Flapper valve

Details Flapper valve Flapper valve

1987-11-09

1989-10-03

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

1375276, 1375278, 422114, 422144, F27B 1502, F27B 1509

Patent

active

048715140

ABSTRACT:
A flapper valve for sealing the cyclone diplegs on a fluid catalytic cracking unit has conical sealing surfaces provided between the movable valve body and the valve seat on the bottom of the cyclone dipleg. In addition, a retaining ring around the movable valve body retains catalyst on the valve body when the valve is in its horizontal, closed position to improve sealing.

REFERENCES:
patent: 197838 (1877-12-01), Downey
patent: 2187487 (1940-01-01), Burt
patent: 2259128 (1941-10-01), Egan
patent: 2694358 (1954-11-01), Taylor
patent: 2838062 (1958-06-01), Held et al.
patent: 2838063 (1958-06-01), Weits et al.
patent: 2838065 (1958-06-01), Held et al.
patent: 2901331 (1959-08-01), Held et al.
patent: 3140724 (1964-07-01), Dietert et al.
patent: 3213879 (1965-10-01), Thompson
patent: 3273320 (1966-09-01), Delaune et al.
patent: 3613720 (1971-10-01), Welch
patent: 3785962 (1974-01-01), Conner et al.
patent: 4074691 (1978-02-01), Luckenbach
patent: 4246231 (1981-01-01), Figler et al.
patent: 4396034 (1983-02-01), Cherniak
patent: 4407325 (1983-10-01), Cherniak
patent: 4446107 (1984-05-01), Buyan et al.
patent: 4477053 (1984-10-01), Jandrasi
patent: 4701307 (1987-10-01), Walters et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-662724