Abstract: A quick-connector assembly for joining abutting flanged ends of two tubular members includes first and second connector portions joined by a rotatable hinge having a hinge pin coupling the first connector portion and the second connector portion so that the first and second connector portions encircle about abutting flanged ends of the tubular members when the first and second connector portions are in a closed position. Further, a stand having a bracket with at least one hole for accommodating the hinge pin is designed to at least partially support the weight of the connector assembly and the flanged ends of the tubular members.

Abstract: An end fitting assembly, configured to be secured to a flexible hose between a frac pump and a large bore manifold, includes a connection coupling portion including an annular flange at a first end, a connector interface at a second end, and a neck portion between the annular flange and the connector interface, wherein the annular flange includes a first axial face including a groove recessed into the first axial face, a face seal disposed in the groove, and a flexible hose coupling portion including an enlarged first end and a second end, wherein the enlarged first end includes a second axial face with a flat sealing region, and wherein coupling the enlarged first end to the annular flange brings the flat sealing region of the second axial face into sealing contact with the face seal disposed in the groove of the first axial face.

Abstract: A system is provided that comprises an inlet fluid conduit, an outer frame, and an inner frame coupled to the outer frame via at least one mass measurement device, where the inner frame includes an opening. A bi-directional scale is pivotally connected to the inner frame along an axis of rotation, where the bi-directional scale comprises filter media positioned between a first material receiving receptable and a second material receiving receptable. The first material receiving receptacle is configured to receive a fluid mixture from the inlet fluid conduit. The system comprises a separator pivoting system coupled to the bi-directional scale. The separator pivoting system is configured to: rotate the bi-directional scale about the axis of rotation, wherein following rotation of the bi-directional scale, the second material receiving receptacle is positioned to receive the fluid mixture from the inlet fluid conduit.

Abstract: A keyless timing gear assembly for securing a bull gear to a crankshaft of a power end of a reciprocating pump assembly, the keyless timing gear assembly including at least one actuator, an expansion member and at least one wedge member disposed between the at least one actuator and the expansion member, the wedge member having a sloped surface to slideably engage a corresponding sloped surface on the expansion member such that, in response to actuation of the at least one actuator, the at least one wedge member exerts a force on the expansion member for securing a bull gear to a crankshaft.

Abstract: An arrangement for supporting one or more bearings of a crankshaft assembly of a hydraulic fracturing pump includes a frame and one or more bearing supports. The frame is of a first material and defines one or more bearing support profiles. The bearing supports are of a second material different from the first material of the frame. The bearing supports are cast-in-place within the corresponding bearing support profiles of the frame and are configured to be in contact with an outer race of the corresponding bearings of the crankshaft assembly. Compared to the first material of the frame, the second material of the bearing supports is more effective at preventing slippage of the bearings.

Abstract: A valve assembly for a wellhead includes a channel extending between a first end and a second end; a valve having a valve closed position in which the channel is blocked and a valve open position in which the channel is unblocked; and a flap arrangement having a flap closed position. The flap arrangement is configured to: displace from the flap closed position in an event of obstruction of the channel; and return to the flap closed position on removal of obstruction from the channel. The valve assembly further comprises a sensor, configured to determine an indication of obstruction of the channel by determining whether the flap arrangement is in the flap closed position.

Abstract: A fluid pump may include a power end, a fluid end having a cartridge bore, and a valve cartridge configured for insertion into, and removal from, the cartridge bore as a unit. The valve cartridge may include a cartridge body having a fluid inlet and a fluid outlet, a first valve assembly configured to control fluid flow through the fluid inlet, and a second valve assembly configured to control fluid flow through the fluid outlet.

Abstract: A flexible hose end fitting assembly includes a first portion defining a first fluid passageway and having a first end configured for coupling to a fluid conduit, a second portion defining a second fluid passageway and having a first end configured for coupling to a second end of the first portion and a second end configured for securely affixed to a flexible hose. A gasket is disposed in a groove formed in an interface between the first portion and the first end of the second portion of the assembly, and the first portion and the first end of the second portion of the assembly are securely fastened together by a plurality of threaded fasteners to form a continuous fluid passageway between the fluid conduit and the flexible hose.

Abstract: A swivel assembly for oilfield operations, the swivel assembly including a first pipe section having a first end fitting and a second pipe section having a second end fitting corresponding to and receiving the first end fitting, each of the first and second end fittings having an inner surface and an outer surface. The swivel assembly further includes a swivel joint rotatably securing, via the corresponding first and second end fittings, the first and second pipe sections together along a central axis to define a fluid passageway therethrough. At least a portion of one of the first pipe section and the second pipe section is formed of a corrosion-resistant material having a first hardness and at least a portion of the swivel joint is formed having a second hardness different from the first hardness.

Abstract: In some implementations, a check valve may include a hanger configured in a valve body in a position that is approximately parallel to a direction of flow, wherein the hanger includes a first mating surface on a bottom face of the hanger. The check valve may include a clapper rotatably connected to the hanger, wherein the clapper is configured to rotate between a closed position and an open position, wherein the clapper includes a second mating surface on a top face of the clapper, and wherein the first mating surface and the second mating surface are configured to form a mated interface when the clapper is in the open position.

Abstract: An intermittent flushing plunger packing assembly is described herein. The packing assembly includes a plurality of annular seals disposed about the plunger configured to reciprocate along a linear axis within the fluid bore of the pump, and an annular packing nut disposed circumferentially about the plunger and configured to retain the plurality of annular seals and adjust a combined height of the plurality of annular seals. A selected one of the plurality of annular seals proximate to the fluid cylinder of the pump has a flushing fluid chamber in fluid communication with a flushing fluid port coupled to a first one-way check valve allowing a pressurized flushing fluid to be introduced and retained within the flushing fluid chamber and creating a fluid barrier to prevent frac fluid in the fluid cylinder from bypassing the annular seals.

Abstract: A valve cartridge for a fluid end for a well stimulation pump is discussed and illustrated. The valve cartridge optionally includes: a valve body, a spring engaging the valve body on a first side thereof, and a housing at least partially enclosing the valve body and spring. The housing can define one or more passages therethrough. The housing can define one or more seats adjacent the one or more passages. The one or more seats can be configured to be selectively engaged by the valve body on a second side thereof.

Abstract: A system and method for providing one or more pressurized fluid barriers for a fluid end of a reciprocating pump can comprise energization of, using a clean fluid, one or more components provided at distinct different locations of the reciprocating pump to a pressure greater than a cyclical pressure of the reciprocating pump associated with operation of the reciprocating pump to output fracking fluid.

Abstract: A dart valve comprises a valve housing. The valve housing comprises a valve inlet, a valve outlet, a housing wall and an aperture extending through the housing wall between the valve inlet and valve outlet. The dart valve further comprises a valve cartridge. The valve cartridge comprises a cartridge housing configured to allow fluid to flow therethrough from a cartridge inlet to a cartridge outlet; and a valve plunger slidably mounted in the cartridge housing and configured to selectively allow fluid to flow from the cartridge inlet to the cartridge outlet. The valve cartridge is configured to be inserted through the aperture for removably mounting the valve cartridge within the valve housing, in a mounted position, such that the valve inlet is in communication with the cartridge inlet, the cartridge outlet is in communication with the valve outlet and fluid is able to flow from the valve inlet to the valve outlet through the valve cartridge.

Abstract: A fluid pump may include a fluid chamber, a plunger configured to reciprocate within the fluid chamber, and a valve system including multiple valves. The multiple valves each may be configured to control fluid flow into the fluid chamber or each may be configured to control fluid flow out from the fluid chamber.

Abstract: An arrangement for supporting one or more bearings of a crankshaft assembly of a hydraulic fracturing pump includes a frame and one or more bearing supports. The frame is of a first material and defines one or more bearing support profiles. The bearing supports are of a second material different from the first material of the frame. The bearing supports are cast-in-place within the corresponding bearing support profiles of the frame and are configured to be in contact with an outer race of the corresponding bearings of the crankshaft assembly. Compared to the first material of the frame, the second material of the bearing supports is more effective at preventing slippage of the bearings.

Abstract: A valve assembly and system, method, and apparatus thereof can comprise a valve body having a side surface and a valve body contact surface; a ring surrounding the valve body such that an inner surface of the ring is slidably engaged with the side surface of the valve body; and a retainer at an upper surface of the ring and movable with the ring relative to the valve body such that the retainer moves with the ring as the ring slides along the side surface of the valve body.

Abstract: A valve assembly and system, method, and apparatus thereof can comprise a valve body having a side surface and a valve body contact surface; a ring surrounding the valve body such that an inner surface of the ring is slidably engaged with the side surface of the valve body; and a retainer at an upper surface of the ring and movable with the ring relative to the valve body such that the retainer moves with the ring as the ring slides along the side surface of the valve body.

Abstract: A fluid system may include a first fluid path including a blender configured to mix fluid with proppant. The fluid system may include a second fluid path, fluidly isolated from the blender, including a pump. The fluid system may include a mixing pump configured to receive first fluid containing proppant from the first fluid path and second fluid free of proppant from the second fluid path. The mixing pump may include a cylinder defining a bore. The mixing pump may include a first intake valve configured to control flow of the first fluid, a second intake valve configured to control flow of the second fluid, and an outlet valve configured to control flow of a mixture of the first fluid and the second fluid.

Abstract: A wear-resistant hydraulic fracturing pump valve seat including a body of the valve seat extending radially away from a central axis. The valve seat includes a first top surface configured to form a metal seal with a first bottom surface of a valve head, the first bottom surface positioned closest to a base of the valve head. The valve seat further includes a valve seat step positioned directly adjacent and above the first top surface and a second top surface disposed directly adjacent to and above the valve seat step. The second top surface is configured to form a second metal seal with a second bottom surface of the valve head. The valve seat step is configured to place the first top surface and the second top surface in different parallel planes from each other.