Line test isolation plug

Details Line test isolation plug Line test isolation plug

1987-10-26

1989-04-18

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

138 90, G01M 328

Patent

active

048215597

ABSTRACT:
An insolation plug suitable for leakage testing a liquid conduit has an O-ring seal mounted adjacent one end of its body to mate with a sleeve in a pump fitting for the conduit when the plug is inserted in the fitting through a threaded hole. This seals off the outlet of the fitting from its remaining portions. The plug contains a bore through which the liquid in the conduit may be pressurized for testing purposes. An additional base in the isolation plug communicates with the portions of the fitting upstream of the seal to permit liquid to be discharged from the tank through the additional bore.

REFERENCES:
patent: 2564402 (1951-08-01), MacArthur
patent: 2952387 (1960-09-01), Fowler et al.
patent: 2952388 (1960-09-01), Deters
patent: 2979939 (1961-04-01), Shuh
patent: 3183723 (1965-05-01), Deters
patent: 3261201 (1966-07-01), Pottash
patent: 3273753 (1966-09-01), Johnson et al.
patent: 3439837 (1969-04-01), Hearn et al.
patent: 3454195 (1969-07-01), Deters
patent: 3910102 (1975-10-01), McLean
patent: 3940020 (1976-02-01), McCrory et al.
patent: 4679587 (1987-07-01), Jarr

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