Multiply configurable backflow preventer

Details Multiply configurable backflow preventer Multiply configurable backflow preventer

1989-12-19

1991-02-12

Fox, John C.

Fluid handling

Line condition change responsive valves

Direct response valves

137271, 285181, F16K 1700

Patent

active

049916220

ABSTRACT:
A backflow preventer assembly is provided, which allows for connection of the assembly to the variety of water line configurations. The valve device is attached to at least one rotatable, sealing flange which is rotatable from an in-line configuration to an L-shaped configuration. A rotating sealing flange is provided at each of the inlet opening and outlet opening of the valve device. A stop valve is positioned in each of the rotating flanges.

REFERENCES:
patent: 1031642 (1912-07-01), Haase
patent: 2454160 (1948-11-01), Greene
patent: 2581047 (1952-01-01), Salmond et al.
patent: 4639016 (1987-01-01), Rogers et al.
"Backflow Prevention Catalog", Cla-Val Co., P.O. Box 1325, Newport Beach, Ca. 92663. 1978

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