Tank blanketing valve

Details Tank blanketing valve Tank blanketing valve

1995-08-21

1997-08-26

Hepperle, S.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

1374545, 13762527, 13762533, 13762566, 137907, F16K 1710

Patent

active

056602049

ABSTRACT:
An improved valve is provided for blanketing and maintaining the vapor space of a tank with inert gas at a set pressure. The valve is of the type that incorporates a pilot valve that operates in response to sensed tank vapor space gas pressure. The opening and closing of the pilot valve controls the opening and closing of an associated main valve which admits pressurized inert gas into the tank from an inert gas supply to maintain the tank set pressure. The valve permits one to externally adjust internal components of the pilot valve after valve assembly. Also, the valve provides for pressure balanced operation that achieves a consistent opening pressure over the allowable range of inlet gas supply pressures.

REFERENCES:
patent: 2342763 (1944-02-01), Smith
patent: 3028878 (1962-04-01), Natho
patent: 3977438 (1976-08-01), Muchow et al.
patent: 4172466 (1979-10-01), Pattarini et al.
patent: 4609008 (1986-09-01), Anderson, Jr et al.
patent: 4802505 (1989-02-01), Gemignani et al.
patent: 4972870 (1990-11-01), Changnian et al.
patent: 4991620 (1991-02-01), Ligh
patent: 5067522 (1991-11-01), Ligh
patent: 5072749 (1991-12-01), Ligh
patent: 5094267 (1992-03-01), Ligh

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