Pressure differential valve for swimming pool

Details Pressure differential valve for swimming pool Pressure differential valve for swimming pool

1975-05-29

1976-11-02

Cline, William R.

Baths, closets, sinks, and spittoons

Dry closets

With heating meas

137112, 13762513, 13762527, 137255, G05D 701

Patent

active

039887871

ABSTRACT:
A two-way valve operated by a pressure differential existing in the fluid lines controlled by the valve for use in swimming and therapeutic pool systems.

REFERENCES:
patent: 1575771 (1926-03-01), King
patent: 2354791 (1944-08-01), Boldt
patent: 2474304 (1949-06-01), Clancy
patent: 2634743 (1953-04-01), Audemar
patent: 2651491 (1953-09-01), Ashton et al.
patent: 2686052 (1954-08-01), Winkler et al.
patent: 3117587 (1964-01-01), WILLINGER
patent: 3608587 (1971-09-01), Zbell
patent: 3623165 (1971-11-01), Whittell, Jr.
patent: 3781925 (1974-01-01), Curtis et al.
patent: 3860033 (1975-01-01), Grove et al.

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