Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Patent
1985-12-05
1987-09-29
Michalsky, Gerald A.
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
137217, 13762541, 137854, F16K 2402
Patent
active
046963227
ABSTRACT:
A faucet valve 10 includes a ball valve 28 seated in a valve chamber 18. The ball valve 28 has a plurality of apertures 46 circumferentially spaced about the control stem 32 which extends through an opening 60 in the cap assembly 48 of the valve housing 16. A check valve 66 is formed within the hollow interior 62 of the ball valve and includes a disc section 70 that mounts a flap valve 78. A shield formed by a cylindrical wall 80 downwardly depending from the disc section 70 and a snap ring 84 fitted on the lower end of the cylindrical wall protects the flap valve from undue water turbulence. Negative pressure in the supply inlet opens the flap valve 78 to draw air through passageway 64 formed by the apertures 46 and auxiliary opening 60 and hollow interior 62 of the ball valve seated in the valve chamber 18.
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Hutto Joe D.
Knapp Alfons
Roland Robert D.
Masco Corporation
Michalsky Gerald A.
Permut Steven L.
Redman Leon E.
Sutherland Malcolm L.
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