TRAVELING VALVE CAGE

摘要

A traveling valve for use with a downhole pump includes a cage shell, which at its lower end, has an integral internal shoulder that defines an axial opening. A retaining ring within the cage shell abuts the internal shoulder. An upper end of a bushing is attachable to a plunger while the lower end of the bushing is attached to the cage shell. The bushing and cage shell define a bore in fluid communication with the axial opening. An insert within the bore allows fluid to flow in the bore from below the insert to above the insert. A ball reciprocates in the bore so as to seat on the retaining ring when the fluid pressure within the bore above the ball exceeds the fluid pressure within below the ball, and to be restrained by the insert when the fluid pressure differential within the bore is reversed.

主权项

1. A traveling valve for use with a downhole pump having a plunger, the valve comprising:
(a) a cage shell having a lower end and an upper end, wherein the lower end comprises an internal shoulder defining an axial opening; and (b) a retaining ring disposed within the cage shell and abutting the internal shoulder; (b) a bushing having a lower end adapted to engage the upper end of the cage shell, and an upper end adapted to engage the plunger, wherein the bushing and cage shell together define a bore in fluid communication with the axial opening; (c) a ball disposed within the bore, wherein the ball reciprocates between a position seated against the retaining ring and a position spaced away from the retaining ring; and (d) an insert secured within the bore and around the ball, comprising a ball retaining portion, and defines at least one opening allowing fluid communication from within the insert to the bore above the insert.