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    • 13. 发明授权
    • Anti-syphon toilet reservoir valve
    • 防虹吸马桶水箱阀
    • US3902518A
    • 1975-09-02
    • US40005273
    • 1973-09-24
    • FISCHER EDWARD J
    • FISCHER EDWARD J
    • E03C1/10F16K15/02F16K27/02F16K21/18
    • E03C1/104F16K15/02F16K27/0209Y10T137/3149Y10T137/7915
    • A toilet reservoir valve assembly incorporating a mounting fixture rigidly fixed in the bottom panel of a toilet reservoir tank. A water supply pipe is compressively attached by a threaded nut to the bottom of the mounting fixture. An anti-syphon valve assembly is rigidly fixed to the top of the supply pipe and extends into the bottom of the mounting fixture. The valve assembly incorporates a mechanically free valve. The valve opens by positive water pressure in the supply pipe and simultaneously throttles the flow of water since the valve moves vertically inside a concentric tube that constitutes an upper extension of the anti-syphon valve assembly. The valve closes against an annular seat by zero or negative pressure in the supply pipe, thus preventing tank water from syphoning into the supply pipe.
    • 一个马桶水箱阀门组件,其内装有刚性地固定在马桶储水罐的底板中的安装夹具。 供水管通过螺母与安装夹具的底部压缩连接。 防虹吸阀组件刚性地固定在供应管的顶部并延伸到安装夹具的底部。 阀组件包含机械自由阀。 阀门通过供水管中的正水压力打开,同时节流水流,因为阀门在构成防虹吸阀组件的上延伸部的同心管内垂直移动。 阀门在供气管上以零或负压关闭环形阀座,从而防止油箱水进入供油管道。