Smooth-opening, low-hysteresis ball head valve

Details Smooth-opening, low-hysteresis ball head valve Smooth-opening, low-hysteresis ball head valve

1993-02-18

1993-10-19

Nilson, Robert G.

Fluid handling

Processes

Carbonated beverage handling processes

1375135, 137587, 220746, F16K 1504

Patent

active

052536688

ABSTRACT:
A smooth-opening, low hysteresis, pressure-operated ball head valve connected between a fuel tank and vapor trap in a vehicle fuel system for providing smooth, two-stage, low hysteresis vapor flow. The ball valve element is positioned within a cylindrical retainer in the valve body, and the dimensions of the various valve orifices and the geometry of the retainer are determined in view of a specified lift off pressure and ball weight to achieve these flow characteristics.

REFERENCES:
patent: 3062525 (1962-11-01), Shutmaat
patent: 4760858 (1988-08-01), Szlaga

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