Safety valve arrangement for a single lever water tap

Details Safety valve arrangement for a single lever water tap Safety valve arrangement for a single lever water tap

1991-04-18

1992-06-23

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

4678, E03C 110

Patent

active

051234378

ABSTRACT:
A safety valve arrangement for a single lever water tap includes, disposed coaxially in series in a removable module 18, a first air ventilating valve 20, a second air ventilating valve 21, and a non-return valve 22 coupled to and controlling the second ventilating valve. The non-return valve is disposed in the mixed water outlet passage of the tap such that when it opens in response to a water demand, it automatically closes the second ventilating valve, and vice versa.

REFERENCES:
patent: 2472933 (1949-06-01), Anderson
patent: 3076470 (1963-02-01), Langdon
patent: 3286722 (1966-11-01), Royer
patent: 4696322 (1987-09-01), Knapp et al.
patent: 4827538 (1989-05-01), Heimann et al.
patent: 4977920 (1990-12-01), Oberdorfer
patent: 5009247 (1991-04-01), Oberdorfer
patent: 5038814 (1991-08-01), Gayton et al.

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