Abstract: Aspects of the disclosure generally relate to positive displacement pumps, and more specifically to fluid end designs for plunger pumps typically used to stimulate oil and natural gas wells underground shale formations by means of hydraulic fracturing (also referred to as fracing or fracking). The fluid end designs include an intersection-less fluid end having an inline discharge and suction valve assembly. The fluid end designs an in-line suction and discharge valve assembly.

Abstract: A bearing support design configured to provide increased resistance to deflection of a crankshaft within a power end. The bearing support design is contoured in the shape of a figure eight and provides an increased surface area for supporting the crankshaft and gearing. The support may be integrally formed in the frame plate of the power end or may alternatively be retrofitted into an existing frame plate and thereby be welded in. The power end having a bearing support at each end of the crankshaft.

Abstract: A bearing support design configured to provide increased resistance to deflection of a crankshaft within a power end. The bearing support design is contoured in the shape of a figure eight and provides an increased surface area for supporting the crankshaft and gearing. The support may be integrally formed in the frame plate of the power end or may alternatively be retrofitted into an existing frame plate and thereby be welded in. The power end having a bearing support at each end of the crankshaft.

Abstract: A dove-tail clamp assembly configured to couple a plunger and a pony rod for operation within a fluid end. The clamp assembly using a flange portion extending from the plunger and the pony rod. A clamp within the clamp assembly engages the flanges in the plunger and the pony rod in a non-threaded relationship to permit the pony rod to induce a reciprocating movement of the plunger within the fluid end. The flange portions may be integrally coupled to the plunger and the pony rod in one embodiment. In another embodiment, the flange portions may be threadedly inserted into existing bores in the plunger and the pony rod. The clamp assembly may include a deflector and an alignment pin.

Abstract: A pump system that has a power end and a fluid end assembly. The fluid end assembly includes a plunger configured to translate within a plunger bore. The fluid end further includes a suction valve assembly and a discharge valve assembly. The power end is configured to use a pony rod to induce movement of the plunger within the fluid end assembly to generate a pressure differential. The suction valve assembly and the discharge assembly operate in response to the pressure differential to move the fluid. A straight valve seal is located within the suction valve assembly and/or the discharge valve assembly to distribute forces incurred by movement of valves within the fluid end assembly.