Abstract: In one form a capacitive sensor is disclosed for immersion into a fluid, the capacitive sensor having a housing and first and second electrodes with the first electrode being disposed at least partially within the housing and electrically connected to a circuit, the second electrode being electrically connected to the circuit via an electrical connection and physically separated from the housing containing at least a portion of the first electrode so that at least a portion of the electrical connection or second electrode is located above or outside of the fluid to reduce the risk that minerals will form between the electrodes. In another form the electrodes are separated into their own cavities of the sensor housing via a bridging member which separates the electrodes to help reduce the risk of mineral buildup occurring between the electrodes. In other forms, capacitors, capacitive sensors, pump controls and systems utilizing these features are disclosed along with methods and apparatus relating to same.

Abstract: Some embodiments of a medical infusion pump system include a pump device and a removable controller device. When the pump device and the removable controller device are removably attached to one another, the components may provide a portable infusion pump unit to dispense medicine to a user. In particular embodiments, the removable controller device includes a user interface to readily provide information, for example, about the operation of the pump.

Abstract: A vacuum pump capable of pumping solid, liquid and gas, or any combination thereof, including a drive (40) and a manually disengageable pumping system connected thereto. The pumping system is composed of a two- or three-chambered canister (1, 18, 21) within which solids, liquids, and gases can be separated from one another. A highly flexible diaphragm (24) attached to the canister and sealed against it circumferentially, facilitates this separation, when reciprocating and pumping. The components of the pumping system are designed to be disposable, and the two- or three-chambered canister provides for a highly efficient pumping system that is significantly smaller in size than those previously known. The pump is particularly useful for medical applications.

Abstract: A compressor including a shell, a compression mechanism disposed within the shell, a motor actuating the compression mechanism, and a terminal body secured to the shell, may further include at least one conductor pin extending through the terminal body and a fence disposed around the terminal body and secured to the shell. A plug assembly having an inner core surrounded by an outer body includes at least one electrical receptacle housed by the inner core for selective electrical communication with the at least one conductor pin. A seal may be integrally formed with the outer body and may engage the fence when the at least one electrical receptacle is in electrical communication with the at least one conductor pin.

Abstract: A method in connection with a pump drive connected to a container or the like, wherein a frequency converter is arranged to supply power to a pump in such a manner that a pump flow (Qp) is responsive to an estimated mean incoming flow (Qest) to the container. The method includes draining the container, allowing the container to fill during a predefined filling time (tfill) while the pump is inactive, draining the container again at a known pump flow (Qp,nom), defining the drainage time (tdrain) defining an estimated mean incoming flow (Qest) on the basis of the filling time (tfill), drainage time (tdrain) and known pump flow (Qp,nom), and setting the power supplied by the frequency converter to the pump to be such that the pump flow (Qp) corresponds to the produced estimated mean incoming flow (Qest).

Abstract: A cooling device for interior and exterior surfaces of a mud pump liner, in which one end of the suction tube 3 is connected to the water tank 2, with the other end of the suction tube 3 connecting to the intake port of the spray pump 4, and an end of the discharge pipe 5 is connected to the outlet port of the spray pump, with another end thereof connecting to the interior cooling nozzle 1; and said another end of the discharge pipe 5 is also connected with a exterior cooling nozzle 6, the spray port of the interior cooling nozzle 1 is placed inside the liner 7, and the spray hole of the exterior cooling nozzle 6 is placed outside the liner 7. The present invention additionally performs spraying against the outer surface of the liner and cooling it so as to sufficiently cool the liner/piston. In this way, the working temperature of the liner/piston is decreased and the service life thereof is extended. Experiments show that the working temperature of the liner/piston is decreased by at least 16° C.

Abstract: A power engine natural gas compressor system to optimize the extraction of natural gas from a reservoir and related gathering systems. The system is controlled by a distributed control system, which is a computer readable program, and allows for humane machine interface allowing for a more efficient use of the available power supply resulting in increased efficiency. Through the use of an integrated control system the present invention achieves a precise control of the overall operation of the system, which would be impossible to achieve through manual manipulation. The system of the present invention is a system capable of multiple functions with minimal losses with respect to efficiency. Different from the compressors found in the market the system uses a sophisticated process and control system, and is constructed and arranged in such a way that someone with little to no training can operate and maintain it.

Abstract: A personal ventilation system uses a cross-flow fan and one or more filters, where the filter preferably has a cylindrical or elongated elliptical shape that at least partially surrounds the rotor of the cross-flow fan. The filters preferably remove particles, undesired gases, and micro-organisms.

Abstract: A pump assembly suitable for negative pressure wound therapy that includes an internal filter for preventing contamination in various components of the pump assembly, such as the pump unit. The internal filter is located in an isolated filter chamber, and inlet vacuum tubing that could contain fluids or bacteria are located inside a double containment sleeve to prevent contamination of components of the pump. The inlet vacuum tubing may be removed without opening the main pump housing and without contaminating the contents of the pump housing.

Abstract: A flexible tank has a volume-variable chamber formed so as to be sectioned by a flexible tube that is expanded or contracted in accordance with the amount of the contained chemical liquid, and adaptor parts attached to the flexible tube. A primary-side port open to the volume-variable chamber is open into one of the adaptor parts, and a secondary-side port open to the volume-variable chamber is open into the other adaptor part. The contact between the chemical liquid and air in the volume-variable chamber is suppressed to minimum level, thereby containing the chemical liquid without deteriorating the cleanliness of the chemical liquid, and improving discharge accuracy of the chemical liquid.

Abstract: An air-cooled electric motor is provided, which may be used in a compressor assembly, including a motor unit with a motor housing out of which a drive shaft extends, such that the drive shaft drives a ventilator, the ventilator includes at least two radially and/or axially separated ventilator sections to propel a first airstream as well as at least one other, second airstream that is separate from the first airstream, such that the airstreams are conducted separately on both the inflow side of the ventilator and the outflow side of the ventilator.

Abstract: A plurality of vertically standing plates are assembled in a lattice form to a divided member 101 as a floating type wave-suppressing members. The divided member 101 is allowed to float in an interface 24 between working fluid and refrigeration oil of an oil reservoir 21. The interface 24 is prevented from rippling by turning flow, oil drops torn from the interface 24 by the turning flow is reduced, and oil drops of the refrigeration oil are prevented from being supplied from the interface 24 to the working fluid.

Abstract: A booster pump system, for boosting a flow of water from a water source, includes a housing having a retractable handle. The booster pump system also includes a water pump positioned within the housing. The pump has an inlet and an outlet, and is designed to raise the pressure of the flow of water by an amount in a range of 20-200 pounds per square inch. The pump is also designed to raise the flow rate of the flow of water by an amount in a range of 0.5-5 gallons per minute. The booster pump system further includes a hose reel positioned within the housing, where the hose reel supports a garden hose attached to the outlet of the pump.

Abstract: The invention relates to a clamping device which clamps the pump stator with the pump housing and an additional pump end part. The width of the clamping bars is at least 20% of the cross section of the pump stator in order to stabilise the clamping device and the simplify handling. All parts which are required to clamp the pump end part remain on the clamping bars.

Abstract: An air pumping device includes an inflation module that includes an air pump, a counting unit, and a control unit coupled to the air pump and the counting unit. The air pump is configured to one of inject air into and remove air from an inflatable article. The counting unit is configured to count a predetermined time period. The control unit is configured to receive a control signal, to activate the air pump and trigger counting of the counting unit in response to the control signal, and to deactivate the air pump upon completion of counting. An air pumping method and an airbed assembly are also disclosed.

Abstract: A system for controlling solids within a wellbore of a well includes a pump positioned within a substantially horizontal portion of the wellbore. A first tubing string is operatively connected between the pump and a surface of the well for removing liquid from the wellbore that is pumped by the pump. A second tubing string may also be operatively connected to the pump and extends downhole of the pump. Either or both of the first and second tubing string includes a longitudinal axis that is offset from an axis of rotation about which the second tubing string is capable of being rotated.

Abstract: An air-cooled multi-stage compression system using centrifugal compressors is disclosed. It is packaged in a comparable volume to a water-cooled unit having the same driver horsepower. The performance is comparable and opportunities for use of the waste heat are available. Existing water-cooled units can be retrofit to run in an air-cooled mode. Special applications such as combined air compression and nitrogen compression useful in air separation applications are presented. The circulating cooling air can make the unit into an air filter of its surrounding space. Cooling air is drawn through the enclosure before being forced through the coolers above. This air movement can cool compressor housings, the control panel and the drive motors mounted in the enclosure.

Abstract: A manually operated pump for a bicycle comprises two cylindrical members with a first cylindrical member slidable within a second cylindrical member. One end of the first cylindrical member is provided with a fitting to receive a saddle while one end of said second cylindrical member is provided with a foot stand assembly which comprises a foldable foot stand and a retractable air hose. The pump is designed to be received in the seat post of the bicycle frame and the two cylindrical members are arranged to be releasably connected together in a closed position.

Abstract: A bladeless fan assembly for creating an air current includes a nozzle mounted on a base housing a device for creating an air flow. The nozzle includes an interior passage for receiving the air flow and a mouth for emitting the air flow. The nozzle defines, and extends about, an opening through which air from outside the fan assembly is drawn by the air flow emitted from the mouth. The nozzle also includes a heater for heating the air flow upstream of the mouth.

Abstract: Disclosed is a pressurized internal oil management system, comprising an oil dam, at least one oil separator, at least one oil collection manifold, at least one oil pump, and one or more paths for returning the separated oil; said system integrated within the casing of a fluid displacement device to supply adequate lubrication regardless of orientations under zero to full gravity, and methods and applications related thereto. Fluid displacement devices useful herein include oil lubricated rotary or reciprocating machinery, such as compressors, expanders, pumps and engines, in the casing of which exists one or more drive mechanisms that can be utilized to operate the oil management system, in most cases without even increasing the size of the casing.

Abstract: A sucker-rod pumping system includes diametrically charged rare earth magnets having significant monopolar character mounted on the rod string and, optionally, within a magnet barrel below the pump barrel. The magnets are jacketed to preclude contact with crude petroleum. The magnets subject the petroleum to a significant magnetic flux to substantially preclude precipitation of paraffins and asphaltenes with a minimum of retrofit to existing equipment and without substantially altering the operation of the rod string.

Abstract: A remote suction configuration, method, and retrofit kit for ventilating exhaust from an exhaust-producing power tool used indoors. An exhaust conduit is connected between an exhaust port of an exhaust-producing tool used within a substantially enclosed structure and an intake port of a vacuum apparatus placed externally to the structure. Universal connectors or retrofit adapters are provided at the ends of the exhaust conduit to connect the exhaust conduit between an exhaust port of the exhaust-producing tool and an intake port of the vacuum apparatus. In this manner, exhaust produced by the tool may be actively pulled through the conduit to an external environment instead of relying on the tool to push the exhaust the entire length of the conduit.

Abstract: A compression control unit for a compression device includes a mount on the back of a housing for mounting the compression control unit on a bed unit. The mount includes a securing portion spaced from a back of the housing and lying in a plane generally opposing the back of the housing. The securing portion partially defines a channel for receiving a part of the bed unit to secure the compression control unit to the bed unit. Spaced apart wing portions extend generally upward and laterally outward relative to the securing portion. The wing portions are configured so that fluid tubing secured to an outlet of the compression control unit can be wrapped around the wing portions when the compression control unit is mounted on the bed unit.

Abstract: A compressor discharges a flow of compressed fluid at a predetermined temperature. The compressor includes a sensor positioned to measure a first temperature indicative of the temperature of the compressed fluid, a coolant source, a cooler positioned to receive a first flow of coolant from the coolant source and discharge a flow of cooled coolant, and a valve positioned to receive the flow of cooled coolant and a second flow of coolant from the coolant source. The valve is configured to discharge a coolant flow to the compressor and the coolant flow has a ratio of cooled coolant to second flow of coolant that is variable in response to the first temperature.

Abstract: A filtration and float apparatus and method are disclosed, wherein an integrated float frame and filter is provided, a buoyancy of the float frame and filter causing a sealing of the filtration and float apparatus with a pump.

Abstract: A self-attaching pump includes a cylinder, a nozzle attached to the cylinder, a piston installed in the cylinder, a rod connected to the piston, a handle with a first end and an opposite second end, a fastener for pivotally connecting the second end of the handle to the rod and a stressing device arranged on the cylinder for stressing the self-attaching pump. There are defined a first value for the distance between the fastener and the first end of the handle, a second value for the length of the elastic element when the stressing does not stress the self-attaching pump and a third value for the distance between the piston and the nozzle when the first end of the handle reaches the stressing device while the stressing device does not stress the self-attaching pump. The first value is larger than the second value that is larger than the third value.

Abstract: A device for delivery of flowable media, especially of lubricants, includes a pump (1) driven by a motor and forming a component of a line system. At least one heating element (21) activated by energy supply is located outside of the housing (3) of the pump (1) in a position enabling heat transfer to the housing (3).

Abstract: A retaining system for securing a closure at an installed position within a bore. The bore being in a portion of a housing and having screw threads along at least a portion thereof. The closure having an internally threaded hold extending therein. The closure in the installed position closes the bore. The retaining system comprising a retaining cover for obstructing removal of the closure from the bore. The retaining cover being receivable in the bore in a position generally adjacent the closure. The retaining cover having external threads interengageable with the screw threads of the bore such that the cover is rotatable relative to the housing in a tightening direction for movement of the cover into the bore toward the closure and rotatable in an opposite, loosening direction for movement of the cover out from the bore away from the closure. The cover having a central axis of rotation.

Abstract: A pump ring. The pump ring is suitable for a reaction chamber and capable for extracting gas from the reaction chamber in a uniform gas flow rate. The pump ring comprises a ring body and a top ring part located on the ring body. The top ring part is apart from an inner wall of the reaction chamber with a fixed distance. Therefore, a gas-extraction path composed of the reaction chamber, the ring body and the top ring part is unobstructed. Hence, the turbulence flow of the extracted gas can be efficiently suppressed and the problems of the accumulation of the impurities and reaction chamber contamination can be solved.

Abstract: Method and arrangement for providing a compressed air system in a vehicle that includes a connection (6, 10) for delivering compressed air from a compressor (2) to the rest of the compressed air system (1). An oxidation catalytic converter (9) is included that is designed to clean the compressed air and which is located along the connection (6, 10). The connection (6, 10) includes a line (10) that forms a connection between the oxidation catalytic converter (9) and the rest of the compressed air system. The invention also includes a valve (11) that is arranged upstream of the rest of the compressed air system (1) and that can be adjusted so that in a first position it will allow and in a second position will prevent the delivery of air to the rest of the compressed air system (1), depending on the operating condition of the compressor (2). The invention provides an improved system in which the risk of contaminated air being delivered to the compressed air system is minimized.

Abstract: A fuel control system is provided in a single compact modular unit. The unit includes a motor driving a highly accurate cam-operated double-acting piston metering pump, both of which are contained in a liquid fuel environment. As the liquid fuel is pumped it works to cool internal components including the motor. An electronic motor drive is contained in a dry chamber of the unit for controlling operation of the motor and pump and is cooled indirectly by the fuel as well. A pressure sensitive flow divider is also included for selectively providing one or multiple output fuel flow paths depending upon whether a pressure threshold is reached, for example to send fuel to primary and secondary burner nozzles. Filter, filter bypass, pressure relief, and fuel shut-off components are also integrated into the single modular unit.

Abstract: An electrical power supply for powering electrical pump instrumentation and process control equipment associated with a pump having a rotating member. The power supply includes an electrical current generator driven by the rotating member of the pump, and a voltage regulator for regulating the output of the generator.

Abstract: The high pressure fluid pump includes a driver defined by a float riding on the waves of a sea surface, a fluid pump housing, an impeller operatively attached to the driver and disposed within the fluid pump housing, a backflow check system connected to the fluid pump housing, and an outflow check system controlling the pressure, volume of fluid flow, and direction of fluid flow to various other systems. The pump may be used to pump fluids other than seawater and may include features multiplying pumping mechanical advantage for a given tidal range.

Abstract: An air compressing device includes a piston slidably engaged in a cylinder housing and driven by a motor to generate a pressurized air, the cylinder housing includes an outlet tube, and an outlet port extended from the outlet tube, and an anchor plate extended from the outlet port, and a facility includes a coupler for engaging with the outlet port and the anchor plate and for quickly and detachably securing the coupler and the facility to the outlet port of the outlet tube and for allowing the pressurized air to be supplied to the facility. The facility is selected from a hose, a relief valve, a pressure gauge, or a cover, and the coupler includes a C-shaped structure.

Abstract: A hydraulic system for a transmission has a diffuser housing with a fluid inlet passage that feeds one or more pump inlet ports, and a fluid return passage, such as to return fluid from a pressure regulator valve, that is in fluid communication with the fluid inlet passage. The hydraulic system also has a filter housing with a filter outlet portion that is in fluid communication with the fluid inlet passage upstream of the pump inlet port(s). The fluid return passage is downstream of the filter outlet portion. Thus, flow through the fluid return passage can create suction, causing increased flow through the filter outlet portion, such as from a fluid sump. Specifically, the diffuser housing is configured so that the fluid inlet passage has a converging portion downstream of the filter outlet portion and a diverging portion downstream of the converging portion.

Abstract: The invention downsizes and simplifies structures of a compressor and its driving system apparatus, and achieves a reduction of a noise. An oil free screw compressor is constituted by compressor main bodies compressing a gas, a motor driving rotors of the compressor main bodies via step-up gears, a gear casing storing the step-up gears, cooling apparatuses cooling a discharge air and the like. An oil tank is provided independently from the gear casing, the motor is fixed to a common base, the gear casing is integrally attached to the motor via a flange, and the compressor main bodies are integrally attached to the gear casing via the flange. Further, the cooling apparatuses are arranged in an upper side of the driving system apparatus, and a cooling fan is installed in an upper side thereof.

Abstract: A fluid pump assembly for a fuel cell system is disclosed, the fluid pump assembly including a mounting structure having a receiving element formed thereon and a fluid pump having at least one locking element formed thereon, wherein the mounting structure is a lower end unit of the fuel cell system, and wherein the receiving element captures the locking elements of the fluid pump to militate against lateral, axial, and rotational movement of the fluid pump.

Abstract: Trailer for carrying a welding unit for butt-welding pipe portions, comprising a chassis with brackets for supporting and locking the body of a welding unit for butt-welding pipe portions, the chassis being provided with at least one pair of steered wheels, which can be oriented by means of a drawbar, and at least one pair of driving wheels, which are actuated by an electric motor, which in turn is powered by a current generator which is provided, together with the associated internal-combustion engine, on board the trailer; the chassis also supports a hydraulic pump and a hydraulic unit to which the hydraulic components of the body of the welding unit are to be connected, and an electrical unit for connecting the electrical devices with which the welding unit is provided; the chassis is provided with a fuel tank for the internal-combustion engine and an oil tank for the pump, the hydraulic unit and the hydraulic components of the welding unit connected to the pump; in this manner, the welding unit can be mov

Abstract: Disclosed is an ice making apparatus and method whereby the cleanliness of ice is improved through the use of ozone (O3). The invention utilizes a volute aspirator that is positioned within the intake of a conventional sump pump. The vacuum generated by the pump draws upon both a supply of ozone and water, whereby the ozone is entrained within the water. The presence of the ozone within the water inhibits the growth of bacteria and other contaminates. The ozonated water is then used in the production of ice.

Abstract: The present invention discloses a compressor including a compressor main body (20) for compressing refrigerant, a shell (100) for accommodating the refrigerant and the compressor main body (20), and mounts (130) attached to the front and rear of the shell (100) for the installation of the shell (100), and having a natural frequency controlled according to a natural frequency of the shell (100) for the dynamic vibration absorption. In an assembly state where the compressor main body (20) and the shell (100) are completely coupled to each other, the shell (100) is exited by an impact hammer and the natural frequency of the shell (100) is measured. As the natural frequency of the mount (130) is controlled according to the natural frequency of the shell (100) to absorb vibration, Vibration of the shell (100) can be prevented. That is, the mount functions as a dynamic vibration absorber to suppress vibration and noise of the shell (100).

Abstract: A suction device for dental, medical and industrial purposes is described which includes a radial fan with a suction side and a delivery side. An air outlet of a centrifugal separator is connected to the suction side of the radial fan. At least one drive motor controlled by a control unit, and in the form of a rotating electric motor, drives the radial fan and the centrifugal separator. A fan drive motor and a separator drive motor are arranged, uncoupled in terms of rotation, one behind the other on a common shaft fixed to the housing. The respective stators are supported by the common shaft. The rotating parts of the radial fan are fixedly connected to the rotor of the fan drive motor, and the rotating parts of the centrifugal separator are fixedly connected to the rotor of the separator drive motor and are mounted so as to rotate coaxially with respect to the shaft fixed to the housing.

Abstract: A device for the local cooling or heating of an object by means of a fluid is disclosed. The device comprises a circulation pump for the fluid. A thermal contact element for making thermal contact with the object is integrated in the circulation pump. The circulation pump has a housing part which is flexible and/or movable, the housing part being the thermal contact element.

Abstract: A compressor unit for an air suspension system of a motor vehicle, having a compressor, an air dryer and a compressed-air port for delivering compressed air from the compressor to the air suspension system and for introducing compressed air from the air suspension system into the air dryer. A ventilation line is provided from the air dryer to the environment of the compressor. The ventilation line has an upwardly convex bend when the compressor unit is in installed position.

Abstract: The amount of chemical liquids dispensed by a chemical liquid supply apparatus is stabilized and dispensing accuracy is remarkably improved. A pump discharges a liquid accommodated in a liquid tank. A filter is connected to the pump through a pump outlet flow path to which a pump discharge-side valve for opening/closing the flow path is provided. A dispensing nozzle (liquid dispense portion) is connected to the filter through a liquid discharge flow path to which a discharge valve for opening/closing the flow path is provided. A vacuum source communicates with the filter through an exhaust flow path to which a deaeration valve for opening/closing the flow path is provided.

Abstract: A refrigerating compressor includes a hermetic container accommodating oil, a motor accommodated in the container, a compressing unit provided under the motor and driven by the motor, and a vibration insulating wall. The compressing unit has a crankshaft, a cylinder block, a piston, a connecting rod and a feed oil pipe. The vibration insulating wall is placed inside the container at the bottom and surrounds the feed oil pipe with a given distance in between.

Abstract: A fluid separator device allows for introducing air entrained in a liquid flow to a centrifugal pump in a manner that will not allow the pump to become gas bound. One example device designed according to this invention includes a housing having an inlet and an outlet downstream of the inlet. An air chamber is positioned on an opposite side of the inlet from the outlet. An air flow passage allows air from the air chamber to be introduced near a rotor assembly input of a centrifugal pump such that relatively small air bubbles are introduced to the liquid flow through the rotor assembly in a manner that prevents the air bubbles from recollecting into a larger bubble that would otherwise interfere with the centrifugal pump operation.

Abstract: A rotating assembly for electric fan in one embodiment includes a rotating member provided on an end of the rotating shaft for fastening the fan blades and including a protrusion extended oppositely the rotating shaft, and a coil formed around the protrusion; a stationary magnetic mechanism formed around an end of the protrusion and including at least one pair of magnetic poles on its inner surface spaced from the coil, and a counterweight formed externally; and a load radially extended from the protrusion, a plurality of light emitting elements, a circuit electrically connected to both the magnetic poles and the coil, and a controller electrically connected to the circuit for controlling an activation of the light emitting elements. Activating the electric fan will cause the light emitting elements to emit light. In another embodiment, negative ions are generated.

Abstract: In subsea multiphase pumping systems, the use of a gas-liquid cylindrical cyclone (GLCC) as a separator to recirculate liquid from pump discharge to pump suction, especially during high gas inlet conditions from a multiphase petroleum stream. Further contemplated is protection of the pump from momentary high gas inlet conditions due to an incoming slug flow profile from a petroleum stream, via transforming a naturally varying multiphase petroleum stream into separated phases for measured distribution to the pump suction and ensuring a minimum liquid flow.

Abstract: A pumping device and a height adjuster for a vehicle seat are disclosed. The pumping device comprises a support plate; a cam receiver accommodated in the support plate; a brake cam received in the cam receiver to be integrally rotated with the shaft, and defining receiving spaces between the brake cam and the cam receiver; locking means received in each receiving space to allow and prevent rotation of the brake cam in the cam receiver; a control plate for applying the pushing force to the locking means; a bidirectional clutch coupled to the control plate if rotating force is applied and returned to a state of being decoupled from the control plate if the rotating force is not applied; a cover plate assembled with the support plate; a lever plate provided outside the cover plate; and elastic returning means for returning the lever plate to a predetermined reference position.

Abstract: A wellbore fluid production system that is disposable in a wellbore comprising a separator, a pump, a compressor, and a motor. The separator segregates the gas and liquid and delivers the gas to the compressor inlet and the liquid to the pump inlet. The pump pressurizes the liquid for delivery to the surface. The compressor pressurizes the gas for reinjection into the wellbore, injection into another subterranean formation, or for delivery to the surface.