Fluid handling – Removable valve head and seat unit
Patent
1989-11-01
1990-12-18
Nilson, Robert G.
Fluid handling
Removable valve head and seat unit
1375157, 1375278, F16K 1503
Patent
active
049779249
ABSTRACT:
A swing check valve wherein the valve seat, cage and disc are in the form of a cartridge having an overall length substantially equal to the length of the valve body. The valve is for use between flanges where the flanges do not provide support to prevent movement of the cartridge upstream or downstream. The cartridge is held in place by cooperating shoulders and a member held in mating grooves in the cartridge and valve body by a threaded member.
REFERENCES:
patent: 3933173 (1976-01-01), Kajita
patent: 3937441 (1976-02-01), Baumann
patent: 4201241 (1980-05-01), Schertler
patent: 4313458 (1982-02-01), Burns
patent: 4586534 (1986-05-01), McNeely
patent: 4605041 (1986-08-01), Teumer
Publication, Gray Tool Company, Graycheck, 5-71.
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