| 摘要 |
PURPOSE:To recover gas pressure in such a manner as to produce no bad effect upon a small-sized peripheral gas burner and to always secure a safe use by throttling the quantity of gas supplied to a large-sized gas burner corresponding to the pressure level of lowered gas pressure. CONSTITUTION:When the service gas pressure P1 drops, a diaphragm 2 lifted up by the service gas pressure is lowered by the spring force of a spring 6, so that a valve body 11 is pushed down through a valve shaft 10 to reduce the angle of opening with a valve hole 9, so as to throttle the quantity of gas supplied to a main gas burner of a large-sized gas burner in such a manner as to produce no effect upon a small-sized gas burner. The quantity of gas passing through a by-pass passage 8 is the minimum allowable gas quantity of the large-sized gas burner, so that it has no effect upon other devices even if the valve hole 9 is closed fully. |
