Low noise level control valve

Details Low noise level control valve Low noise level control valve

1977-12-16

1979-12-25

Rosenthal, Arnold

Valves and valve actuation

With material guide or restrictor

Baffle or zigzag flow restrictor

251282, 251333, F16K 4702, F16K 2500

Patent

active

041802403

ABSTRACT:
A low noise level valve for controlling high pressure fluid flow between an inlet and an outlet. The valve comprises a poppet movable along a given line with respect to a complementarily formed valve seat. The area between the poppet and valve seat comprises a series of spaced undulations which extend along a continuous curve of approximately 90.degree.. The undulations are disposed substantially parallel to the direction of poppet movement adjacent to the inlet and are substantially transverse adjacent to the outlet. The undulations define a plurality of orifices which are opened progressively from the outlet toward the inlet. The orifices act as pressure drops and also cause turbulence as fluid flows around the undulations, thereby holding the fluid flow below undesirable speed and noise levels. A balancing chamber may be provided to counter-balance the poppet movement. Sealing means may be provided by an undercut lip formed on a sealing member adjacent to the inlet.

REFERENCES:
patent: 1645601 (1927-10-01), Lee
patent: 2114858 (1938-04-01), Rosch
patent: 2181059 (1939-11-01), Lee
patent: 2489623 (1949-11-01), Delany
patent: 3945390 (1976-03-01), Huber

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