Underground tank fill pipe combination

Details Underground tank fill pipe combination Underground tank fill pipe combination

1980-02-06

1982-05-04

Cline, William R.

Fluid handling

Systems

System with plural openings, one a gas vent or access opening

137433, F16K 4500

Patent

active

043277691

ABSTRACT:
A combination of elements for use with an underground tank that has a fill tube which is below ground level and subject to rainwater immersion. It has special application to a fill tube closure that has a small diameter passageway to maintain atmospheric pressure in the fill tube. It includes a float valve to close the passageway if the rainwater rises above a given level adjacent to the top of the fill tube.

REFERENCES:
patent: 395460 (1889-01-01), Sieghold
patent: 2344304 (1944-03-01), Hooper
patent: 3858603 (1975-01-01), Lenz

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