US 4,537,384 AGranted

In-line check valve having combined downstream poppet support and flow control elements

AssigneeBrunswick Corporation

InventorsOscar J. Petersen, Ross J. Barton, Jack E. Dalke, Gerald W. Sheffield, Theodore Towle

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Abstract

A poppet-type check valve utilizing an integral detachable flow control assembly for insertion into a cooperating housing. The checking poppet is oriented with its actuating stem, concentric guide, and concentric force bias spring downstream of the check flow controlled orifice. In a preferred embodiment, the flow control assembly is located internal of a housing having a first flow length adjacent the controlled flow orifice and seat, and a second converging flow length abutting said first flow length, and a terminating flow outlet adjacent the valve outlet port. When mounted internal of the preferred housing, the valve poppet assembly lies partially within the first flow area and extends a predetermined distance into the converging section, thereby greatly reducing turbulence and having a demonstrated reduction in medium flow pressure drop over presently used units.

Claims7

Dependent claims

In an in-line check valve of the type employing an internal seat, and reciprocating spring biased poppet for preventing reverse flow through said seat, and allowing predetermined forward flow, the improvement comprising;

an in-line housing having an internal concentric orifice;
a seat seal circumferentially surrounding and partially embedded in said seat;
an axially aligned poppet having a seal face cooperating with said seat seal for preventing flow therethrough;
a stem on said poppet;
a poppet support extending downstream from said orifice, defining a poppet guide;
means mounting said poppet stem internal said guide for reciprocating motion therein;
means mounting said poppet support in said housing thereby defining a first relief flow passage downstream said seat and a second flow passage extending therefrom, and a fluid containment chamber for poppet flow and check positions, respectively;
said poppet support extending through said first flow passage and into said second flow passage;
a compression spring concentric said poppet guide and intermediate said seal face and guide;
means on said guide and poppet initially compressing said spring and establishing a predetermined poppet/seal force;
wherein upstream pressure on said poppet seal face in excess of a predetermined value, on overcoming said poppet spring bias, translate said poppet downstream, thereby disengaging said poppet and seal, establishing flow through said passage and around said poppet stem guides.

8 more elements

Dependencies are inferred from the claim text.