Valves and valve actuation – With material guide or restrictor – Baffle or zigzag flow restrictor
Patent
1985-04-18
1986-06-24
Cohan, Alan
Valves and valve actuation
With material guide or restrictor
Baffle or zigzag flow restrictor
13762517, 1376254, 251118, F16K 4702, F16K 1106
Patent
active
045963762
ABSTRACT:
A mixer valve in which a fixed hard material plaque has passage openings which communicate with two feeding pipes, a plastic material control slide is connected to a valve operator, and a movable hard material plaque, rigidly connected to the control slide, cooperates through a portion of its peripheral edge with the passage openings of the fixed plaque, in order to control the delivered liquid flow rate and the mixing ratio of the liquids fed to the valve; the plastic material slide has a series of blades disposed in a comb-like fashion, which extend up to the vicinity of that edge portion of the movable plaque, and at least a part of which corresponds, on the side which is axially opposite the fixed plaque, to a window communicating with the space situated behind the control slide. Preferably, the control slide is guided for a diametrical displacement in a rotary guide ring, and this guide ring in its turn is provided with a series of blades disposed in register with the blades of the control slide. Thanks to these features the noise produced by the mixer valve is highly reduced.
REFERENCES:
patent: 3965935 (1976-06-01), Morisseau
patent: 4218041 (1980-08-01), Bernat
patent: 4301836 (1981-11-01), Hunziker
patent: 4325403 (1982-04-01), Uhlmann
Cohan Alan
Gevipi A.G.
Rivell John A.
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