Water and concentrate supply valves for proportioning mixer-disp

Details Water and concentrate supply valves for proportioning mixer-disp Water and concentrate supply valves for proportioning mixer-disp

1975-04-17

1977-03-29

Nilson, Robert G.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

13761421, 13763015, 251332, F16K 1900

Patent

active

040143635

ABSTRACT:
A portable mixing-dispensing device having a manual flow control valve means between a ventable flow control chamber and a solution-proportioning chamber, and a manual feed valve between the proportioning device and a source of concentrate supplied at a negative gauge pressure, same including means to selectively coordinate the operation of the valves. The feed valve serves also as an anti-backflow check valve for the concentrate supplied under a negative gauge pressure as well as maintaining the prime thereof without dilution when concentrate is not being supplied to the mixing chamber. A translucent concentrate supply tube readily visible from above the mixing chamber serves as a visual check as to the prime of the concentrate.

REFERENCES:
patent: 1998913 (1935-04-01), Wheaton
patent: 2763407 (1956-09-01), Rowell
patent: 3709259 (1973-01-01), Hechler

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