| 摘要 |
<p>A valve assembly for controlling the flow of flammable gas to a burner, comprising a body having a passageway for flow of gas from an inlet and a valve having a valve seat and a closure which valve is positioned between first and second outlet channels from the passageway wherein the first and second channels are axially separated along the passageway such that axial movement of the closure along the passageway effects opening and closing of the valves.</p> |
