Abstract: Frac pumps have liners for a suction manifold that is adapted to provide fluid to a plurality of intake ports of a multi-unit reciprocating pump. The liners comprise a compressible, resilient body. The compressible, resilient body is carried within the suction manifold. When installed in the suction manifold, the body defines a channel extending through the manifold that is adapted to convey fluid from an inlet of the suction manifold to the intake ports of the pump units. The cross-sectional area of the channel diminishes along the direction of flow through the channel.

Abstract: Frac pumps have valve bodies. The valve bodies comprise a head and a compressible seal. The head provides a valve surface adapted to engage the valve seat. The compressible seal is carried on the head radially inward of the valve surface and is adapted to engage the valve seat. It is mounted between the head and a valve guide having a plurality of legs. The face of the compressible seal has a slightly curved, convex sealing surface.

Abstract: Disclosed herein is a check valve. The check valve includes a valve housing having upper and lower ends opened and having an inlet formed along the circumference of the valve housing, the inlet linked to a inlet fluid path, an upper cap coupled to seal up an open upper portion of the valve housing, a lower holder coupled to an open lower portion of the valve housing, having an outlet formed along the circumference of the lower holder, the outlet linked to a outlet fluid path, and having a guide hole in the lower portion of the lower holder, and a plunger installed to move up or down to selectively open or close an orifice while elastically supported by an elastic member supported by the lower holder, wherein the plunger comprises guides at upper and lower ends of the plunger to guide the plunger to make stable linear motion.

Abstract: A device for controlling flow of a flow agent in a pipe system, the device comprising: a pipe housing (1) comprising a pipe cavity (2) with one or multiple openings in a pipe cavity wall of the pipe cavity, the one or multiple openings defining an outlet port (3) of the device, and the pipe cavity having an open end defining an inlet port (6) of the device, and a closed end (7), wherein the closed end is closed by a dismountable end body (15); the pipe cavity comprising a first portion having a first cross sectional area and a second portion having a reduced cross sectional area (4), smaller than the first cross-sectional area, the second portion being located between the open end and the one or multiple openings in the pipe cavity wall.

Abstract: Disclosed herein is a check valve. The check valve installed in a bore of a modulator block having an inlet path and an outlet path and configured to control oil to flow in one direction, the check valve comprising: a valve housing installed in the bore, including an inlet and an outlet configured to respectively communicate with the inlet path and the outlet path, and having an open upper portion; a cap member configured to seal the open upper portion of the valve housing and fixed to the modulator block; a plunger provided to move forward or backward in the valve housing and configured to open or close an internal path between the inlet and the outlet; and a spring provided between the cap member and the plunger and configured to press the plunger to close the internal path.

Abstract: A modular valve cartridge for a regenerative air dryer including a housing having a dry air passage and a desiccant canister having a desiccant bed. The modular valve cartridge includes a cylindrical body having an air passage extending axially there through between a first opening and second opening, a first end of the cylindrical body, including the first opening, to releasably couple to the housing to place the cartridge air passage in communication with the dry air passage via the first opening, and a second end of the cylindrical body, including the second opening, to releasably couple to the desiccant canister to place the cartridge air passage in communication with the desiccant bed via the second opening. A check valve is disposed within the cartridge air passage, the check valve biased to be in a normally closed position to close the cartridge air passage and to open the cartridge air passage in response to receiving a pressurized air via the second opening.

Abstract: A throttling device comprising: a body having an inner surface and an outer surface, the inner surface defining a body cavity, the inner surface and the outer surface defining a plurality of body orifices in fluid communication through the body cavity; a throttle movably positioned within the body cavity proximate to a first orifice of the plurality of body orifices, the throttle movable to a closed position closing the first orifice and to an open position opening a fluid pathway between the first orifice and the body cavity; and a biasing element biasing the throttle to a partially-open position between the closed position and the open position.

Abstract: A check valve (100) that opens and closes by causing a valve element (112) to come into contact with and separate from a valve seat (104) and thereby controls a flow of fluid that flows in through an inlet (101) and flows out through an outlet (102). The check valve (100) has: the inlet (101) provided at a downside thereof; the outlet (102) provided at an upside thereof; the valve seat (104) formed to surround the inlet (101); the valve element (112) configured to be able to come into contact with and separate from the valve seat (104) vertically; and a guide portion (105) that has a fluid guide surface (118) horizontally guiding a fluid flowing in through the inlet (101), and a valve element guide surface (111) provided on a side surface thereof, the valve element guide surface (111) vertically guiding the valve element.

Abstract: Apparatuses regulate the flow of fluids, such as, for example, water or other like fluids, through pipes. The apparatuses comprise a poppet valve having a spheroid-shaped valve portion and one or more shims for adjusting effective spring length during use thereof. Specifically and without being bound by theory, the apparatuses of the present invention creates a backward pressure in fluid traversing a pipe, wherein the backward pressure within the pipe provides compression to the fluid effectively compressing entrapped gas bubbles within the fluid, allowing more accurate water meter measurements. Moreover, the apparatuses of the present invention provide backflow prevention. Systems and methods for regulating the flow of fluids within a pipe are further provided.

Abstract: The present subject matter relates to check valve apparatuses and methods. In particular, the present subject matter relates to a flow control device that can be incorporated into a check valve. The flow control device can include a valve seat configured for positioning within an inlet of a check valve, the valve seat defining an opening, a plurality of flow routing vanes at least partially traversing the opening, and a disk movable between a first position and a second position in response to a fluid pressure. When the disk is in the first position, the disk blocks the opening of the valve seat, and when the disk is in the second position, the opening is substantially unobstructed. The flow routing vanes can function to smooth the flow of fluid into the valve, thereby reducing pressure drop, noise, erosion, corrosion, vibration, and cavitations.

Abstract: A method of installing an axially adjustable driveshaft assembly in a drive train system is described. Two hollow driveshaft sections, where one has a valve through an aperture in it and each has an end fitting, engage each other to form an axially adjustable driveshaft assembly that has a sealed internal chamber within. When a pressurized air or vacuum source is connected to the valve, air fills the chamber or air is removed from the chamber, which correspondingly increases or decreases a drive train system length. This results in facilitating the installation of the driveshaft assembly between a transmission and an axle assembly in a drive train system.

Abstract: An inlet, a valve chest having a diameter larger than that of the inlet, and an outlet are formed in a valve casing. An annular valve seat is formed between the inlet and the valve chest. A valve element for opening and closing the annular valve seat is disposed within the valve chest. A valve stem is projectingly provided on the inlet side of the valve element. A guide member with which an outer periphery of the valve stem comes into sliding contact is provided at inner ends of ribs which project into the valve chest from an inner wall of the inlet. A recess is formed in the valve element to receive therein the ribs projecting to the valve element and also to receive the guide member.

Abstract: A valve is provided that comprises a valve body including an inlet, an outlet, and a check valve chamber having an opening through the side of the valve body. The valve has a cover secured within the side opening in the valve body. A first valve opening is disposed between the inlet chamber and outlet chamber. A control valve is movable relative to the first valve opening to regulate fluid flow through the first opening when fluid flow is in the inlet-to-outlet direction, and is movable to engage the first valve opening to restrict fluid flow in the outlet-to-inlet direction. The valve comprises a second valve opening disposed between the check valve chamber and the outlet chamber. A check valve member is movable relative to the second valve opening to restrict forward flow and permit reverse flow through the second valve opening.

Abstract: In some embodiments, a process for manufacturing a diaphragm for an air admittance valve includes disposing a first center disk into a first cavity of a first mold, the first center disk includes a hollow stem. A material is provided into the first mold, through the hollow stem and laterally outwardly beyond a perimeter of the first center disk. The material is allowed to harden to form a lateral membrane coupled to the first center disk and extending laterally beyond a perimeter of the first center disk.

Abstract: In some embodiments, an air admittance valve includes a base, a screen plate and a diaphragm engageable with the screen plate. The diaphragm may include a first center disk having a stem and a membrane coupled to the first center disk. The membrane may have a continuous material sized to extend beyond a perimeter of the first center disk, be formed of a material more pliable than the first center disk and be adapted to be coupled to the first center disk through the center disk stem.

Abstract: An anti-drainback apparatus for a filter used in a vehicle transmission, allows fluid to keep the transmission pump primed when the engine is turned off. In one embodiment, the apparatus includes a seal disposed in a neck member of the filter at its outlet, and a body having slanted sides, and a platform base. The body is disposed in the neck member such that the slanted sides of the body abut the seal, and the platform base covers the opening of the neck member, preventing fluid from draining back from the pump into the sump when the engine is turned off. Thus, the body is movable from an unsealed position which allows fluid flow to the transmission when the engine is turned on, and the sealed position which prevents fluid drainback into the filter when the engine is turned off.