Sprinkler head having protuberant ridge valve seat

Details Sprinkler head having protuberant ridge valve seat Sprinkler head having protuberant ridge valve seat

1988-06-24

1990-02-20

Basinger, Sherman D.

Fire extinguishers

Sprinkler heads

Collapsible strut

169 37, 169 90, 169 41, 169 40, 169 38, A62C 3708

Patent

active

049017993

ABSTRACT:
The invention relates to a fire protection sprinkler head having a base constructed for connection to a source of fire retardant fluid under pressure, a throat in the base through which fire retardant fluid can flow, a valve seat defined by the base about the periphery of the throat, and a resiliently flexible valve disk disposed across the throat and impressed upon the valve seat in sealing engagement. The valve seat has an arcuate profile segment, with a protuberant ridge disposed about the periphery of the throat and adjacent thereto. The ridge, in the region of its crest, defines a valve seat surface. The valve seat further has a recessed surface segment disposed radially outwardly of the throat, and divergent from a plane of the crest of the protuberant ridge. The valve disk has a sealing surface which is impressed upon the valve seat surface in the region of the crest of the protuberant ridge in sealing engagement over an annular region inward of the peripheral edge of the valve disk and in a manner to minimize the radial width of the valve seat surface, to thereby improve valve seat performance in resistance to leakage.

REFERENCES:
patent: 431971 (1890-07-01), Grinnell
patent: 431972 (1890-07-01), Grinnell
patent: 635749 (1899-10-01), Cox
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patent: 2553726 (1951-05-01), Rowley
patent: 3253657 (1966-05-01), Job
patent: 3336984 (1967-08-01), Macartney
patent: 3809118 (1974-05-01), Harding
patent: 4167974 (1979-09-01), Job
patent: 4570720 (1986-02-01), Retzloff
patent: 4580729 (1986-04-01), Pounder
patent: 4623023 (1986-11-01), Retzloff
patent: 4664392 (1987-05-01), Hatch
Upright and Pendent Sprinklers; Model F980 Designer, Bulb Type, 1/2" Orifice; Product Specification TD524.

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