Check valve for rod out

Details Check valve for rod out Check valve for rod out

1981-05-18

1983-07-05

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

7386153, 73756, 1510416, 137244, 1372455, 137315, 137DIG2, B08B 102, F16K 5100

Patent

active

043912893

ABSTRACT:
A ball check valve connects to a duct leading from a process pipe to a flow transmitter, pressure gauge or sampling analyzer. A unique check valve is connected to the distal end of the straight-through duct. A cleaning rod impales a packing gland which is connected onto the check valve when cleaning is initiated. The cleaning rod is inserted through the check valve and into the duct to clean debris without the loss of any fluid while maintaining full process pressure.

REFERENCES:
patent: 543773 (1895-07-01), Massey
patent: 837035 (1906-11-01), Butler
patent: 1069013 (1913-07-01), Hinckley
patent: 1467492 (1923-09-01), Olson
patent: 2068102 (1937-01-01), Gaines
patent: 3893651 (1975-07-01), Uecker
patent: 4070239 (1978-01-01), Bevilacqua
patent: 4076043 (1978-02-01), Rogan
patent: 4192342 (1980-03-01), Adams

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