Solar heating check valve and flow indicator

Details Solar heating check valve and flow indicator Solar heating check valve and flow indicator

1982-11-18

1984-10-02

Scott, Samuel

Fluid handling

With indicator, register, recorder, alarm or inspection means

Inspection means

137528, 116274, 116276, 126419, F16K 1502

Patent

active

044742096

ABSTRACT:
Disclosed is a pair of check valves for a home solar heating apparatus, one check valve for the solar collector supply line and one for the return line. The check valves have a transparent portion and an impeller which rotates during water flow and is located in the transparent portion, providing a visual check on water flow. Further, the impeller in the collector supply line acts as a check valve element which is gravity closed due to the impeller's greater-than-water density. Analogously, the impeller in the solar collector return line acts as a check valve due to its less-than-water density, these check valves operating to permit the usual direction of flow powered by a circulating pump but impeding the opposite direction of flow powered by thermosyphoning.

REFERENCES:
patent: 442465 (1890-12-01), Stamer
patent: 1370483 (1921-03-01), Powell
patent: 1385973 (1921-07-01), Brown
patent: 1897492 (1933-02-01), Ledoux
patent: 2599201 (1952-06-01), Rubenstein et al.
patent: 4210125 (1980-07-01), Fender
patent: 4329979 (1982-05-01), Frank

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