| 摘要 |
PURPOSE:To offer a fluid flow control valve to be used in a water governor etc. of a home-use gas boiler etc. which does not require use of any diaphragm by such a construction that a pressure correction valve consolidated with the control valve is furnished on the high pressure side of the inflowing side of rate- of-flow control part in order to separate the high pressure part from the low pressure part and to hold the rate of flow always constant. CONSTITUTION:By means of a control valve 3 including a pressure correction valve 2, the water governor 1 forms a high pressure chamber 5 for water inlet 4 and an intermediate pressure chamber 7 to which the pressure is reduced by the control valve 3 and water body control part 6. A resistant orifice 8 is furnished on the outflowing side of the control valve 3, to form a low pressure chamber 9 for flowing-out to the water outlet 10. The pressure in this low pressure chamber 9 is led to the bottom of the pressure correction valve 2 through a conduit pipe 11; that is to say, the pressure correction valve 2 separate the high pressure chamber 5 from low pressure chamber 9. A spring 13 is provided for the purpose of hold the control valve 3 open always to the water body control part 6. Accordingly, there is no need to use any diaphragm. |
