Low noise valve

Details Low noise valve Low noise valve

1984-05-07

1985-10-29

Scott, Samuel

Valves and valve actuation

With material guide or restrictor

Movable or resilient guide or restrictor

251123, 1376253, F16K 4704

Patent

active

045497184

ABSTRACT:
A low-noise valve has a body with a fluid inlet to receive pressurized fluid, an outlet and a fluid passageway extending between the inlet and outlet. Located in the passageway are a number of spaced throats. The valve also includes a movable stem with a number of plugs each adapted to be closely received by a corresponding throat. Each plug includes a plurality of circumferential alternating grooves and lands, the lands being closely spaced within the throats to create a plurality of flow restrictions each incrementally restricting fluid flow when the stem is at a minimum flow position. Movement of the stem toward a full open position sequentially removes the lands from the throat to reduce restriction of such fluid flow in stages.

REFERENCES:
patent: 3059894 (1962-10-01), Knecht et al.
patent: 3252480 (1966-05-01), Odendahl et al.
patent: 3485474 (1969-12-01), Baumann
patent: 3715098 (1973-02-01), Baumann
patent: 3730479 (1973-05-01), Baumann
patent: 3880399 (1975-04-01), Luthe
patent: 3948479 (1976-04-01), Bedo et al.
patent: 4044834 (1977-08-01), Perkins
patent: 4363464 (1982-12-01), Spils

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