A sump pump was adapted for use in a sump with insufficient dimensions to accommodate an electric motor and a pump. When liquid rose to a predetermined level, a float tripped a switch that energized a solenoid controlled valve to a surface located air supply at, e.g., 120 psi. Air was provided through hose from the surface to a chamber in the pump that was filled or partially filled with water or other liquid, which entered through check valve. The air drove the water up an outlet to the surface. A timer closed the solenoid controlled air valve at predetermined intervals to allow refilling of the chamber by water or other liquid surrounding the chamber until the liquid dropped below the predetermined level and switch was opened by float.
Fluid Driven Sump Pump
1983
13 pages
Report
No indication
English
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