Abstract: A heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The HVACR system includes a refrigerant circuit. The refrigerant circuit includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected. A controller is electronically connected to the compressor. The controller is configured to prevent the compressor from operating at a speed that is less than a minimum speed limit. A lubricant separator has an inlet fluidly connected between the compressor and the condenser and a plurality of outlets. A first of the plurality of outlets is fluidly connected to the condenser. A second of the plurality of outlets is fluidly connected to one or more components of the compressor to provide a lubricant to the one or more components.

Abstract: A quick connect coupling mechanism joins an actuator to a bonnet. The quick connect coupling mechanism may utilize machined or otherwise prepared components including one or more specific features, such as slots or grooves, to facilitate a connection between the actuator and the bonnet. For example, the actuator housing may be machined or formed to include an opening to enable radial insertion of the bonnet into a slot formed circumferentially about at least a portion of the actuator housing. The opening may be secured to block radial movement of the bonnet within the housing. A rail system may also be utilized to couple the actuator housing to the bonnet. For example, pairs of grooves may be formed in the actuator housing and bonnet to facilitate insertion of rails. The rails may block both axial movement of the actuator housing and also block rotational movement.

Abstract: Embodiments of the present disclosure include a system for controlling a fluid flow. The system includes a valve body including a bore extending along an axis, an inlet, and an outlet, wherein a flow passage extends transverse the axis from the inlet to the outlet, a stem extending through the bore along the axis, and a valve member coupled to the stem. The valve member is movable along the axis, via the stem, between a closed position where the valve member blocks the flow passage to an open position where the valve member does not block the flow passage. The system also includes a balancing system coupled to the valve member, the balancing system comprising a tether and a balance member, wherein an opening force unseating the valve member is translated to the balance member.

Abstract: Technology is provided for partitioning a shared unified cache in a multi-processor computer system. The technology can receive a request to allocate a portion of a shared unified cache memory for storing only executable instructions, partition the cache memory into multiple partitions, and allocate one of the partitions for storing only executable instructions. The technology can further determine the size of the portion of the cache memory to be allocated for storing only executable instructions as a function of the size of the multi-processor's L1 instruction cache and the number of cores in the multi-processor.

Abstract: Systems, apparatuses, methods, and computer program products are provided for managing geographically distributed data storage in a group-based communication system and for servicing deletion requests related thereto. In some embodiments, an apparatus physically located in a first geographic area defined by a first geographic boundary is provided. In embodiments, upon determining that an entity identifier associated with a message is associated with a geographic data storage policy, the apparatus is configured to transmit a geographic data residency message package comprising message data of the message to a geographic data residency server physically located within a second geographic area defined by a second geographic boundary. The second geographic area is associated with the geographic data storage policy. In some embodiments, the apparatus is configured to update the message data of the message with residency token data received from the geographic data residency server.

Abstract: An aspect of the disclosure pertains to a blood pressure measurement device and methods of obtaining pulse information from a blood pressure measurement. An inflatable bladder defines, at least in part, a pressurizable volume. The inflatable bladder may be inflated to pressurize a user's appendage and temporarily occlude blood flow in the user's appendage, where the inflatable bladder is inflated to a pressure greater than a maximum amplitude pressure from oscillometric data in a pressure profile. The inflatable bladder may be deflated and then re-inflated to a target pressure and held at the target pressure to generate pulse information, or the inflatable bladder may be deflated to the target pressure and held at the target pressure to generate the pulse information.

Abstract: A screw compressor, refrigerant circuit, lubrication method are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. The screw compressor includes a slide valve that is movable between a first position and a second position. The first position corresponds to a high volume ratio and the second position corresponds to a low volume ratio. The slide valve includes a plurality of lubricant passageways selectively connectable to a lubricant source. A first of the plurality of lubricant passageways is configured to be selected to provide lubricant at the high volume ratio, and a second of the plurality of lubricant passageways is configured to be selected to provide lubricant at the low volume ratio.

Abstract: A heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The HVACR system includes a compressor, a condenser, and an evaporator fluidly connected to form a refrigerant circuit. A lubricant return line is fluidly connected to the compressor and to the evaporator. A pressure difference between the compressor and the evaporator induces a fluid flow of lubricant from the evaporator to the compressor.

Abstract: A heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The HVACR system includes a compressor, a condenser, and an evaporator fluidly connected to form a refrigerant circuit. A lubricant return line is fluidly connected to the compressor and to the evaporator. A pressure difference between the compressor and the evaporator induces a fluid flow of lubricant from the evaporator to the compressor.

Abstract: A valve assembly includes a valve body and an opening extending through the valve body along a longitudinal axis. The valve assembly also includes a valve member arranged within the opening, the valve member being movable, along the longitudinal axis, between an open position and a closed position. The valve assembly includes an upper seal positioned to seal against at least a first portion of the valve body. The valve assembly includes a lower seal positioned to seal against at least a second portion of the valve body, wherein both the upper seal and the lower seal travel with the valve member as the valve member moves between the open position and a closed position.

Abstract: An apparatus for actuating an end-member is disclosed. The apparatus includes a housing, a spring within the housing, and a spring plate forming a restriction for the spring within the housing. A brake member is associated with the spring plate for retaining the spring plate in one or more positions. A drive rod is associated with a motor to enable a first movement of the drive rod and to enable a second movement of spring plate. The first movement or the second movement enables the actuating of the end-member in one or more different positions for the end-member. The brake member may be engaged or disengaged to control or decouple spring compression forces in the actuator when the spring is compressed.

Abstract: Embodiments of the present disclosure include a system for controlling a fluid flow. The system includes a valve body including a bore extending along an axis, an inlet, and an outlet, wherein a flow passage extends transverse the axis from the inlet to the outlet, a stem extending through the bore along the axis, and a valve member coupled to the stem. The valve member is movable along the axis, via the stem, between a closed position where the valve member blocks the flow passage to an open position where the valve member does not block the flow passage. The system also includes a balancing system coupled to the valve member, the balancing system comprising a tether and a balance member, wherein an opening force unseating the valve member is translated to the balance member.

Abstract: Embodiments of the present disclosure include a system for determining a valve member position. The system includes a valve having a flow passage extending therethrough. The system also includes a valve member positioned in a cavity that intersects the flow passage, the valve member coupled to a valve stem that axially translates the valve member between an open position and a closed position. The system includes an actuator coupled to the valve stem, the actuator providing a motive force to drive the axial movement of the valve member via the valve stem. The system includes a closure cap coupled to the actuator, the closure cap comprising a sensor feature arranged within an interior portion of the closure cap, the sensor feature arranged to react to an input from an actuator piston indicative of an actuator piston position within the interior portion of the closure cap.

Abstract: Embodiments of the present disclosure include a method of replacing valve operation methods during fracturing operations including installing a first operator on a first valve of a first fracturing tree. The method also includes installing a second operator on a second valve of a second fracturing tree, the second fracturing tree being adjacent the first fracturing tree. The method also includes removing the first operator from the first valve, the first valve maintaining a position on the first fracturing tree after the first operator is removed. The method further includes removing the second operator from the second valve, the second valve maintaining a position on the second fracturing tree after the second operator is removed. The method also includes installing the first operator on the second valve after the first operator is removed from the first valve and after the second operator is removed from the second valve.

Abstract: Embodiments of the present disclosure include a valve assembly including a supply housing with a first bore and an injectable housing coupled to the supply housing with a second bore. The valve assembly further includes a piston extending through at least a portion of the first and second bores, the piston being reciprocable axially along a longitudinal axis. The valve assembly also includes a first inlet at a first end of the supply housing for directing a working fluid toward a first end of the piston. The valve assembly includes a second inlet extending through the injectable housing toward a cavity that receives an injectable material. The valve assembly also includes a second outlet at a second end of the injectable housing that directs the injectable material out of the injectable housing as the piston moves axially along the longitudinal axis.

Abstract: A screw compressor, refrigerant circuit, lubrication method are disclosed. The screw compressor includes a suction inlet that receives a working fluid to be compressed. A compression mechanism is fluidly connected to the suction inlet. A discharge outlet is fluidly connected to the compression mechanism that outputs the working fluid following compression by the compression mechanism. The screw compressor includes a slide valve that is movable between a first position and a second position. The first position corresponds to a high volume ratio and the second position corresponds to a low volume ratio. The slide valve includes a plurality of lubricant passageways selectively connectable to a lubricant source. A first of the plurality of lubricant passageways is configured to be selected to provide lubricant at the high volume ratio, and a second of the plurality of lubricant passageways is configured to be selected to provide lubricant at the low volume ratio.

Abstract: Systems, apparatuses, methods, and computer program products are provided for managing geographically distributed data storage in a group-based communication system. In some embodiments, an apparatus physically located in a first geographic area defined by a first geographic boundary is provided. In embodiments, upon determining that an entity identifier associated with a message is associated with a geographic data storage policy, the apparatus is configured to transmit a geographic data residency message package comprising message data of the message to a geographic data residency server physically located within a second geographic area defined by a second geographic boundary. The second geographic area is associated with the geographic data storage policy. In some embodiments, the apparatus is configured to update the message data of the message with residency token data received from the geographic data residency server.

Abstract: Methods, systems, and apparatuses are provided for reservation management for client-initiated polling requests in a communication system.

Abstract: Various embodiments are directed to group-based data storage systems configured for maintaining data exchanged between client devices within channel-specific shards each corresponding with one or more group-identifiers to provide group-based access to those channel-specific shards and for applying group-specific policies for data stored within those channel-specific shards. Membership of particular users within particular groups and within particular channels may be monitored such that access to particular channel shards may be controlled based on group-memberships of the users, and access to data stored within particular channel shards may be controlled based on channel-memberships of the users.

Abstract: An air handling unit has an interior wall configured to selectively retain a removable component of the air handling unit. An air handling unit has an interior wall configured as a drain pan. An air handling unit has an outer skin joined to the interior wall, an insulator disposed between the interior wall and the outer skin, and the interior wall has a mounting channel configured to selectively retain a removable component of the air handling unit.