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Suction and discharge valve assemblies for a high pressure reciprocating plunger pump include generally tubular valve seat members insertable in cylindrical bores in a pump fluid end cylinder body and are in sealing engagement with the bores by cooperating o-ring members, respectively. A valve closu

Suction and discharge valve assemblies for a high pressure reciprocating plunger pump include generally tubular valve seat members insertable in cylindrical bores in a pump fluid end cylinder body and are in sealing engagement with the bores by cooperating o-ring members, respectively. A valve closure member has plural guide ribs projecting from a disc portion and insertable in a bore in the valve seat. Closure member guides are disposed in the respective cylinder bores and are formed with a base portion having concavely curved sides and axially extending guide arms.

대표청구항 ▼

A valve assembly adapted to be inserted in a cylindrical valve chamber in a cylinder block of a reciprocating high pressure pump and retained in said chamber by a manifold member removably secured to said cylinder block, said valve chamber having a shoulder formed by said block at the inner end of s

A valve assembly adapted to be inserted in a cylindrical valve chamber in a cylinder block of a reciprocating high pressure pump and retained in said chamber by a manifold member removably secured to said cylinder block, said valve chamber having a shoulder formed by said block at the inner end of said chamber, said valve assembly comprising: an elongated cylindrical tubular valve seat member adapted to be slidably insertable in said chamber and retained in said chamber by said manifold member, said seat member having a bore extending longitudinally therethrough and including a threaded portion for engagement with a disassembly tool to remove said seat member from said valve chamber, and a valve seat surface formed at the inner end of said bore; a valve member including a cylindrical disc portion engageable with said surface on said seat member for closing off fluid flow through said bore, said valve member including a plurality of longitudinal guide ribs projecting from said disc portion and insertable in said bore for guiding said disc portion for reciprocation with respect to said seat member to open and close said valve; a valve guide member including a base portion and a plurality of circumferentially spaced apart arms which extend longitudinally from said base portion and are adapted to engage a transverse end face of said seat member around said disc portion, said base portion including a plurality of concave exterior wall surface portions between said arms and forming recesses to permit the flow of fluid through said chamber from said bore, said base portion extending to engagement with said shoulder in said chamber whereby said guide member is retained in said chamber by being clamped between said shoulder and said seat member, said guide member including a central threaded bore in said base portion for engagement with a disassembly tool to remove said guide member from said bore; and spring means disposed between said base portion and said valve member and adapted to bias said valve member in the valve closed position against said seat member.