초록 ▼

The invention contemplates a particular body construction and assembly for a check valve or the like whereby the entire valve assembly may be readily installed as a unit within the bore of standard pipe or conduit, or a standard fitting therefor. A single circumferentially extending radially inwardl

The invention contemplates a particular body construction and assembly for a check valve or the like whereby the entire valve assembly may be readily installed as a unit within the bore of standard pipe or conduit, or a standard fitting therefor. A single circumferentially extending radially inwardly open groove in the bore of the pipe, conduit or fitting, faces a corresponding radially outwardly open groove in the valve body, and stiffly compliant circumferentially extensive retainer element such as a wire of suitable gage substantially fills these grooves to retain the inserted valve in place. The retainer element is adapted for ready removability, to enable servicing or removal of the inserted valve, and the valve body is so externally characterized as to unambiguously assure valve installation in the correct direction of desired flow.

대표청구항 ▼

In combination, first means of conducting fluid flow and including a circular bore at an open end thereof, said bore having a circumferentially continuous annular groove therein at a location axially offset from said open end, and an insert valve removably seated in said bore; said insert valve comp

In combination, first means of conducting fluid flow and including a circular bore at an open end thereof, said bore having a circumferentially continuous annular groove therein at a location axially offset from said open end, and an insert valve removably seated in said bore; said insert valve comprising an annular body with a cylindrical outer surface sized for support in said bore in axial overlap with said groove, an externally open circumferential groove in said body and having sectional proportions substantially matching but radially opposed to those of the bore groove, one end of said body being locally recessed to an axial extent which includes said body groove, the angular limits of said recess being less than the remaining circumferential extent of said body groove, and a stiffly compliant circumferentially extensive retainer element substantially filling one of said grooves, and at least partially filling the other of said grooves, said retainer element being removably insertable via said recess into the annular volume defined by and between said grooves when in axial registry.