FLUID END SECTION BLOCK AND VALVE ASSEMBLED BODY

摘要

HIGH PRESSURE FLUID END BLOCK AND VALVE ASSEMBLY A fluid end block and valve assembly for a high pressure reciprocating pump. The assembly comprises a block member having a first passageway therein for operatively accommodating a reciprocating piston, the first passageway being in communication with a suction surface of the block member through a stepped counterbore configuration in the block member, a second passageway in the block member extending transversely from the first passageway to a discharge surface of the block member, a suction manifold removably mounted on the block member at the suction surface, a discharge manifold removably mounted on the block member at the discharge surface, the discharge manifold having a discharge channel to lead fluid being pumped from the second passageway to a discharge passage of the manifold, and having a stepped counterbore configuration in the dis charge channel. The assembly further includes a suction valve assembly removably clamped in position between the suction manifold and the block member, and a discharge valve assembly removably clamped in position between the discharge manifold and the block member, each valve assembly comprising an annular seat member, a valve keeper en gaged with the annular member, a valve plug housed within the assembly, and bias means to bias the valve plug into a closed position. Each annular seat member has a flow channel extending therethrough from a base face at one end to a seat face at the opposed end, and has an annular valve seat. Each valve plug has a seating face to cooperate with the annular valve seat, and has a stem. Each valve keeper has a guide to cooperate with the stem to guide movement of the valve plug, has an opening to promote fluid flow through the keeper, and has a stepped outer configuration provided by a body portion and a radially extending flange extending radially outwardly from the body portion to define a base seat which seats on the seat face of one annular seat member. The stepped outer configuration of each valve keeper is complementary to one stepped counterbore configuration for one valve assembly to be located in the stepped counterbore configuration of the block member and for the other valve assembly to be located in the stepped counterbore configuration of the discharge manifold with the base seat of each keeper being clamped between an annular surface in one counterbore configuration and the seat face of one annular seat member by the clamping action of the manifolds. Sealing means is provided between the block member and the valve assemblies, and between the valve assemblies and the manifolds.