Patent ID: 8337180

Claim:
A fluid section for a reciprocating pump, comprising: a cylinder assembly comprising: a housing having a central axis, a first end, a second end opposite the first end, a throughbore extending axially between the first end and the second end, and a radially inner surface including a plurality of circumferentially spaced lugs proximal the first end of the housing; a liner disposed within the throughbore of the housing, wherein the liner has a first end proximal the first end of the housing, a second end proximal the second end of the housing, a throughbore extending between the first end and the second end of the liner, and an outer cylindrical surface that slidingly engages the lugs; an end cap coupled to the second end of the housing, wherein the end cap is adapted to retain the liner within the housing; and an annulus radially positioned between the liner and the housing, wherein the annulus is in fluid communication with the throughbore of the liner; a piston slidingly disposed in the throughbore of the liner, wherein the piston is adapted to compress a fluid disposed in a pumping chamber within the liner, the pumping chamber extending axially through the throughbore of the liner between the piston and the first end of the housing.