Fluid handling – Destructible or deformable element controlled – Heat destructible or fusible
Patent
1979-08-02
1981-06-09
Schwadron, Martin P.
Fluid handling
Destructible or deformable element controlled
Heat destructible or fusible
137 75, 251 636, 251330, F16K 1300
Patent
active
042718570
ABSTRACT:
A fire safe valve having a valve body with a flow passage therethrough and a valve chamber intersecting the flow passage a valve closure member having a stem and being slidable in the valve chamber to open or close flow through the flow passage, a shoulder on the stem, a bonnet connected to the body, said bonnet having a bore through which the stem extends, a seat surrounding the stem and adapted to be engaged by the stem shoulder on backseating, means sealing between the stem and the bonnet bore outward of said seat, an actuator connected to move said stem and said valve closure member, a sleeve surrounding a portion of the stem, fusible material supporting the sleeve in a normal stop position to limit the outward movement of the stem to prevent backseating, melting of the fusible material allowing the sleeve and stem to move so that the stem backseats, and means associated with said sleeve to control the actuator whereby on movement of the sleeve the valve closure member is moved to closed position.
REFERENCES:
patent: 2647721 (1953-08-01), Volpin
patent: 3177887 (1965-04-01), Priese
patent: 3659624 (1972-05-01), Kelley et al.
patent: 3771540 (1973-11-01), Wicke
patent: 3788600 (1974-01-01), Allen
patent: 3838705 (1974-10-01), Diehl et al.
patent: 3842853 (1974-10-01), Kelley et al.
patent: 3896835 (1975-07-01), Wicke
patent: 4214600 (1980-07-01), Williams, Jr. et al.
Cameron Iron Works, Inc.
Schwadron Martin P.
Walton G. L.
LandOfFree
Fire safe valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fire safe valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire safe valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1258550