Air and vacuum relief valve

Fluid handling – Diverse fluid containing pressure systems – Fluid separating traps or vents

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Details

137433, 137390, F16K 3122

Patent

active

047428430

ABSTRACT:
An air and vacuum relief value having a cylindrical housing defining a chamber and an aerodynamically shaped float body disposed for movement within said chamber between a lower, open position and an upper closed position, the float body having a generally inverted pear-shape configuration to prevent premature valve closure.

REFERENCES:
patent: 1049992 (1913-01-01), Catchings
patent: 4163456 (1979-08-01), Herron
Brochure entitled Air and Vacuum Relief Valves, distrubuted by Rain Bird Sales, Inc. (4 pgs.).
Brochure-Waterman Industries, Inc. relating to "Red Top Air Vents and Vacuum Relief Valves" and "Ag Vent Ball Air and Vacuum Valves-Models 200, 300, 400" (4 pgs.).
Brochure-Bermad, disclosing model number 4405, 4420, and 4415, Air and Vacuum Relief Valves (4 pgs.).

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