Ball cock assembly

Details Ball cock assembly Ball cock assembly

F - Mech Eng,Light,Heat,Weapons

16

K

4/22

F16K 31/26 (2006.01) F16K 33/00 (2006.01) F16K 47/02 (2006.01)

Patent

CA 1162004

Ball Cock Assembly Abstract A ball cock assembly (10) mounted to a water supply pipe (12) in a fill tank includes a valve housing (16) in which is mounted a valve (18) for regulating the flow of water through the ball cock assembly (10). The valve housing (16) includes a central passage (40) having chambers (42, 46) of differing diameters. The chamber (46) is in fluid communication with tank fill tube (22) and back fill tube (24). The valve (18) is generally cylindrical in configura- tion and includes an upwardly facing first piston surface (76) and a downwardly facing second piston surface (84) upstream of the first piston surface (76). The valve (18) also includes first and second shoulders (78, 80) which seat against valve seats (44, 48) in the central passage (40) of the housing (16). The valve (18) includes an orifice (90) therethrough which communicates fluid through chamber (42) above the first piston surface (76). The valve (18) also includes ports (54) which are selectively aligned with the outlets of the valve housing during reciprocation of the valve (18). The valve is biased toward a closed position by a conventional float (20). In operation, a gradual closing of the valve (18) is provided by a differential fluid pressure acting against the first and second piston areas (76, 84).

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