| 摘要 |
A gas regulator includes an actuator, a valve, and a cartridge disposed w ithin the valve to advantageously direct, or "boost," fluid downstream and a way from the actuator under normal operating conditions, thereby increasing the operating efficiency of the regulator. The cartridge includes a first po rtion with a first diameter and a second portion with a second diameter that is greater than the first diameter. During normal operation, the first port ion receives a valve disc of the actuator within generally tight tolerances such that the valve disc and the cartridge restrict fluid communication betw een the valve and the actuator. This directs or "boosts" the gas toward the outlet of the valve. Additionally, during a relief operation, the second por tion of the cartridge receives the valve disc to allow the free flow of gas to the actuator. |
