| 摘要 |
The water heater has a main valve (20, figure 2a) that is operated by a push button 22a to control the presence or absence of water at a flow rate control valve. One of two interchangeable on/off modules, 50a or 50b, may be provided to control the water flow. The on/off module 50a is a mechanical arrangement that includes a mechanical actuation member 76, a rotatable cam member 82, two springs 84 and 90, a housing 74, and attachment means 78 for the valve. The on/off module 50b is an electrical arrangement that includes an electrical actuation member such as a solenoid 52, a cantilever 56, an axially movable member 60, a housing 54, and attachment means 62 for the valve. The push button may consist of a push-push mechanism that moves the actuation member in opposite directions for consecutive pushes. |
