Liquid metering valve

作者: Jr. Walter H. Grant

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摘要: A liquid metering flush valve to be installed in connection with plumbing fixtures such as water closets, urinals, service sinks, and other equipment supply said a predetermined amount of water; which may potable water, contaminated sea corrosive and/or unfiltered oil combinations; at controlled pressures, flow rates volumes. The basic design is on the hydraulic principal proportional through orifices, regardless pressure fluctuation but employs use four chambers, two are sealed contain not only an orifice therebetween filtered, non-corrosive captive assure protection from action dirt damage or clog it prevent working properly. One body for either exposed concealed installation simplify stocking production requirements costs promote economy adjustable feature permits minimum volume. flexibility selection Diaphragm model, Bellows Piston model best utilizes modern materials maximum when handling liquids than clean, grit free, non-corrosive, water.

参考文章(4)
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Joseph W Nethery, Automatically-acting valve. ,(1901)
Thomas L Titus, Self-closing valve. ,(1917)