Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve
Patent
1991-11-18
1992-09-29
Walton, George L.
Valves and valve actuation
With means to increase head and seat contact pressure
Seat pressed to valve
251195, 251327, 251328, 277164, 277213, 137375, F16K 302, F16K 3312, F16K 2500
Patent
active
051508818
ABSTRACT:
A sealing sleeve for a gate valve is disclosed which is designed to respond to movements of the gate of the valve in a particular manner. The seal undergoes an axial compressive type movement as the gate is moved between opposed sealing sleeves and this causes a predetermined radially inward buckling of an intermediate wall section of the sealing sleeve. This predetermined buckling creates a spring bias in the sleeve, urging the sleeve to return to the original, less stressed condition. Preferably, the sleeve is of a composite structure and a particular component of the intermediate wall section creates this spring bias. This structure has improved operating characteristics and accommodates a wider range of resilient materials to be used for the sealing sleeve.
REFERENCES:
patent: 250929 (1881-12-01), Lewis
patent: 2243863 (1941-06-01), Hoy
patent: 2303090 (1942-11-01), Pranger et al.
patent: 2471941 (1949-05-01), Downey
patent: 2777664 (1957-01-01), Bryant
patent: 2985422 (1961-05-01), Anderson et al.
patent: 3000608 (1961-09-01), Williams
patent: 3266769 (1966-08-01), Shand
patent: 3333816 (1967-08-01), Williams et al.
patent: 3784214 (1974-01-01), Tampler
patent: 4257447 (1981-03-01), Clarkson
patent: 4685611 (1987-08-01), Scobie et al.
patent: 4688597 (1987-08-01), Clarkson et al.
patent: 4702481 (1987-10-01), Brammer
patent: 4749168 (1988-06-01), Maxwell et al.
patent: 4895181 (1990-01-01), McKavanagh
LandOfFree
Gate valve sleeve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gate valve sleeve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gate valve sleeve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1964411