Patent ID: 11920444
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 5:
6. A downhole pump, comprising:
a pump barrel;
a standing valve assembly located in the pump barrel; and
a traveling valve assembly located in the pump barrel above the standing valve assembly, the traveling valve assembly comprises a traveling valve housing within which a valve seat is located adjacent to a shouldered lower section of the traveling valve housing, wherein the traveling valve housing comprises an internally threaded upper section that threads onto a plunger of the downhole pump, a traveling valve cage insert is within the traveling valve housing adjacent to the valve seat, and a valve ball is adjacent to the valve seat and within the traveling valve cage insert, wherein the traveling valve cage insert comprises a cylindrical open lower section and an arched open upper section opposite thereto, the arched open upper section comprises three (3) axial arched rails that form an arched dome that operate to stop the valve ball yet permit fluid to be communicated therethrough, wherein an assembly torque of threading the internally threaded upper section to the plunger retains the internal components of the valve cage insert, the valve ball, and the valve seat, wherein a top surface of the traveling valve cage insert is machined to form a metal-to-metal seal with the plunger.