Plural component air operated snuff-back dispense valve

Details Plural component air operated snuff-back dispense valve Plural component air operated snuff-back dispense valve

1992-04-30

1993-10-26

Schwadron, Martin P.

Valves and valve actuation

Reciprocating valve

Push or pull operator

222571, F16K 2300

Patent

active

052558924

ABSTRACT:
A hardened needle and seat are provided in a dispense valve wherein the seat is spring loaded such that when the needle is pulled back against the seat, the seat moves away from the dispense opening causing a "snuff back" effect. Hardened seats and needles are utilized to provide long life and one or more components may be run using the same general valve mechanism at predetermined ratios.

REFERENCES:
patent: 1565686 (1925-12-01), Titus
patent: 2721008 (1955-10-01), Morgan, Jr.
patent: 2839226 (1958-06-01), Ross
patent: 3806084 (1974-04-01), Seese
patent: 3895748 (1975-07-01), Klingenberg
patent: 4083474 (1978-04-01), Waite et al.
patent: 4142707 (1979-03-01), Bjorklund
patent: 4394945 (1983-07-01), Taylor, Jr.
patent: 4516702 (1985-05-01), Schmidt
patent: 5065910 (1991-11-01), Fiedler

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