Fluid flow control valve with maximized noise reduction

Details Fluid flow control valve with maximized noise reduction Fluid flow control valve with maximized noise reduction

1978-09-29

1983-08-09

Rosenthal, Arnold

Fluid handling

With casing, support, protector or static constructional...

Jacketed

13762538, 1376253, 251127, F16K 4702, F16K 4714

Patent

active

043973310

ABSTRACT:
The valve includes a perforated cage and a perforated closed end tube operating as two sequential stages of restriction and pressure drop for the fluid flowing through the valve. A movable plug cooperates with the cage to control the net amount of flow restriction presented to the fluid, and hence to control the pressure drop across the valve and the rate of fluid flow through the valve. The tube perforations are sized to turn back the practical maximum of the first stage noise into the tube, and the latter is lined with material which absorbs a maximum of the turned-back noise. As a result, the level of the noise passing downstream of the valve is minimized.

REFERENCES:
patent: 3648718 (1972-03-01), Curran
patent: 3802537 (1974-04-01), White
patent: 3894716 (1975-07-01), Barb
patent: 3990475 (1976-11-01), Myers
patent: 4024891 (1977-05-01), Engel et al.
patent: 4040440 (1977-08-01), Zaki
patent: 4103702 (1978-08-01), Duthion et al.
Masoneilan Bulletin No. 370 E SA of Masoneilan International, Inc., Norwood, Mass. dated 5/5/77.

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