Float valve

Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve

Patent

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Details

137426, 137433, 137443, F16K 3122, F16K 3300

Patent

active

046403078

ABSTRACT:
A float valve mechanism for a cistern or tank comprising a housing (20,22) defining a closed chamber (24) having an inlet port (26) connected to an inlet pipe (16) to the cistern or tank, an outlet port (28) from the chamber having a valve seat (30) surrounding the port. A valve member (34) passes through the opening and has a valve head located within the chamber, the valve head being integrally formed, preferably from a plastic material, with a lever (38) which is pivotal about axis (42) and carries a float (54). The valve head (36) is pivotally movable an integral manner with the lever along a path passing through the outlet port (28) of the chamber. Water pressure within the chamber normally urges the valve to the closed position and the weight of the float when the water has fallen below a given level in the tank overcomes this pressure to allow water to flow from the chamber into the cistern.

REFERENCES:
patent: 717450 (1902-12-01), Prowant
patent: 1113648 (1914-10-01), Karlson
patent: 1600670 (1926-09-01), Hess
patent: 1732222 (1929-10-01), Cantrall
patent: 2499409 (1950-03-01), Norway
patent: 2507545 (1950-05-01), Samiran
patent: 2756769 (1956-07-01), Martin et al.
patent: 3139897 (1964-07-01), Morgan et al.
patent: 3158173 (1964-11-01), Bachli et al.
patent: 3331387 (1967-07-01), Walters
patent: 3342207 (1967-09-01), Ross
patent: 3511265 (1970-05-01), Martin
patent: 3837015 (1974-09-01), Whitaker
patent: 4026515 (1977-05-01), Grove
patent: 4335741 (1982-06-01), Nasser

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