Ball valve

Details Ball valve Ball valve

1989-08-22

1990-07-10

Fox, John C.

Valves and valve actuation

Rotary valves

Ball valve

251214, F16K 506

Patent

active

049402080

ABSTRACT:
A ball valve (10) has a ball valve member (34) mounted for floating movement in a valve chamber (32) between an upstream metal seat (102) and a downstream metal seat (104). Each metal seat (102, 104) fits within a recess (100) and has a body portion (110) of a generally uniform thickness adjacent an opposed shoulder (108) with a lip (114) about its inner circumference for sealing against spherical surface (40) of ball valve member (34) at all times. Body portion (110) acts as a Belleville spring and spaces lip (114) from adjacent shoulder (108) at low fluid pressures. A bearing portion (118) has an arcuate seat (120) spaced from spherical surface (40) at low fluid pressures but contacting spherical surface (40) at high fluid pressures. A flexible connector (118) of a relatively thin uniform thickness extends between bearing portion (118) and body portion (110). The stem (36) has a Belleville spring ( 86) exerting a compressive loading against a packing (82) and a thrust bearing (88) is mounted outwardly of the packing (82) between stem shoulder (52) and the outer clamping plate (72).

REFERENCES:
patent: 2981284 (1961-04-01), Putnam
patent: 3576309 (1971-04-01), Zawacki
patent: 4696323 (1987-09-01), Iff
patent: 4745944 (1988-05-01), Francart, Jr.

Affiliated with

Also associated with

Rating

Ball 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 Ball valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ball valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1717206