Low noise valve

Details Low noise valve Low noise valve

F - Mech Eng,Light,Heat,Weapons

16

K

137/137

F16K 47/04 (2006.01)

Patent

CA 1248843

-19- LOW NOISE VALVE Abstract of the Disclosure 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.

480811

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