PRESSURE REGULATOR

摘要

A variable device 10' for regulating the outlet pressure of a fluid from a valve body 15', includes a pressure-sensing chamber 60' having a wall formed by a resilient self-restoring diaphragm 20' which is responsive to pressure in the chamber 60'. A valve element 80' connected to the diaphragm 20' controls flow into the chamber 60'. Increased pressure in the chamber 60' decreases t he flow into the chamber 60' and decreasing pressure increases flow whereby flu id flow out from the chamber 60' is maintained at a desired pressure. The outle t pressure is adjusted by deflecting the diaphragm 20' in a direction to open the valve while permitting a section of the diaphragm 20' connected to the valve member 80' to remain responsive to the pressure in the chamber 60'. An adjustment cover 150 is provided to adjustably deflect the diaphragm 20' and includes a catch mechanism 158 to allow adjustment of the fluid outlet pressures and also retain the device 10' at a desired value. An indicator arrangement 166 may be provided to visually indicate the fluid outlet pressu re.