Fluid handling – Destructible or deformable element controlled – Heat destructible or fusible
Patent
1983-12-05
1985-12-10
Weakley, Harold W.
Fluid handling
Destructible or deformable element controlled
Heat destructible or fusible
137 72, 251174, 251317, 251360, F16K 1304
Patent
active
045572860
ABSTRACT:
A ball valve with an emergency sealing device has a ball having a through hole rotatably mounted within a valve body; ball seat retainers are positioned between the valve body and the ball; ball seats, made of a heat destructible material are mounted on the ball seat retainers and brought into sealing contact with the ball surface, one each to the ball seat retainers; first sealing rings, made of a heat destructible material for functioning under normal conditions are mounted one each on portions of the ball seat retainers where they contact the valve body; annular projection surfaces are provided on each ball seat retainer on parts of the outer circumferences of the ball seat retainers; second sealing rings, made of a heat resistant, flexible material for functioning in case of emergency, are mounted one each on portions of the annular projection surfaces of the ball seat retainers where they contact the inner circumference of the valve body and have pressing mechanisms engaging them, the diameter of the second sealing rings being larger than that of the first sealing rings.
REFERENCES:
patent: 3346234 (1967-10-01), Allen
patent: 4071041 (1978-01-01), Moran
patent: 4280522 (1981-07-01), Pechuyo
patent: 4318420 (1982-03-01), Calvert
Kitz Corporation
Weakley Harold W.
LandOfFree
Ball valve with emergency sealing device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ball valve with emergency sealing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ball valve with emergency sealing device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-53125