Pressure relief after electric shut-off of pump

Details Pressure relief after electric shut-off of pump Pressure relief after electric shut-off of pump

1989-03-06

1990-05-29

Fox, John C.

Fluid handling

Systems

With flow control means for branched passages

251263, 200 6186, F16K 1100

Patent

active

049287222

ABSTRACT:
A valve control mechanism for a paint spraying system provides for pressure relief prior to turn-off of the compressor. A pair of interlocking knobs, a pressure control knob and an off-prime-spray knob, are mechanically interlocked so that the compressor can only be turned on and off in a low pressure condition. When spraying has been completed, it is necessary to first operate the off-prime-spray knob to the prime position at which a cam structure opens the off-prime-spray valve for an immediate pressure relief prior to turn off of the pump.

REFERENCES:
patent: 3249123 (1966-05-01), Berg
patent: 3409044 (1968-11-01), Sobek et al.
patent: 3603347 (1971-09-01), Paolini
patent: 3700002 (1972-10-01), Christie

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