Apparatus and method for calibrating float valve

Details Apparatus and method for calibrating float valve Apparatus and method for calibrating float valve

1997-10-29

1999-09-21

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137 43, 137428, F16K 2404

Patent

active

059540826

ABSTRACT:
An improved apparatus and method for calibrating a float-type vent valve for use in an automobile fuel tank. The valve is provided with a calibration plate in the lower end thereof below the float, the calibration plate defining an axially-adjustable support for the spring which balances the float. The calibration plate includes a force probe aperture through which a force measuring device of known type can be inserted to measure the downward force of the spring-balanced float at a specified distance from closure, preferably a near-closed position. The calibration plate then is adjusted up or down as needed until a position is determined where the spring-balanced float is properly calibrated, and then the calibration plate is permanently secured in place on the valve body so that the valve remains calibrated.

REFERENCES:
patent: 4679581 (1987-07-01), Mears
patent: 5597008 (1997-01-01), Overdiek et al.

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