Accession Number : ADD018682

Title :   Reduced Noise Disk Valve Assembly

Descriptive Note : Patent, Filed 28 Apr 96, patented 29 Jul 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lieb, George W

Report Date : 29 Jul 1997

Pagination or Media Count : 6

Abstract : A noise and shock reducing assembly are provided. When used as part of a disk valve assembly, the present invention includes a disk and a valve plate with a valve orifice passing therethrough. A perforated bellows is disposed about the valve orifice between the disk and the valve plate. An actuator moves the disk linearly with respect to the valve plate in one of a first direction and a second direction to cause compression or expansion of the bellows. The restrictive flow path presented by a combination of the folded side walls of the bellows and the perforations therein provide for a gradual increase or decrease in downstream pressure and flow during the opening or closing of the valve.

Descriptors :   *QUIET, *PATENTS, *HYDRAULIC VALVES, FLOW FIELDS, PRESSURE, EXPANSION, ACTUATORS, DISKS, FLOW NOISE, ASSEMBLY, ORIFICES, PERFORATION, BELLOWS

Subject Categories : Pumps, Filters, Pipes, Tubing, Fittings & Vlvs
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE