Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Patent
1990-08-16
1991-09-17
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
13753331, 251333, F16K 17194
Patent
active
050485601
ABSTRACT:
A valve assembly, particularly a breather valve assembly for fluid storage tanks, is described. This assembly comprises a valve housing including a fluid conduit and a valve seat defining a fluid outlet of the fluid conduit, and a pressure pallet sized and adapted to move away from the valve seat in response to an increased fluid pressure in the fluid conduit. A seal is provided and acts to effectively seal the fluid outlet against fluid flow from said fluid conduit when the seal is in contact with the valve seat. The seal which includes first and second flexible seal elements which are unsecured to the pressure pallet at or near their respective outer peripheries, is structured so that fluid from the fluid conduit is in the space between the first and second seal elements when the seal means is in contact with the valve seat.
REFERENCES:
patent: 1918337 (1933-07-01), Jones
patent: 2317923 (1943-04-01), Lebo et al.
patent: 2732856 (1956-01-01), Jurs et al.
patent: 2879786 (1959-03-01), La Delle Heideman
patent: 3235225 (1966-02-01), Dickinson et al.
patent: 3269411 (1966-08-01), Teston
patent: 3307633 (1967-03-01), Newall
patent: 3394732 (1968-07-01), Lisciani
Product Data Sheet EV-510 Emergency Vent Model 94510, 5/1989, Shand and Jurs.
Product Data Sheet BV-020 Breather Valves Model 94020, Shand & Jurs (no date).
Jannotta Louis J.
Reip Raymond G.
Hepperle Stephen M.
L&J Engineering Inc.
Uxa, Jr. Frank J.
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