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