Filter backwash water saver and water filter to clean swimming p

Details Filter backwash water saver and water filter to clean swimming p Filter backwash water saver and water filter to clean swimming p

1984-05-30

1985-10-08

Fisher, Richard V.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

210169, 210278, 13762546, B01D 4100, B01D 4500

Patent

active

045459053

ABSTRACT:
Filter backwash water saver and water filter to clean swimming pool filters which takes backwashed water from a filter which is usually discharged to the environment and instead filters the backwashed water and returns it to the system. This conserves water and protects the environment. The backwashed water is pumped into a filter contained in a canister which is suspended by a bracket which mounts to the pool cowling. The filtered backwash water is returned to the system by a specially designed chute which fits into the pool skimmer. A vinyl check valve is mounted into the chute to allow water to flow normally when the pool system is forward pumping by allowing the water to flow into the skimmer under the vinyl check valve. When backwashing is desired, the weight of the backwashed water flattens the vinyl check valve and only backwashed water recirculates. The filter material is easily accessible and easy to change.

REFERENCES:
patent: 2723678 (1955-11-01), Wilson
patent: 3085549 (1963-04-01), Kacsuta
patent: 3186550 (1965-06-01), Beduhn
patent: 3365604 (1968-01-01), Horan, Jr.
patent: 3370408 (1968-02-01), Lehrer et al.
patent: 3827568 (1974-08-01), Toth et al.
patent: 4108775 (1978-08-01), Wilkes et al.
patent: 4194975 (1980-04-01), Baker
patent: 4454035 (1984-06-01), Stefan

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