Backwash valve lever control system

Details Backwash valve lever control system Backwash valve lever control system

1983-12-12

1989-09-26

Fisher, Richard V.

Liquid purification or separation

Structural installation

Closed circulating system

13762529, 210278, 210426, 210429, B01D 2936

Patent

active

048698172

ABSTRACT:
A valve structure for a swimming pool water filter includes:

REFERENCES:
patent: 3316937 (1967-05-01), Friedman et al.
patent: 3451554 (1969-06-01), Wade
patent: 3640310 (1972-02-01), Erlich
patent: 3707233 (1972-12-01), Lerner
patent: 3809247 (1974-05-01), Brett
patent: 4216798 (1980-08-01), Tscherner

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