Butterfly and ball valves

Details Butterfly and ball valves Butterfly and ball valves

1989-06-08

1990-02-06

Fox, John

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251174, F16K 122

Patent

active

048983632

ABSTRACT:
In a fire-safe butterfly valve a polymeric seat ring is resiliently biassed by a resilient metal energizer ring to hold the polymeric seat ring engaged with the closed valve disc, and an independent metal sealing ring permanently engages with the closed valve disc.

REFERENCES:
patent: 3077902 (1963-02-01), Vichery
patent: 3252684 (1966-05-01), Ksieshi
patent: 3841347 (1974-10-01), Kushida
patent: 4491298 (1985-01-01), Beanchamp et al.
patent: 4513765 (1985-04-01), Rishord et al.

Affiliated with

Also associated with

Rating

Butterfly and ball valves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Butterfly and ball valves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Butterfly and ball valves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-437951