Flow control apparatus

Details Flow control apparatus Flow control apparatus

1998-12-22

2000-08-29

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

137114, F16K 17168

Patent

active

061092886

ABSTRACT:
A flow control apparatus for regulating the flow of hot and cold water through a mixing valve and for preventing undiluted hot water from being inadvertently delivered to a common outlet includes a common chamber and a pair of diaphragm valves on opposite sides of the common chamber. It also includes a check valve in the common chamber for opening and closing the diaphragm valves. Conventional piping, preferably flexible piping is used to connect the mixing valve to a source of hot water and to a source of cold water. The diaphragm valves and check valve are connected and arranged to prevent the flow of hot water through the mixing valve in the absence of a flow of cold water. The flow control apparatus may also include a mechanism for overriding the mixing valve in order to deliver an undiluted flow of hot water to the common outlet.

REFERENCES:
patent: 2057194 (1936-10-01), Kagi
patent: 3642021 (1972-02-01), Muller et al.
patent: 4282902 (1981-08-01), Haynes
patent: 5095941 (1992-03-01), Betz
patent: 5111846 (1992-05-01), Hochstrasser et al.
patent: 5322084 (1994-06-01), Ghiassian

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