Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1984-02-16
1985-07-30
Cohan, Alan
Fluid handling
Line condition change responsive valves
Direct response valves
13751629, 251 64, F16K 2104, F16K 2110
Patent
active
045315418
ABSTRACT:
The invention, according to the first embodiment depicted, comprises a plate-type valve having a valving element movable between a valve guard and a valve seat. The movable valving element has a plurality of flow ports formed therein each of which communicates with a port formed in the valve guard. Too, the valve seat has ports formed therein, but the latter are out of registry with the valving element and valve guard ports. Accordingly, with the element closed upon the valve seat, fluid flow through the valve is prevented, and with the valving element removed from the seat, fluid flow is accommodated. Movement of the valving element away from and then onto the valve seat subjects the ends of the ports in the valving element to fatigue, failure and fracture. The valve seat has a circular recess formed therein, whereat the periphery of the valving element would impact, and loosely set in the recess is an impact ring. Accordingly, the shock of impact of the plate-type element on closing is less likely to precipitate fatigue and failure of the port ends; the periphery of the valving element impacts upon the impact ring, and the latter dissipates the impact forces.
REFERENCES:
patent: 2578590 (1951-11-01), Perrault
patent: 3037523 (1962-06-01), Szaniszlo
patent: 3177893 (1965-04-01), King
patent: 3703912 (1972-11-01), Bauer et al.
patent: 3837357 (1974-09-01), Slaughter, Jr.
patent: 3857408 (1974-12-01), Rhodes et al.
patent: 4259858 (1981-04-01), Freeman et al.
patent: 4398559 (1983-08-01), Bunn et al.
Cohan Alan
Ingersoll-Rand Company
Murphy Bernard J.
Rivell John A.
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