Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1980-06-19
1982-08-24
Cline, William R.
Fluid handling
Line condition change responsive valves
Direct response valves
1375124, F16K 1514
Patent
active
043456197
ABSTRACT:
A fill valve for controlling liquid level in a toilet tank or other tank includes a housing with an inlet, an outlet, a valve, and a level sensing mechanism for opening the valve to permit flow when the liquid level is below a predetermined value. A flow impedance path including a compact array of many baffles defining multiple consecutive right angle turns dissipates fluid pressure without substantial velocity increases and consequent cavitation and noise. Stable valve closure when the predetermined level is reached is effected by the mounting and configuration of a valve control lever. The fill valve may be disassembled for service without removal from the tank. A coupling and mounting nut assembly facilitates mounting without tools in a variety of tanks. A backflow preventer at the fill valve inlet includes an upstream disc member, a downstream cup member and a unitary elastic body having an outer ring portion and two inwardly extending check valve portions cooperating with flow passages in the disc and cup members.
REFERENCES:
patent: 2322631 (1943-06-01), Groeniger
patent: 2497906 (1950-02-01), Peters et al.
patent: 2875776 (1959-03-01), Skipwith, Jr.
patent: 2912999 (1959-11-01), Kersh
patent: 3065761 (1962-11-01), Peras
patent: 3160329 (1964-12-01), Radic et al.
patent: 3599657 (1971-08-01), Maldavs
patent: 3952766 (1976-04-01), Johnson
Cline William R.
JH Industries, Inc.
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