US Patent 10989188 Oil field pumps with reduced maintenance

A valve module comprising: a cylindrical canister containing a valve assembly for a high pressure pump, wherein the valve assembly comprises a valve body and a valve seat, wherein the valve module provides a fluid flow path from an inlet to an outlet of the valve module from one side of the valve seat along a central axis of the valve module to the other side of the valve seat along the central axis and between the valve body and the valve seat when the valve assembly is in an open configuration, and does not provide the fluid flow path when the valve assembly is in a closed configuration.