초록 ▼

A swing check valve wherein the valve seat, disc and hanger for the disc are in the form of a replaceable cartridge which can be conveniently inserted in and removed from the valve chamber through one end of the valve body. The hanger is sized such that the hinge pin of the disc can move a limited d

A swing check valve wherein the valve seat, disc and hanger for the disc are in the form of a replaceable cartridge which can be conveniently inserted in and removed from the valve chamber through one end of the valve body. The hanger is sized such that the hinge pin of the disc can move a limited distance in the hanger toward and away from the valve seat to provide a floating disc. A projection is formed on the disc positioned to engage the valve seat when the disc extends at about 90°from the seat. The seal ring in the valve seat is sized to completely fill its receiving groove and the face of the valve seat is recessed at one side of the groove for distortion of the material of the seal ring therein upon closure of the valve.

대표청구항 ▼

A swing check valve for controlling the flow of fluid through a conduit, comprising: valve body means having a valve chamber therein communicating with the inlet and outlet passageways therein for installation in the conduit with the inlet and outlet passageways communicating with adjacent sections

A swing check valve for controlling the flow of fluid through a conduit, comprising: valve body means having a valve chamber therein communicating with the inlet and outlet passageways therein for installation in the conduit with the inlet and outlet passageways communicating with adjacent sections of the conduit; and a removable valve cartridge in the valve chamber, said cartrige comprising: a substantially round disc having an annular seating face on one side thereof and a hinge pin thereon positioned at least in part radially outward of the disc, the axis of the hinge pin being parallel with the seating face of the disc; and a member forming an annular valve seat extending transversely across the valve chamber having an annular seating face on one side thereof, and an annular cage surrounding a portion of the valve seat seating face having a pair of free ends, each of said free ends forming a bearing area for the hinge pin extending parallel with the longitudinal axis of the valve seat and a shoulder spaced from the valve seat seating face a distance greater than the diameter of the hinge pin, whereby the hinge pin can move a limited distance toward and away from the valve seat seating face between said shoulders and the valve seat seating face, and the valve disc can move a limited distance toward and away from the valve seat seating face along the longitudinal axis of the valve seat with the seating face of the disc parallel with the seating face of the valve seat, the cage guiding the disc in said limited distance movement.