Piston and cylinder actuated polymer mixing valve

Details Piston and cylinder actuated polymer mixing valve Piston and cylinder actuated polymer mixing valve

1998-04-20

1999-07-20

Hepperle, Stephen M.

Fluid handling

Systems

Multiple inlet with single outlet

251 58, G05D 1103

Patent

active

059244534

ABSTRACT:
A valve for introducing polymer into a moving water stream prior to flowing he water stream, with the polymer therein, onto a hull surface of an underwater vehicle. The valve comprises a venturi block having therethrough a venturi passageway for flowing water therethrough, a polymer inlet tube extending through the venturi block and into the venturi passageway for introducing the polymer into the water flowing through the venturi passageway. A shut-off plunger extends through a bore in the venturi block and is axially aligned with the polymer inlet tube, the plunger being reciprocally movable in the bore between a first position in which a head portion of the plunger extends into and seals closed the polymer inlet tube, and a second position in which the head portion of the plunger is spaced from sealing engagement with said polymer inlet tube. A piston and cylinder assembly moves the plunger between the first and second positions.

REFERENCES:
patent: 2953344 (1960-09-01), Yancey
patent: 4185054 (1980-01-01), Nakamura et al.
patent: 5207148 (1993-05-01), Anderson et al.
patent: 5509349 (1996-04-01), Anderson et al.
patent: 5758691 (1998-06-01), Nedderman, Jr.

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