inlet port to release the plug assembly for movement toward the open position, the release mechanism including a split ring engageable with a corresponding annular shoulder carried by the valve body for holding the plug assembly in the closed position, the split ring being radially contractable in response to predetermined fluid pressures for disengagement from said annular shoulder, allowing the plug assembly to move toward the open position.
|
