Abstract: A high pressure valve for a reciprocating pump including improved means of inserting and extracting the seat from the pump in which the pump has a seat deck of truncated conical configuration, the valve having a seat formed of a tubular element having a frusto-conical exterior configuration dimensioned to be received and retained by friction within the valve seat deck, the seat element having integral webs in the lower interior portion supporting a central stem supporting portion and the upper interior portion of the seat element being internally threaded. The seat element can be installed in or removed from a pump by threading into it an external puller head. Extending from the puller head is a puller stem which is externally threaded. To extract the seat from a pump a puller bridge is positioned across the access opening in the pump through which the seat is inserted, the bridge having an opening receiving the puller stem.

Abstract: An improved liquid end for reciprocating pump which has a cylindrical valve chamber communicating with the pump inlet port and the pump outlet port, the valve chamber receiving an intake valve. A lower retainer holding the intake seat in fixed position, an outlet valve, and an upper retainer holding the outlet seat in fixed position and a closure member, all of these elements being slidably positioned in the valve chamber and each of the valves being made in such a way that the valve seat and the valve disc are each reversible, thereby effectively doubling the operating life of the wearing valve components.