Abstract: A ball cock and float assembly (10) having a shank portion (11) that is adapted to be insertably received through the inlet opening (13) in the bottom wall (14) of a reservoir tank (12). A support means (50) extends upwardly of the shank portion (11). The support means (50) comprises post means (30) that extend fixedly upwardly from the shank portion (11), and extension means (46) that are telescopically slidable along the post means (30). A lock (42) secures the extension means (46) at a selected position along the post means (30) to provide in gross adjustment in the vertical height of the float assembly (110) that is movable along the extension means (46). A valve (55) is carried by the extension means (46) upwardly of the float means (110). An inlet conduit (52) communicates from the shank portion (11) through the post and extension means (30, 46) to the inlet port ( 54) of the valve means (55).

Abstract: The present invention is directed to a hydraulically balanced ballcock (10). A unique valve element (60) is translationally slidable within a valve housing (22) provided in the body (11) of the ballcock (10). A washer (74) received on the head (70) of the piston (61) in the valve element (60) moves in and out of engagement with a valve seat (85) presented from the valve housing (22) to effect closure and opening of the ballcock (10). A bore (95) extends through the piston (61) and stem portion (62) of the valve element (60) to communicate with a control chamber (125). Radial orifices (98 to 101) through a nozzle (73) that extends forwardly of the piston head (70) and through the washer (74) are located to communicate the pressure resulting from the venturi effect of fluid flow between the washer (74) and the seat (85) to the control chamber (125) by virtue of the bore (95).

Abstract: The present invention is directed to a hydraulically balanced ballcock (10). A unique valve element (60) is translationally slidable within a valve housing (22) provided in the body (11) of the ballcock (10). A washer (74) received on the head (70) of the piston (61) in the valve element (60) moves in and out of engagement with a valve seat (85) presented from the valve housing (22) to effect closure and opening of the ballcock (10). A bore (95) extends through the piston (61) and stem portion (62) of the valve element (60) to communicate with a control chamber (125). Radial orifices (98 to 101) through a nozzle (73) that extends forwardly of the piston head (70) and through the washer (74) are located to communicate the pressure resulting from the venturi effect of fluid flow between the washer (74) and the seat (85) to the control chamber (15) by virtue of the bore (95).