High pressure gas valve having an inverted stem/seat design and

Details High pressure gas valve having an inverted stem/seat design and High pressure gas valve having an inverted stem/seat design and

1997-09-19

1999-12-28

Chambers, A. Michael

Valves and valve actuation

Valve

Materials

251144, 251223, 251357, F16K 5100

Patent

active

060070498

ABSTRACT:
An improved shutoff valve has an inverted stem/seat design with a removable cartridge including a stem designed to include a high performance polymer tip for use with a compressed fluid cylinder. The high performance polymer tip reduces the likelihood of damage to the valve seating area of the shutoff valve. The removable cartridge with the high performance polymer tip thereon makes replacement quick and easy should the soft tip become damaged. The inverted stem/seat design positions the stem and high performance polymer tip such that the pressurized gas acts in unison with the threaded stem tip in seating the stem rather than acting against the stem.

REFERENCES:
patent: 3137476 (1964-06-01), Rotheraine
patent: 3744526 (1973-07-01), MacNiel
patent: 3933337 (1976-01-01), Morris et al.
patent: 4525910 (1985-07-01), Boehmer
patent: 5386965 (1995-02-01), Marchal
patent: 5435348 (1995-07-01), Nakamura et al.

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