| 摘要 |
<p>A pressure regulator (10) for supplying water to a poultry watering system or the like includes a control assembly (34) for operating the pressure regulator (10) in a normal or "on" mode, an off mode or a flush or bypass mode. A desired operating pressure is set by loading a diaphragm (20) responsive to output pressure changes. Diaphragm movement is transferred by the control system (34) to a valve member (32) cooperating with an inlet orifice (30). The control system (34) includes a spring (60) captured in a preloaded state between first and second end members (62 and 64), one connected to the valve member (32) and the other connected to the diaphragm (20). A knob (36) is rotated from a normal "on" position to an off position and a collar (88) pushes the end members (62 and 64) together and pushes the valve member (32) against the orifice (30). The knob (36) is rotated to a flush or bypass position and the collar (88) pulls the end members (62 and 64) together and pulls the valve member (32) away from the orifice (30). The inlet orifice (30) and an inlet port (26) are parts of a removeably mounted inlet member (96).</p> |
