A seal assembly for sealing an annular space between a first cylindrical surface and a second cylindrical surface. The annular space has high pressure zones and low pressure zones. The seal assembly has an annular seal with an inner surface that faces the second cylindrical component, an outer surface that faces the first cylindrical component, a sealing end and an engagement end. A seal actuator assembly applies a force to the engagement end of the annular seal to urge the annular seal in a first direction towards an engaged position within the annular space. The force applied to the engagement end of the annular seal has a first component aligned with the first direction and a second component that is perpendicular to the first direction. The first component is at least 1.7 times greater than the second component.

A seal assembly for sealing an annular space between a first cylindrical surface and a second cylindrical surface. The annular space has high pressure zones and low pressure zones. The seal assembly has an annular seal with an inner surface that faces the second cylindrical component, an outer surface that faces the first cylindrical component, a sealing end and an engagement end. A seal actuator assembly applies a force to the engagement end of the annular seal to urge the annular seal in a first direction towards an engaged position within the annular space. The force applied to the engagement end of the annular seal has a first component aligned with the first direction and a second component that is perpendicular to the first direction. The first component is at least 1.7 times greater than the second component.

A fluid routing plug for use with a fluid end section. The fluid end section being one of a plurality of fluid end sections making up a fluid end side of a high pressure pump. The fluid routing plug is installed within a horizontal bore formed in a fluid end section and is configured to route fluid between an intake and discharge bore. The fluid routing plug comprises a plurality of first and second fluid passages. The first and second passages do not intersect and are offset from one another. The first fluid passages are configured to direct fluid delivered to the horizontal bore from intake bores towards a reciprocating plunger. The second fluid passages are configured to direct fluid pressurized by the plunger towards a discharge bore.

A stuffing box assembly for a fluid end of a hydraulic fluid pump includes a stuffing box unit having a plunger bore configured to receive a plunger of the hydraulic fluid pump and a plurality of seals. The plunger bore extends from a first axial end of the stuffing box unit to a second axial end of the stuffing box unit. The plunger bore includes a first portion configured to receive the plurality of seals and a second portion extending between the first portion and the second axial end. The stuffing box assembly further includes a sensor coupled to the stuffing box unit and configured to determine a fluid pressure within the second portion of the stuffing box unit.

A stuffing box assembly for a fluid end of a hydraulic fluid pump includes a stuffing box unit having a plunger bore configured to receive a plunger of the hydraulic fluid pump and a plurality of seals. The plunger bore extends from a first axial end of the stuffing box unit to a second axial end of the stuffing box unit. The plunger bore includes a first portion configured to receive the plurality of seals and a second portion extending between the first portion and the second axial end. The stuffing box assembly further includes a sensor coupled to the stuffing box unit and configured to determine a fluid pressure within the second portion of the stuffing box unit.

A power end assembly includes a crankshaft section, a crosshead section, and a connector section coupled together by one, two, or more sets of stay rods. The power end may include one or more support plates that are coupled to the crankshaft section and/or crosshead section. The crosshead section includes a plurality of individual crosshead frames. The connector section may include a plurality of individual connector plates or may be a unitary connector plate. The power end is configured to be coupled to a fluid end assembly by coupling the fluid end assembly to the connector plates.

A fluid end comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is releasably attached to a connect plate. Each connect plate is attached to a power source using a plurality of stay rods. Each fluid end section comprises a housing in fluid communication with a pair of intake manifolds and a discharge conduit. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing. A plunger is installed within stuffing box attached to each housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear.

A high pressure pump comprising a fluid end mechanically coupled to a power end. The power end is modular and comprises a crankshaft section, a crosshead section, and a connector section coupled together by a first set of stay rods. The fluid end comprises a plurality of fluid end sections positioned in a side-by-side relationship. Each of the plurality of fluid end sections are attached to the power end using a plurality of second set of stay rods.

Various embodiments of the present disclosure are directed to packing rings. In one example embodiment, a packing ring includes a first axial ring end, a second axial ring end, at least three ring segments, and at least one wear opening, The at least one wear opening on at least one of the the at least three ring segments, and extends from a radially outside outer circumferential surface and/or the second axial ring end of the ring segment in the direction of a radially inside inner circumferential surface of the ring segment. A radially inside wear opening end of the at least one wear opening faces toward the inner circumferential surface and is spaced apart in the radial direction of the ring segment from the radially insider inner circumferential surface of the ring segment at a distance which is at most 40% of a radial ring height.

A fluid routing plug for use with a fluid end section. The fluid end section being one of a plurality of fluid end sections making up a fluid end side of a high pressure pump. The fluid routing plug is installed within a horizontal bore formed in a fluid end section and is configured to route fluid between an intake and discharge bore. The fluid routing plug comprises a plurality of first and second fluid passages. The first and second passages do not intersect and are offset from one another. The first fluid passages are configured to direct fluid delivered to the horizontal bore from intake bores towards a reciprocating plunger. The second fluid passages are configured to direct fluid pressurized by the plunger towards a discharge bore.