Abstract: The invention pertains to the field of fluidics and jet technology. The essence of the invention: is a vacuum-producing device composed of a liquid-gas jet apparatus, a separator and a pump, is furnished with a jet pump, so that the gas inlet of the liquid-gas jet apparatus is connected to a pipeline for discharge of vapors from a rectification column, the liquid inlet of the liquid-gas jet apparatus is connected to the discharge side of the pump, the outlet of the liquid-gas jet apparatus is connected to the separator, the passive medium inlet of the jet pump is connected to the separator, the outlet of the jet pump is connected to the suction side of the pump, the active nozzle of the jet pump is connected to a pipeline for export of a liquid fraction from the rectification column. This vacuum system results in increased efficiency and productivity.

Abstract: A pump and filter assembly including a filter housing secured in a pump housing. The filter housing has a filter outlet portion with a central filter outlet passage. A plurality of nozzle passages are disposed adjacent and radially outward of the filter outlet passage. The nozzles communicate with an annular recess formed in the filter outlet portion. The annular recess receives return bypassed hydraulic fluid from a regulator valve for distribution through the nozzles into an inlet stream of fluid flowing through the filter outlet passage. The inlet stream velocity is increased which increases the pressure at the pump inlet. The increased pressure at the pump inlet allows the pump to operate at higher speeds without cavitation.

Abstract: The present invention relates to a system for minimizing emulsion formation in a pumped oil well by establishing substantially core annular flow at the outlet of the system. The core annular flow regime is established at the outlet of the system through a combination of a pump outlet and a transition conduit.

Abstract: A filter element is made of a mold body of filter materials and sandwiched between protrusions of a pump casing and a flange, so that the filter element may be assembled easily with the pump casing and the flange. The filter element is disposed within a fuel tank together with a fuel pump and a pressure regulator. Fuel discharged from the fuel pump is led laterally through fuel communication passages along the fuel inlet side surface of the filter element, so that the fuel may flow uniformly across the filter element.

Abstract: The invention relates to the field of petrochemical industry. The essence of the invention: is a vacuum-producing device, comprising a liquid-gas jet apparatus, a separator and a pump, is furnished with a mixer. The gas inlet of the liquid-gas jet apparatus is connected to the pipeline for export of a gas-vapor phase from a rectification column, the liquid inlet of the liquid-gas jet apparatus is connected to the discharge side of the pump, the outlet of the liquid-gas jet apparatus is connected to the separator, the gas outlet of the separator is connected to consumers of compressed gas, the outlet of the mixer is connected to the suction side of the pump, the inlet of the mixer is connected both to the pipeline for export of a liquid faction from the rectification column and to the liquid outlet of the separator. The offered jet pump vacuum-producing unit is more effective, more capable and less harmful to the environment in comparison to existing units.

Abstract: A machine including a fluid compressor; a generator; a prime mover operably connected to the compressor and the generator; a machine switching means for switching the machine to a first mode of machine operation where only the compressor is operable, to a second mode of machine operation where only the generator is operable, to third mode of machine operation where neither the compressor nor the generator are operable, or to a fourth mode of machine operation where both the compressor and generator are operable.

Abstract: An air pump (10) having a separation chamber (15) defined by a top wall (11), a bottom wall (12) and generally annular side walls (13). A liquid entry tube (24) configured to draw air into a stream of liquid passing through the liquid entry tube is coupled to the separation chamber so that the air/liquid mixtures rotates within the separation chamber. The rotation of the mixture causes air to accumulate within a central zone (30) and the liquid to accumulate about a peripheral zone (31). The continued flow of the mixture causes the accumulating air to become pressurized where it is released through an air exit tube (20) in fluid communication with the central zone of the separation chamber. The liquid is expelled through a liquid exit port (18).

Abstract: The invention relates to a piston pump having a piston that is axially displaceable in a bush. In order to keep the piston in the bush in a manner secured against loss, a tubular filter is secured to the bush in the extension thereof; the filter has a smaller inside diameter than the bush and in this way keeps the piston in the bush.

Abstract: A linear compressor having improved heat-radiating performance incorporates first and second cylinders disposed coaxially, a first piston reciprocatably disposed inside the first cylinder, a second piston reciprocatably disposed inside the second cylinder, a compression chamber formed by the front face of the first piston and the front face of the second piston and a connecting wall connecting the first and second cylinders, and multiple working gas passages having openings formed in the connecting wall and connecting the compression chamber to the outside via these openings. The working gas passages are formed on a plane perpendicular to the axial direction of the first and second cylinder. Heat-radiating means are provided around the working gas passages. The first cylinder and the second cylinder are made of aluminum (or an aluminum alloy).

Abstract: The present invention provides an air compressor which includes an air drier filled with a drying agent and having a first passage for supplying compressed air to one air supplied part while absorbing moisture from the compressed air by passing the compressed air through the drying agent (27) and a second passage (28a) for supplying the compressed air to another air supplied part without passing the compressed air through the drying agent. The air supplied through the first passage returns through the same passage to dry the drying agent.

Abstract: In one embodiment a reverse osmosis permeate pump with shut off valve and reverse osmosis system employs bypassed feed water from the reverse osmosis membrane to drive a water wheel and gear set to reciprocate a piston back and forth between two chambers in the pump. Permeate from the membrane is introduced to the respective chambers by a pair of fluid inlets and discharged from the respective chambers through a pair of discharges to a storage tank. Flow through these respective inlets and discharges is a function of the direction in which the piston is moving and whether it is imparting a pressure or suction on a given chamber. A second piston is exposed to the pressure in the discharges from the chambers and the second piston moves between a position permitting incoming feed flow to the membrane, and a position blocking that flow upon increase in pressure in the fluid discharge from the chambers. In another embodiment, the reverse osmosis permeate pump is powered by an independent source of power.

Abstract: A rotary pump includes a housing having an inner surface that confines a rotor chamber. Two parallel shafts are mounted pivotally on the housing and extend axially through the rotor chamber. Two meshing multi-lobe rotors are mounted on the shafts within the rotor chamber, respectively. Each of the rotors has a plurality of lobes projecting radially therefrom toward the inner surface without contacting the inner surface.

Abstract: An integral oil filter-pump system for an electric power device which involves a cabinet having an oil-filled compartment for containing the power device, as well as a circulation pump for circulating oil through the system, including the compartment for containing the power device.

Abstract: A water release system includes a compact aftercooler connected to receive hot, moisture laden compressed air from a compressor having a load cycle under control of a governor. A water release valve is connected between a header of the aftercooler and an unloader pressure line connected to the governor. The valve ordinarily remains open until it receives a certain, pressure value signal from the unloader line which is effective to close the valve. A switch is located in pressure sensing relationship with the aftercooler, and a solenoid valve is electrically connected to the pressure sensitive switch and pneumatically connected between the water release valve and the governor.

Abstract: A modular fan filter unit designed to supply process control air to mini-enclosure clean rooms. The modular fan filter unit is easy to remove, repair, and replace in the clean room environment. It has a readily accessible filter mounted across its bottom surface and an internal variable frequency drive fan. The fan pushes air through the filter into a clean room. Multiple numbers of modular fan filter units may be connected together as an array.

Abstract: A compressor that includes a base; a housing supported on said base, said housing and base defining a compression chamber; and a compression module supported on said base within said compression chamber, said base including at least two support channels, each of the at least two support channels including a first group of flow openings for supplying a volume of uncompressed fluid to the compression module.

Abstract: A fuel pump module with an inlet fuel filter has a vapor inlet in communication with the interior of the filter and constructed to reduce the size of larger vapor bubbles trapped within the filter before they are ingested by the fuel pump downstream of the filter to limit the amount of fuel vapor ingested by the fuel pump at one time. Preferably, a tubular inlet sleeve is integrally connected with the fuel filter and press fit onto the inlet of the fuel pump as a subassembly with the vapor inlet passage formed in the inlet sleeve. The vapor inlet passage may be a slot formed in the inlet sleeve providing a reduced area flow path through which vapor in the interior of the filter may pass before entering the fuel pump.

Abstract: A system of geometric guides and baffles is used for directing and diffusing external air drawn from a fan blower before distributing the flow evenly to the outlet of a fan filter unit. This arrangement not only reduces the turbulence within a fan filter unit but also maintains the particle count of air drawn through the same system. Furthermore, the present invention is implemented in dimensions substantially similar to that of the fan blower. As such, the present invention minimizes noise of a fan filter unit even in confined clean room facility.

Abstract: There is a cooler fan assembly having a shroud, a fan blade and motor to produce an air flow, a first heat exchanger, and a second heat exchanger. The first heat exchanger cools compressed air; the second heat exchanger cools a coolant. The shroud defines an air passageway. The air passageway directs an air flow produced by the fan blade and motor in a path having a direction going into an inlet portal of the shroud and out of a discharge portal of the shroud. The first heat exchanger is coupled to the shroud and is in the path of the air flow. The second heat exchanger is coupled to the shroud and is in the path of the air flow. The fan blade and motor is completely disposed within the shroud.

Abstract: A fuel filter assembly employs a hand primer and a disposable filter cartridge mounted to a header. The filter cartridge has a filter element which defines an interior chamber for receiving the filtered fuel. The hand primer includes a diaphragm which cooperates with the header to define a reservoir and a valve plate having a plurality of orifices and an axial opening for providing fluid communication between an exit passage of the header and the reservoir and between the chamber and the reservoir, respectively. A first check valve is mounted in the opening and a second check valve is mounted in an axial bore in the first check valve. The first and second check valves are moveable between an open position for allowing flow through the orifices of the valve plate and orifices in the first check valve, respectively, and a closed position for preventing such flow.

Abstract: A compressor having an oil separator at a shell portion of a housing of the compressor. The oil separator is constructed by a front part 61 integral to a front housing 11 and a rear part 62 integral to a cylinder block 12. The oil separator has an oil separation chamber 1 formed between the front and the rear parts 61 and 62. The oil separator is formed integrally with oil separating passageway forming plates 67 and 68 which partially divide the separation chamber 63 to create a serpentine shaped passageway 66 which extends from an inlet 64a to an outlet 65 of the separation chamber. The passageway 66 is in communication with the crank chamber 15 via a oil return passageway 69 at a location adjacent its outlet.

Abstract: A hermetically sealed compressor includes a cylinder forming a compression chamber, and a piston reciprocally mounted in the cylinder for compressing gaseous refrigerant. A mixture of gaseous refrigerant and lubricating oil is conducted via a conduit arrangement to a suction muffler located upstream of the compression chamber. The conduit arrangement includes, at an inlet to the suction muffler, radially inner and outer tubes forming a channel therebetween. Gaseous refrigerant flows into the suction muffler through the inner tube. Lubricating oil traveling radially outwardly of the gaseous refrigerant enters the channel and is discharged from a downstream end of channel and thus does not enter the suction muffler.

Abstract: A liquid-sealed vane oscillator includes a housing defining a cavity corresponding to part of a virtual annulus centered around, and extending at least 180.degree. about, an axis of rotation and delimited by first and second ends. A vane is mounted rotatably within the cavity. The vane includes a first seal and a second seal carried with the vane and deployed so as to subdivide the cavity into a first chamber of variable volume between the first end and the first seal, a second chamber of variable volume between the second end and the second seal, and an intermediate volume between the first seal and the second seal. At least one port is provided in fluid communication with each of the first and second chambers. The oscillator also has an axial shaft, penetrating and extending from the cavity, which is mechanically coupled to the vane so as to allow exchange of mechanical power with an external device.

Abstract: A gas pulsation and noise reduction system for positive displacement blowers and compressors. A resonator is placed in one or both of the inlet and outlet conduits of the blower or compressor. The resonator is sized to damp out gas pulsations by providing a reflected wave 180.degree. out of phase with the gas pulsation in the associated conduit. Multiple resonators can be used in one or both conduits to dampen gas pulsations of different frequencies.

Abstract: A cover for a pump jack includes a main rear wall with two slots for engaging over a pair of shafts of the pump jack at the drive belt on the pulleys on the drive shafts. The rear cover portion includes a peripheral wall extending around the sides and top of the peripheral edge with the bottom of the cover panel being opened. A front panel portion manufactures a single piece or as multiple pieces fits over the rear cover panel with a lip engaging onto the peripheral wall to which it is connected by latches. A stiffener member extends across the rear wall and closes the slots. A similar stiffener member can be attached across the front panel portion. Both the rear panel and the front panel are manufactured from glass fibre reinforced resin allowing the product to be manufactured in lightweight. The front cover panel can therefore be readily removed to allow replacement of the belt.

Abstract: An apparatus is configured for mounting a blower motor into a blower housing. The blower housing has an interior region for receiving the blower motor. The apparatus comprises a top shell configured to surround a top portion of the blower motor and a bottom shell configured to surround a bottom portion of the blower motor. The top and bottom shells are configured to hold the blower motor in the interior region of the housing without a rigid connection between the blower motor and the blower housing. The top shell cooperates with the bottom shell to define an air intake manifold to provide flow of intake air to the blower motor.

Abstract: A paint spraying device has a housing with two halves and a hydraulic device mounted in the housing. The hydraulic device includes a valve system and a pump for conveying a medium to be sprayed. The pump is loaded by a hydraulic medium. A vertical plate flange has a first and second end and is connected by the first end to the hydraulic device. The second end of the vertical plate flange comprises a first support leg projecting from the housing. A drive motor is positioned in the housing for driving the pump and is connected to the vertical plate flange. The housing has at least one second support leg remote from the first support leg. The halves are fixedly connected to the hydraulic device.

Abstract: A security device in which a cap-shaped element is mounted covering essential functional and/or adjusting elements of a fuel delivery device. The cap-shaped element is connected to the parts of the fuel delivery device that it encloses in such a way that gaining access to the parts or to removing the cap-shaped element is only possible through destructive means and that when a particular destructive force is exceeded, a fracture occurs at a rated break point by means of which a functional or adjusting element or the defining wall that carries this element is fractured in relation to a fuel-carrying space of the fuel delivery device.

Abstract: A piston assembly comprising a piston sleeve having an interior wall, a piston carried in the piston sleeve, a cup seal carried by the piston which engages the interior wall of the piston sleeve, and a valve plate matingly adapted to receive the piston sleeve. A firm thermal-insulating barrier is disposed between the valve plate and the piston sleeve for reducing the heat flow from the valve plate to the piston sleeve.

Abstract: A fuel filter assembly of modular form is adapted to incorporate a lift pump or an automatic primer. The lift pump is mounted to the filter base by means of a lock ring. Fuel supplied to the filter base inlet is supplied to a rotary vane-type or gerotor pump which may be electrically activated from the vehicle console or a location remote from the fuel filter assembly. The lift pump regulates the fuel pressure to provide a sufficient fuel flow through the supply system and the filter for ultimate delivery to the fuel injection pump or engine. The pump/filter flow sequence is bi-directional and may be selected by the angular position of an adapter.

Abstract: A fluid compressor including a compression module driven by a prime over, a separator tank having a separation chamber, a scavenge flow connector having a T-shaped housing that is adapted to produce scavenge vacuum pressure to drain lubricant from a scavenge cavity when the fluid compressor is continuously running loaded.

Abstract: A compressor having a cam plate disposed in a crank chamber and mounted on a drive shaft. The cam plate is tiltable between a maximum inclined angle position and a minimum inclined angle position with respect to a plane perpendicular to an axis of the drive shaft according to a differential pressure in the crank chamber and in a cylinder bore. The cam plate varies the stroke of a piston based on an inclination thereof to control the displacement of the compressor. A supply passage connects a discharge chamber with the crank chamber to deliver the gas from the discharge chamber to the crank chamber. The supply passage has an inlet that is open in the discharge chamber. A control valve is disposed midway on the supply passage. The control valve adjusts the amount of the gas introduced into the crank chamber from the discharge chamber through the supply passage to control the pressure in the crank chamber. A filter is disposed at the inlet of the supply passage to filter the oil.

Abstract: An oil pickup device is provided which is adapted to replace the standard oil pump cover plate and pickup tube typically utilized for use with a conventional oil pump for an internal combustion engine. The oil pickup device comprises an oil pump mounting section having a front wall which complimentarily conforms with the mating surfaces of the pump housing to provide an oil seal and for segregating the discharge chamber of the oil pump, and an oil pickup section for extending into the oil contained in the engine supply reservoir formed within a conventional oil pan to provide a continuous supply of oil to the oil pump. The oil pickup device further includes an oil filter or screen positioned between the oil pump mounting section and the oil pickup section for filtering inlet oil to prevent particulate matter, such as dirt or metal shavings, from entering into the oil pump.

Abstract: The device of the current invention produces volumes of compressed air by utilizing a turbocharger, a compact combustion assembly, and a hydraulic power pack. The turbocharger includes a turbine and centrifugal compressor, each being interconnected using a pressure-lubricated bearing such that the turbine drives the compressor. Compressed air leaving the compressor is passed through a junction box containing a plurality of air distribution nozzles. The nozzles direct the compressed air either to a pressurized receptacle or back to the combustion assembly in order to provide a source of air for a combustion chamber. This device will economically obtain significant volumes of compressed air more efficiently than other known methods.

Abstract: An oil free compressor uses special structure to interface the engine and compressor. Special quieting structure is also disclosed, including an upward exhaust mechanism, to maintain quiet operation.

Abstract: A drive unit for driving an electrically-operated compressor mounted in an automotive vehicle is provided with a ventilation arrangement. The ventilation arrangement includes a casing having a vent hole defined therein. A filter having an air permeability and a water repellency is mounted on the casing so as to cover the vent hole. An elongated ventilation member is mounted on the casing so as to communicate with the vent hole and extends in a direction diverting from the direction in which the casing is splashed with water. The filter may be accommodated in the elongated ventilation member.

Abstract: Disclosed is a method and apparatus for the continuous remediation of a site contaminated with a hazardous substance. The remediation apparatus includes a material selectively permeable to the hazardous substance located at the site. Once isolated, the hazardous substance is removed to a remote vessel by mechanical means or by utilization of an gas-injection system. The invention also contemplates a valve configured to protect remediation apparatuses from detrimental overloadings of hazardous substances during a remediation procedure.

Abstract: The objects of the present invention are to remove the dust in a closed container, to keep the pressure in the closed container within a predetermined range, and to shorten the maintenance time of a vacuum pump system.The present invention provides a centrifugal dust collector 2 on main pipes which connects a furnace body 1, a mechanical press 9 and a dry pump 10, and a metal mesh dust collector 15 on a bifurcated pipe in a single-crystal semiconductor pulling apparatus. When the vacuum pump process begins, the metal mesh dust collector 15 collects amorphous silicon generated in the furnace 1. As the pressure in the furnace is reduced, the centrifugal dust collector 2 collects the dust particles instead. Since the gas flow rate increases as the vacuum state become higher, the critical diameter of collectable particles decreases, thereby improving the dust collection efficiency.

Abstract: A reduced noise radial piston pump with a driving motor for a controlled brake system. The noise reduction is primarily accomplished by locating and orienting the motor/pump bearings with respect to the pump pistons.

Abstract: An improved power steering pump integrates into a single assembly the pump (10), the reservoir (20) and a filtration system. The reservoir (20) includes upper and lower chambers (26, 24) and a primary filter (40) therebetween. The filtration system may also include a secondary filter (42) for providing filtration of fluid added through a filler device (31). The reservoir (20) may also include a bypass chamber (30) and a fluid bypass (66) with a bypass valve (68) for permitting fluid to bypass the primary filter (40) in the event the fluid exceeds a predetermined viscosity.

Abstract: An ambulatory volumetric pump apparatus includes a housing defining a channel therethrough having an inlet for receiving a fluid and an outlet for discharging a fluid, a pump operable to pump fluid through the channel, a motor for operating the pump in response to control signals, and a programmable microprocessor for selectively supplying control signals to the motor to cause the motor to operate. The programmable microprocessor is "programmed" by manually setting rotatable knobs having faces which extend through but are generally flush with the housing exterior surface. The knobs include indicia to provide a visual display of the setting of the knobs and thus of the parameters of operation of the pump. An under-pressure sensor is disposed after the inlet of the channel to detect a suction or vacuum in the channel and to signal the microprocessor if such condition is detected.

Abstract: A flooded compressor control system that comprises a flooded compressor (11), an inlet throttle valve (14) and a final filter (25) mounted separately from a separator vessel (23) wherein the inlet throttle valve (14) and the final filter (25) form a combined assembly, the final filter (25) further incorporates a minimum pressure valve (28) that controls the discharge of clean compressed gas from the final filter (25) resulting in a reduction in the number of pipe joints in the system.

Abstract: Pipings for joining pumps for delivering absorbent solution and refrigerant with an absorber and an evaporator are eliminated for minimizing the dimensions of the absorber or the evaporator, preventing leakage under pressure, and reducing heat loss and cavitation. Two pumps P2 and P3 for circulating and delivering the absorbent solution in a lower tank 21 are mounted in side-by-side relationship in a recess of a base 23 of the lower tank 21. The base 23 has a space therein for accommodating an impeller 36. The space forms a part of pump chamber communicated to a flow passage 37.

Abstract: The pump comprises three distinct series of pumping stages driven on a single shaft by the same motor. Between the first and second series of pumping stages, the liquid is diverted from the pump through a by-pass towards, for example, a filtering device for removing the liquid as many impurities as possible. Then, the filtered liquid is conveyed back to the second series of pumping stages of the pump where the liquid is pumped at high pressure before being conveyed through a by-pass outside of the pump and towards a treatment chamber, such as a chamber for reverse osmosis, nanofiltration, or the like. The permeate (filtered solution) is removed from the installation whereas the solute (concentrated solution) is, in large part, reconveyed towards a third series of pumping stages, at the discharge of which the liquid is mixed with the filtered liquid from the second series of stages and the mixture is then conveyed again towards the treatment chamber. This high yield system eliminates a second and third pump.

Abstract: A portable pump assembly is provided. The pump assembly includes a pump and various accessories that enable the pump or alternatively, the pump and a pouch containing a liquid for injection, to be fixed to various accessories without requiring modification of the pump box and without requiring specific fixing apparatus for each of the accessories used with the pump.

Abstract: A power unit housing a pump, comprising: a hydraulic oil tank having an approximately L-shaped configuration and including a pump housing portion which houses a hydraulic pump and an oil reservoir portion which is integrally formed with and arranged approximately perpendicular to the pump housing portion; an electric motor juxtaposed alongside the oil reservoir portion, the electrical motor operating the hydraulic pump through a direct coupling; and a switching valve for switching the supply and discharge flow of the hydraulic oil between the hydraulic pump and an external load, the switching valve is positioned in proximity to the electric motor. According to this arrangement it is possible to shorten the axial length of the hydraulic oil tank while maintaining the volume of the tank and it is possible to make the entire unit compact.

Abstract: A fluid dispensing system is provided which has first diaphragm pump means, a filter connected to receive the discharge of said first pump, and accumulator/second diaphragm pump means connected to receive the discharge of said filter. Hydraulic fluids pumped by cylinder/piston/stepper assemblies independently actuate each of the diaphragm pumps, providing accurate, controllable and repeatable dispense of the subject fluid.

Abstract: A compact getter pump, compatible with size limitations of portable apparatus is described. In one embodiment a getter device and a heating apparatus capable of heating getter elements to a desired temperature, are contained within a thermally insulating housing comprised of a plurality of nested thermally insulating shields with an open end. The open end of at least one of the shields is covered with a particle trap. In another embodiment, each of the nested thermally insulating shields is of a substantially cylindrical shape and is substantially coaxially disposed along an axis defined by the heating apparatus. In one embodiment a plurality of getter elements and a heating apparatus are enclosed by three nested evenly spaced cylindrical metal shields that have open ends and are coaxially disposed along an axis defined by the getter elements and the heating apparatus.

Abstract: An improved dual-stage pump system is provided for the accurate pumping and filtering of viscous fluids. Two hydraulically activated pumps are provided in series with a filter and reservoir disposed in-line between the two pumps. The reservoir acts as a source bottle for the second pump and allows the first pump to pump the viscous fluid through the filter at a rate independent of the dispensing rate of the second pump. By operating the first pump at a rate independent of the second pump, back pressure at the filter is avoided. Each hydraulically activated diaphragm pump is equipped with an improved diaphragm that is pre-formed to the geometries of the process fluid cavity thereby eliminating any inaccuracies in the operation of the pumps due to expansion of retraction of the diaphragm during pump operation.

Abstract: A fuel supplying apparatus comprising a fuel tank, a fuel pump, a pressure regulator and a fuel filter disposed in a fuel line connected between the fuel pump and the pressure regulator for filtering the fuel supplied from the fuel pump. The pressure regulator has an inlet port through which the pressure within the fuel tank is introduced into the diaphragm chamber of the pressure regulator is disposed between a fuel surface level and the ceiling of the fuel tank. The excess fuel discharge port is disposed in the vicinity of and in a facing relationship to a wall surface, which may be provided with a shock absorbing member, of a fuel pump mounting bracket, a sub-tank, pressure regulator holder or a barrier. The fuel filter has a hollow cylindrical configuration and the fuel pump together with a mounting bracket for supporting the fuel pump is housed within the hollow cylindrical fuel filter.