Low preload self-sealing quick release valve for sprinkler head
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United States of America Patent
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-
Mar 10, 1987
Grant Date -
N/A
app pub date -
Oct 30, 1985
filing date -
Oct 30, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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