Fluid handling – Ambient condition change responsive – For controlling soil irrigation
Patent
1988-05-03
1990-07-03
Chambers, A. Michael
Fluid handling
Ambient condition change responsive
For controlling soil irrigation
239 63, 251 29, A01G 2500
Patent
active
049382489
ABSTRACT:
A control circuit includes one or more pressure activated fluid flow valves and one or more moisture and pressure sensitive controllers. Each controller includes a body with three chambers separated by movable diaphragm assemblies, one of which moves in response to changes in pressure exerted by the amount of moisture or fluid in the environment. Responsively, a passageway through the other diaphragm allows the passage of fluid and thus venting of the flow valves when a low moisture or fluid condition is detected.
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Chambers A. Michael
Irro-Controls Group
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