| 摘要 |
A mixing valve 10 includes hot and cold fluid inlets 22, 24 to a mixing chamber 14 leading from which there is a mixed fluid outlet 20, the valve further including a cold fluid outlet 34 though which fluid from the cold inlet may pass without entering the mixing chamber. The cold fluid inlet and outlet may be liked by a bypass conduit 30 extending either side of the mixing chamber. The flow of hot and cold fluid into the mixing chamber may be controlled by piston assembly 36 and thermostat 38 responsive to changes in fluid temperature by means of the expansion of a wax/copper mixture lining the piston. A control knob 46 may provide manual control of the valve. The valve may be sued in domestic underfloor heating. The cold fluid outlet may return fluid to a boiler to be reheated. |
