초록 ▼

The invention provides a two-part casing for a multistage valve, itself configured for noise-reduction. Further noise reduction is achieved by complaint suspension of the valve in a two-part casing wherein separable parts of the casing define a cavity for containing nested stages of the valve. Provi

The invention provides a two-part casing for a multistage valve, itself configured for noise-reduction. Further noise reduction is achieved by complaint suspension of the valve in a two-part casing wherein separable parts of the casing define a cavity for containing nested stages of the valve. Provision is made for selective adjustment of compressional loading of the compliant suspension.

대표청구항 ▼

Noise-reducing valve structure, comprising a cylindrical body of nested tubular body members, said tubular members collectively defining spaced radial end walls when in nested array, a poppet member guided by the bore of the inner one of said tubular body members, said body members having plural gen

Noise-reducing valve structure, comprising a cylindrical body of nested tubular body members, said tubular members collectively defining spaced radial end walls when in nested array, a poppet member guided by the bore of the inner one of said tubular body members, said body members having plural generally radial passages and circumferential manifold groove formations at interface regions between body members, a valve casing comprising separable parts defining a cylindrical cavity containing the nested array of tubular members, said cavity having radial clearance via a portion of said manifold surface, the radial passages and manifold-groove formations of said body members extending over an axial range which is short of each axial end, the radially adjacent axial end portions of said body members being cylindrical and circumferentially continuous, whereby a pair of radially confronting land surfaces exists at each axial end of radially adjacent body members, one of the cylindrical land surfaces of each said pair having a circumferentially continuous groove formation, and an elastomeric O-ring in each of said grooves and establishing a circumferentially continuous seal between the cylindrical land surfaces of each pair.