Fluid pressure balancing and mixing valve

Fluid handling – Self-proportioning or correlating systems – Self-proportioning flow systems


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G05D 1100




A device for balancing the pressures of two different feeds of fluid is disclosed, consisting of a housing and two longitudinally extending casing portions on each side of the housing and communicating therewith. The housing contains a longitudinally displaceable flexible but non-elastic diaphragm. An actuating rod is rigidly secured to the diaphragm and extends into both casing portions. Each of the latter contains a slide valve secured to the outer ends of the actuating rod. Each slide valve is a hollow rigid tube having a slit in its surface. Each casing portion is provided with an outlet opening and an inlet opening. The fluids enter the inlet openings, flow through the slits in the slide valves and act on the diaphragm through the casing portions before flowing out through the outlet openings at balanced pressures.

patent: 1902336 (1933-03-01), Murray
patent: 2832573 (1958-04-01), Rees
patent: 3083942 (1963-04-01), Hirst et al.
patent: 3324872 (1967-06-01), Cloud
patent: 3724480 (1973-04-01), Povalski et al.
patent: 3896836 (1975-07-01), Labarre
patent: 3921659 (1975-11-01), Rudewick
patent: 4094333 (1978-06-01), Petursson


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