| 摘要 |
A plug and ball injector valve is provided which utilizes seals mounted in standard grooves and an arrangement of pressure balancing cavity areas brought into communication with the seals to balance the fluid pressure across the seals before such seals are exposed to unpressurized ports or passageways. A drain port is arranged in the vicinity of the loading port of the valve to limit spillage and leakage of the line fluid passing through the valve.
|
