Backflow safety valve for therapy pools

Details Backflow safety valve for therapy pools Backflow safety valve for therapy pools

1975-06-25

1976-09-07

Cline, William R.

Fluid handling

Systems

With pump

13753317, 417216, F16K 1502, A47K 310

Patent

active

039788865

ABSTRACT:
A valve which is particularly adapted for use as a backflow safety valve for therapy pools, in which it prevents water from flowing through the air supply line and damaging the air blower. When the water outlets of the therapy pool are temporarily blocked, water which is forced into the air supply line by water pressure flows into the open end of a cup shaped valve member and moves it to closed position within the air supply line. The safety valve will automatically re-open when the blockage is removed.

REFERENCES:
patent: 776377 (1904-11-01), Beers
patent: 2845945 (1958-08-01), Manousi, Jr.
patent: 3036594 (1962-05-01), Salisbury
patent: 3414003 (1968-12-01), Wyckoff
patent: 3457949 (1969-07-01), Coulter
patent: 3580275 (1971-05-01), Hanson et al.
patent: 3664371 (1972-05-01), Schneider
patent: 3915450 (1975-10-01), Flewwelling et al.

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