Valve for reciprocating pump assembly

A valve member for an inlet or outlet valve of a reciprocating pump assembly, the valve member comprising:

• a valve body defining a first axis and comprising first and second frusto-conical surfaces extending at first and second acute angles, respectively, measured from the first axis in a same angular direction;
• an outside annular cavity formed in the valve body, wherein the outside annular cavity defines first and second angularly-extending surfaces;
• a seal extending within the outside annular cavity, the seal defining a tapered and circumferentially-extending surface adapted to sealingly engage a tapered surface of a valve seat of the inlet or outlet valve;
• an annular groove formed in the valve body at an intersection of the first and second angularly-extending surfaces;
• and
• an annular element disposed in the annular groove and engaging the seal,
• wherein the second frusto-conical surface of the valve body extends angularly between the first frusto-conical surface of the valve body and the tapered and circumferentially-extending surface of the seal.

A valve member for an inlet or outlet valve of a reciprocating pump assembly, the valve member comprising:

• a valve body defining a first axis;
• an outside annular cavity formed in the valve body;
• and
• a seal extending within the outside annular cavity and comprising a first tapered and circumferentially-extending surface adapted to sealingly engage a tapered surface of a valve seat of the inlet or outlet valve, the valve seat defining a second axis with which the first axis of the valve body is adapted to be coaxial;
• a counterbore formed in the valve body along the first axis, the counterbore comprising an enlarged-diameter portion and a reduced-diameter portion, the reduced-diameter portion defining a fluid passage through the valve body, wherein the counterbore defines an internal shoulder in the valve body extending radially between the enlarged-diameter portion and the reduced-diameter portion;
• and
• a rupture disc assembly comprising a rupture disc disposed in the enlarged-diameter portion and engaging the internal shoulder.