| 摘要 |
<p>A valve suitable for controlling gas flow, especially to the burner of a gas-fired appliance, is of the so-called "disc" type in which the flow control member (10) has an operative face which rotates over a plane surface in the valve housing (2) to control gas flow through an opening (5) in that surface. The valve can be mounted on a gas rail (1) to control flow from the rail, in which case the rail may form part of the valve housing (Figure 7) and, in particular, that part providing the plane surface in which the opening (5) is formed. A sealing member (9) is located between the plane surface and the operative face of the flow control member (10). The valve has a spindle (16) which can be releasably-coupled to the control member (10) to rotate the latter. <IMAGE></p> |
