Low preload self-sealing quick release valve for sprinkler head

Details Low preload self-sealing quick release valve for sprinkler head Low preload self-sealing quick release valve for sprinkler head

1985-10-30

1987-03-10

Nase, Jeffrey V.

Fire extinguishers

Sprinkler heads

Collapsible strut

A62C 3714

Patent

active

046484590

ABSTRACT:
Quick release valve for a sprinkler head having a frame adapted to support a thermal responsive actuating element. The quick release valve includes a saddle adapted to contact an end of the actuating element, a bushing having a first surface portion adapted to face the flow passage wall of the frame and a second surface portion adapted to face the saddle, an O-ring for sealing the interface between the flow passage wall and the bushing first surface portion, and another O-ring for sealing the interface between the saddle and the bushing second surface portion. The bushing is axially displaceable within the flow passage. A split retaining ring is insertable in the flow passage to axially displace the bushing so as to exert a compressive preload on the actuating element.

REFERENCES:
patent: 3918645 (1975-11-01), Mohler
patent: 4217961 (1980-08-01), Wotten

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