Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Patent
1988-06-22
1989-12-05
Fisher, Richard V.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
137494, 1375991, 2102212, 210254, 261 66, 261 76, 261DIG39, 261DIG75, C02F 174
Patent
active
048850845
ABSTRACT:
A nozzle/venturi with a bypass for controlling the pressure differential and therefore the amount of air which is entrained into the fluid stream. The nozzle/venturi assembly is utilized in a filtering system for removing contaminants from a water supply. The nozzle/venturi assembly includes a nozzle/venturi with a water inlet, an air inlet and an outlet passage and a bypass valve with an adjustable passageway to control the fluid flow through the bypass. The bypass valve includes a diaphragm which is effected by the downstream pressure resulting in an adjustment of the pressure differential and a spring biased seal valve to control the pressure which will open the bypass. The nozzle/venturi assembly provides efficient and precise control of the pressure differential to ensure that a constant amount of air is entrained into the fluid stream through the entire pump cycle.
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Drodge Joseph
Fisher Richard V.
Flint & Walling, Inc.
Sutherland Malcolm L.
Zarins Edgar A.
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