Moisture sensing valve

Details Moisture sensing valve Moisture sensing valve

1991-09-24

1992-06-16

Walton, George L.

Fluid handling

With leakage or drip collecting

62171, 137386, 137391, 261 97, 261106, 261DIG46, F16K 3118, F16K 3300, B01F 304

Patent

active

051217686

ABSTRACT:
A valve apparatus in which moisture sensitive material controls the opening size of a water valve. The moisture sensitive material is placed in an evaporative pad of an evaporative cooler. As the material dries, the moisture sensitive material constricts to open a valve draining a timing reservoir so as to hasten the refreshing of moisture to the evaporative pad. In an alternative embodiment, this moisture sensitive material located in the evaporative pad is balanced against an identical moisture sensitive material located in a constantly moisturized pad. This balancing of the materials permits fine control of the moisture content in the evaporative pad.

REFERENCES:
patent: 3874590 (1975-04-01), Gibson
patent: 4121608 (1978-10-01), MacLeod
patent: 4696319 (1987-09-01), Gant

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