| 摘要 |
<p>A thermostatic control device (100) for the regulation of gas flow within a gas appliance comprises a cylindrical plug (110) axially moveable within a gas flow bore to provide at least ON/OFF gas flow control between a gas inlet (115) and a main outlet (152) and a supplementary outlet (142). Thermal regulation of the main outlet is provided by a diaphragm actuated valve (109) adjustable by rotation of the cylindrical plug (110). Regulation of the supplementary outlet (142) is provided by control flats (137) disposed on the cylindrical plug (110) which is again rotated to bring control flats (137) into and out of proximity to the supplementary outlet (142).</p> |
