Abstract: An evaporator includes a refrigerant inlet header section, a refrigerant outlet header section, and a refrigerant circulation path connecting the two header sections. A refrigerant inlet-outlet member composed of a first plate, a second plate, and an intermediate plate is joined to the two header sections. The refrigerant inlet-outlet member has an inflow channel whose one end communicates with the refrigerant inlet of the refrigerant inlet header section and whose other end is opened to a rear edge of the refrigerant inlet-outlet member, and an outflow channel whose one end communicates with the refrigerant outlet of the refrigerant outlet header section and whose other end is opened to the rear edge. The first and second plates each have inflow-channel-forming and outflow-channel-forming outward swelled portions. Cutouts and a through hole are formed in the intermediate plate such that the inflow channel and the outflow channel cross each other.

Abstract: A thermal energy exchanger assembly (100) includes an exchanger housing (138). The exchanger housing (138) houses a pair of core support assemblies (174) formed of individual core supports (200). The core supports (200) are coupled together so as to form apertures 228. Core tubes (180) are received within the apertures (228). A fresh airstream (122) is made to flow through the core tubes (180) while a stale airstream (114) is made to flow between and around the core tubes (180). In this manner, an exchange of thermal energy occurs between the fresh airstream (122) and the stale airstream (114).

Abstract: The invention relates to a fixing device (8) for a expansion valve (4) of a motor vehicle air-conditioning system (1), said expansion valve (4) being connected to two lines (5, 6). The two lines (5, 6) are positioned in relation to each other by means of a line positioning element (7) which is embodied as a sheet metal stamped part, said line positioning element comprising two slits which are used to receive the lines. The expansion valve (4) can be arranged on the housing (2), with the aid of the line positioning element (7), and can be fixed in an at least rotationally fixed manner, wherein one part of the motor vehicle air-conditioning system (1) is arranged.

Abstract: A structure to connect a refrigerant pipe and an air conditioner having the same, the connecting structure enabling a refrigerant pipe to be easily connected to an indoor unit or an outdoor unit of an air conditioner and including a refrigerant pipe through which refrigerant flows, a socket part connected to one end of the refrigerant pipe, and a coupling nut coupled to an outer circumferential surface of the socket part, wherein, a socket part is provided with a grip-ring allowing the refrigerant pipe to move in a first direction in which the refrigerant pipe is coupled to the socket part and preventing the refrigerant pipe from moving in a second direction in which the refrigerant pipe is separated from the socket part, and at least one O-ring configured to prevent refrigerant from leaking at the socket part.

Abstract: What is disclosed herein deals with low to medium pressure, high temperature, all ceramic, air-to-air, indirect heat exchangers, novel ball joints, high load-bearing ceramic tube sheets, and tube seal extenders for ceramic tubes that are useful in such heat exchangers. Also disclosed are new and novel systems used in new and novel industrial processes such as chemical processing, sludge destruction and the production of particulates such as, for example, carbon black. Systems utilizing several heat exchangers are also disclosed.

Abstract: A low maintenance condenser for using in commercial refrigeration systems comprising a single metallic flat section having two or more integrally formed pipes for the flowing of a refrigerant fluid and a flat longitudinal heat dissipation section at each side of a pipe, wherein the first end of the first pipe comprising the refrigerant fluid inlet and the second end of the last pipe comprising the fluid outlet, and wherein the first end of the next pipe is connected to the second end of the previous pipe, successively until the last pipe, in order to form a single circuit having a single refrigerant fluid inlet and a single refrigerant fluid outlet.

Abstract: The invention relates to a heat exchanger device to be introduced, along a longitudinal direction L, into a sewage pipeline extending along the longitudinal direction L, with a heat exchanger wall, comprising:—a first wall portion designed to make contact with sewage,—a second wall portion, spaced from the first wall portion, which is designed to make contact with the sewage pipeline, wherein the first wall portion and the second wall portion are arranged in a manner spaced from each other at least in some part(s) such that a heat exchanger chamber is formed between the first wall portion and the second wall portion, and—a third wall portion connecting the first wall portion and the second wall portion, the third wall portion at least in some part(s) forming a first supply line that can be flown through by a heat exchange medium, wherein the heat exchanger chamber is hydraulically connected to the first supply line via a first connection region,—a fourth wall portion connecting the first wall portion and the

Abstract: A zone-control unit for use in a heating, ventilation, and air conditioning (HVAC) system, the zone-control unit includes a heat exchanger, an inlet piping assembly coupled with the heat exchanger for supplying fluid to the heat exchanger, an outlet piping assembly coupled with the heat exchanger for receiving fluid from the heat exchanger, a bracket that maintains the inlet piping assembly and the outlet piping assembly in positional relationship, and an ancillary component coupled with the heat exchanger.

Abstract: A hose and method of forming the hose are disclosed. The hose includes a first end portion for coupling the hose to a first component and a second end portion for coupling the hose to a second component. The first end portion and the second end portion are connected by a length of the hose. The hose has two refrigerant barrier layers extending along its length between the first end portion and the second end portion, and a tubular layer surrounding the second refrigerant barrier layer. At least one of the refrigerant barrier layers is a metal barrier layer. The length of hose has a flexible hose section and a substantially inflexible hose section. The flexible hose section is located between the substantially inflexible hose section and one of the end portions of the hose.

Abstract: A heat exchanger includes a plurality of tubes, a header tank coupled to the plurality of tubes, and a connector coupled to the header tank. The connector includes a female joint part that is to be coupled to a male joint part of an external pipe and a tubular part that extends from the female joint part and has a closed end on a side opposite to the female joint part. The connector is coupled to the header tank such that a side wall of the tubular part is located on an outer periphery of the header tank.

Abstract: An evaporator unit includes an evaporator configured to evaporate a refrigerant, and a capillary tube configured to decompress the refrigerant. The capillary tube has two longitudinal ends bonded to the evaporator. At least one position of a middle portion between the two longitudinal ends of the capillary tube is fixed to the evaporator by press-contacting the evaporator. Therefore, it can prevent a crack from being caused at the bonding portions of the two longitudinal ends of the capillary tube.

Abstract: A heat pipe and a method for forming the same are provided. The method includes: defining a closed end, a closed portion, and a contact section in sequence along a heat pipe to be processed; closing the opening of the closed end and the passage of the closed portion so as to finalize the heat pipe; and cutting axially the contact section into a plurality of equal parts, bending the equal parts outward to assume a divergent shape, thereby providing the contact section with an area for contact with a heat-generating source. Heat is directly transferred from the heat-generating source to the heat pipe via the contact section, thereby enhancing heat dissipation.

Abstract: An aluminum heat exchanger having increased resistance to galvanic corrosion. The exterior of one end of the aluminum tube or connector is coated with a metal or metal alloy. This end is brazed onto a copper or copper alloy inlet or outlet tube. The metal or metal alloy coating inhibits the formation of galvanic corrosion.

Abstract: In one aspect, an assembly to provide thermal cooling includes a first member having a first channel configured to receive a cooling fluid, a second member having a second channel configured to receive the cooling fluid and a first plurality of hollow and flexible conduits connecting the first and second members. Each of the first plurality of hollow and flexible conduits is configured to provide a path for the cooling fluid to flow between the first and second channels.

Abstract: According to the invention, a heat exchanger is disclosed. The heat exchanger may include a first tube sheet, a second tube sheet, a heat exchange tube, a header, and a coupling. The heat exchange tube may be disposed at least partially between the first tube sheet and the second tube sheet, and may also be made of a first material. The header may be made of a second material. The coupling may include a first end and a second end. The first end may be made of the first material, and the second end may be made of the second material. The first end may be operably coupled with the heat exchange tube, and the second end may be operably coupled with the header.

Abstract: A heat exchanger for an air conditioning circuit of a motor vehicle, comprises a body defining a central duct having an axis and a plurality of peripheral ducts surrounding the central duct and at least one connector defining a first port fluidically connected to the central duct and a second port fluidically connected to the peripheral ducts, so that the central duct and the peripheral ducts are fluidically insulated. In particular, the connector comprises a tubular portion fluid-sealingly housed within the central duct and fluidically connected to the first port and defines a chamber surrounding the tubular portion and fluidically connected between the peripheral ducts and the second port.

Abstract: A method and apparatus particularly suited to the manufacture and assembly of cage-like, substantially cylindrical structures made of long, slender tubular components which, by themselves, are not self-supporting, employs an exo-skeleton structure to assemble cage-like, tubular structures in pie-shaped, longitudinal segments while in a horizontal or vertical position utilizing longitudinal or circumferential attachments. The apparatus comprises at least two segments which permit construction of subassemblies of the cage-like, tubular structure and their transportation, if necessary, to a remote site where they may be finally assembled.

Abstract: Connection element for connecting a heat exchanger element of a tubular heat exchanger with at least one product-carrying pipe to a flow system, where the connection element has a through hole, and a flow separation edge is formed on the circumference of the through hole.

Abstract: A reciprocating film type evaporator for solvents and other chemicals which eliminates the need for a large powerful motor, and other associated equipment such as rotary gaskets, by using reciprocation, versus 360 degree rotation.

Abstract: According to a preferred embodiment, an improved method and apparatus for manufacturing tube and fin heat exchangers that includes a step for reducing the outer diameter of stock tubing to a value well below nominal prior to bending the tubing into hairpins. The reduced diameter increases the stiffness of the resultant hairpins and allows for efficient lacing of the heat exchanger fins and end plates. The method uses pre-size rollers that are adjustable for reducing the diameter of the tubing. The invention also includes a hairpin and heat exchanger manufactured according to the method.

Abstract: An apparatus for plugging a bore of a tube sheet, the apparatus includes cantilevered members that project radially outward from a body on the inner surface of the tube sheet. Slots can be drilled into a tube the projects into the bore and the cantilevered members set into the slots. The cantilevered members can slide radially outward from within the body, or can be pivotingly attached on an end of the body. One end of a bolt threadingly attaches to the body, and attaches on its other end to a nut circumscribing the tube sheet bore on its outer surface. A deformable collar circumscribes the bolt between the body and nut and provides a seal within the tube sheet bore. The apparatus can also be used to plug bores that do not include tubes.

Abstract: A regenerator core for use in a gas turbine regenerator has integral manifold openings formed in the tube plates used to make up the core and has special reinforcing elements which provide high pressure containment in critical portions of the plate-and-fin heat exchanger construction. The reinforcing elements include a series of hoops of U-shaped cross section which are used to bridge the juncture lines of the heat exchanger manifolds. An outer channel region of the hoops is provided with a reinforcing strip of gusset material. The hoops with their reinforcing strips provide structural reinforcement in the region between the manifolds and the conventional side bar reinforcing members in the central core section.

Abstract: The present invention provides a pipe for a heat exchanger. The header includes a tube insertion hole for insertion of a tube, a filler metal groove formed in a length direction on one side or both sides at a point separated from the tube insertion hole, and a filler metal that flows down following the tube and the periphery where the tube and tube insertion hole come in contact. Filler metal is inserted in the filler metal groove so as to enable brazing fusion. A lead groove is formed between the tube insertion hole and filler metal groove and provides a pathway so as to enable smooth flow of the filler metal, and so that molten filler metal can flow smoothly into the fused areas between the tube and header pipe in desired locations and amounts.

Abstract: A mounting arrangement for a heat exchanger in a vehicle includes a bracket having a main body. A first portion is secured to the heat exchanger and a second portion includes a mounting feature adapted to be secured to another component of the vehicle. A foot is formed on the first portion of the bracket. The foot defines an interface surface brazed to the heat exchanger in an installed position.

Abstract: The present invention comprises a heat exchanger and method for sealing a heat exchanger tube to a header of the heat exchanger. The method comprises melt-bonding the tube to a header of the heat exchanger to form a bond and sealing the bond with a sealant material to form a seal.

Abstract: A fitting assembly for connecting an oil cooler assembly to a radiator assembly in a vehicle cooling system includes a radiator having an inlet header tank with an outer wall. The outer wall includes an inlet cooler opening and an outlet cooler opening disposed in the outer wall. The inlet cooler opening is disposed about an inlet axis and the outlet cooler opening is disposed about an outlet axis. An oil cooler having an inlet manifold and an outlet manifold is disposed within the header tank. A fitting interconnects the oil cooler and the header tank of the radiator. A pair of tracks are integrated with the outer wall and are disposed within the header tank. A spring clip extends between the tracks and the fitting for retaining the fitting to the header tank.

Abstract: A radiator includes a supporting part including a plurality of through openings formed therein and a plurality of cooling tubes, each of the cooling tubes received in at least one of the through openings formed in the supporting part, each of the cooling tubes having a generally U-shaped configuration, wherein a first one of the cooling tubes includes a first helical portion having a first pre-determined depth and a second one of the cooling tubes includes a second helical portion having a second pre-determined depth different from the first pre-determined depth.

Abstract: A system has a housing and a rigid fluid pipe fixedly mounted inside the housing to carry cooling fluid, A first connection element is attached to an end portion of the rigid fluid pipe, and a heat-generating assembly is mounted inside the housing. The heat-generating assembly has a flexible fluid pipe. A second connection element is attached to an end portion of the flexible fluid pipe, where the first and second connection elements are removably connectable together and provide an automatic sealing mechanism when the first and second connection elements are disconnected.

Abstract: Fixed to the peripheral wall of a header 2 of a unit-type heat exchanger 1 is a receiver connecting block 6 having channels 31, 32 for causing the interior of the header 2 to communicate with the interior of a liquid receiver 7 therethrough. The block 6 and the liquid receiver 7 have respective fixing portions 32, 36 and respective contact faces 22a, 36a each provided on the fixing portion. The outer peripheral surfaces of the fixing portions 22, 36 have respective contours of the same shape and the same size. The liquid receiver 7 is fixed to the block 6 with the contact faces 22a, 36a of the fixing portions 22, 36 in intimate contact with each other. A tubular seal member 42 having rubber elasticity is liquid-tightly fitted around the fixing portions 22, 36. The seal member 42 has an inner shape smaller than the contours of the outer peripheral surfaces of the fixing portions 22, 36 and is fitted as elastically deformed around the fixing portions 22, 36.

Abstract: A plurality of first joint tubes 40 connected to a plurality of heat transfer tubes 3 and a plurality of second joint tubes 50 provided at a header 5B are connected to each other at joints J. The joints J include at least one slide joint Ja at which respective ends of the first and the second joint tubes 40 and 50 are fitted to each other slidably in a predetermined direction. The joints J further include at least one butt joint Jb at which an end of either one of the first and the second joint tubes butts against a sealing surface provided at the other one of the first and the second joint tubes. The butt position of the sealing surface and the end is variable in a direction crossing the predetermined direction. With this arrangement, the influence of an error in the arrangement of the first and the second joint tubes 40 and 50 is reduced, so that the header 5B is properly connected to the heat transfer tubes 3 detachably, and the maintenance of the heat exchanger HE is facilitated.

Abstract: A support structure for flat-plate heat pipe, including a main body and a fitting body. The fitting body has at least one open side and a first side section connected with the open side. The first side section has a capillary structure formed on a periphery of the first side section. The first side section and the open side together define a space for fixedly fitting the main body therein. By means of the capillary structure of the first side section of the fitting body, the circulating rate of a working fluid flowing within the flat-plate heat pipe is increased to achieve better heat dissipation effect and better thermal uniformity.

Abstract: A heat exchanger that includes a collecting tank having a collecting tank edge, a tube plate including a tube plate edge, and a seal arrangement with a seal between the collecting tank and tube plate. The heat exchanger further includes a seal support frame, and the seal is arranged on the seal support frame and the seal is inlaid together with the seal support frame between the tube plate edge and the collecting tank edge.

Abstract: A connection block employs a support block with two parallel through holes that pass through parallel first and second flat block surfaces. First and second insert pipes have elongate portions and flanges. The elongate portions press-fit into the connection block and the flanges, not at pipe ends, abut against the first flat surface of the connection block when the pipes are installed. Upon installation, the ends the elongate portions of the pipes are formed into a flange by flattening the end against the second connection block surface. The junctures of the elongate portions and the first flanges form a flange radius that contacts a radius of the support block when the pipes are installed into the block. The elongate portions residing within the first and second through holes make a full contact fit against the inside diameters of the through holes. The flanges are perpendicular to the elongate portions.

Abstract: A soldered heat exchanger, in particular a condenser for motor vehicles which has at least one collector tube, and a flange which is secured to the collector tube and which is used to receive connection tubes. The flange can be fixed and soldered to the collection tube by one or two supports.

Abstract: An air-to-air aftercooler may include at least one tube body configured to direct a flow of charged air, wherein the at least one tube body includes a first material. The air-to-air aftercooler may also include a header assembly coupled to ends of the at least one tube body. The header assembly may include a second different material.

Abstract: An evaporator comprises tubes, configured for coolant flow, stacked in regularly spaced relation to one another, each of the tubes formed by coupled tube plates. Also comprising a tank in fluid communication with the tubes at an upper or lower side; inlet and outlet end-plates which respectively have an inflow part and an outflow part at an upstream side of coolant flow and positioned at respective end sides of the stacked tubes; and inlet and outlet manifolds in fluid communication with the tank and coupled to the inflow and outflow parts to define a coolant flow passage. The outlet manifold has a coolant movement preventing part isolating a rear portion from the coolant flow passage and comprises a closed space formed by joining the outlet end-plate and the outlet manifold to prevent formation of a dead zone where the coolant from the tank flows into a downstream side of the outlet manifold and is whirled therein.

Abstract: A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be readially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.

Abstract: A spacer includes a plane portion and at least one positioning portion. The plane portion is interposed between two pipe arrays stacked one another. Each of the two pipe arrays is formed by arranging at least one pipe along a plane which crosses a stacking direction of the two pipe arrays. The at least one positioning portion positions the at least one pipe in at least one of the two pipe arrays on the plane portion.

Abstract: A method for assembling a plurality of tubes to a tubesheet. A first end of each of the tubes is situated over a corresponding support rod that extends from a pattern block of the fixture. A first end of a plurality of locating members is inserted into a second end of each of the tubes such that a second end of the locating member extends from the tube second end. The tubesheet is then slid over the locating members and tubes such that each of a plurality of holes in the tubesheet receive corresponding ones of the tubes.

Abstract: A method, system and/or apparatus for reducing the pressure drop in a heat exchanger. In one aspect, the invention can be a heat exchanger comprising: a shell forming a cavity, the shell comprising an inlet for introducing a shell-side fluid into the cavity and an outlet for allowing the shell-side fluid to exit the cavity; a tube bundle for carrying a tube-side fluid, the tube bundle located in the cavity along a longitudinal axis; at least one stabilizing plate positioned within the cavity and arranged in a substantially transverse orientation, the stabilizing plate comprising a lattice structure having openings, wherein tubes of the tube bundle extend through the openings; and wherein the openings of the lattice structure are sized and shaped so that the tubes contact the lattice structure and a portion of the openings remain unobstructed by the tubes, thereby allowing axial flow of the shell-side fluid through the stabilizing plate.

Abstract: A condenser assembly for an appliance is provided. The condenser assembly can include a horizontally extending condenser coil assembly that has a plurality of supporting connectors that are arranged at an angle to the flow direction of cooling air. Cooling air is drawn through the refrigerator and across a length of the condenser coil by an air mover. Additionally, a baffle works in conjunction with the air mover to direct cooling air through the condenser coil and connectors.

Abstract: What is disclosed herein deals with low to medium pressure, high temperature, all ceramic, air-to-air, indirect heat exchangers, novel ball joints, high load-bearing ceramic tube sheets, and tube seal extenders for ceramic tubes that are useful in such heat exchangers. Also disclosed are new and novel systems used in new and novel industrial processes such as chemical processing, sludge destruction and the production of particulates such as, for example, carbon black. Systems utilizing several heat exchangers are also disclosed.

Abstract: A melt cooler and valving system for an underwater pelletizer has a diverter valve that facilitates multiple modes of melt processing. The cooler has a cooler inlet line that conveys the melt to the cooler, and a cooler outlet line that conveys the cooled melt from the cooler. The diverter valve is configured to convey the melt to and from the cooler during a cooling mode of operation, to convey the melt around the cooler during a bypass mode of operation, and to drain the melt from the cooler and the diverter valve during a drain mode of operation. The diverter valve is compact and therefore contains a minimum of product inventory. The valve is streamlined and direct in its bypass mode, and includes a drain capability to allow for faster, easier cleaning of the process line, which in turn provides a fast changeover time with less lost product.

Abstract: Heat exchanger for thermo boiler 1 with a tube bundle 6 using solid fuel in particles constituted from an inner furnace 7 and a double wall jacket connected from the tube bundle 6 characterized by the fact that space 14 over the inner furnace 7 and the tube bundle 6 is divided from a slab 13, that tubes 6 which cross said slab 13 in openings 15 are rigidly fixed to said slab 13, that at least a bar 10, 11 which can be controlled from outside crosses the slab 13 and the double wall jacket 20 on at least one side, that said bar/s 10, 11 bring/s at least two scraping plates 8 and 9, of which an at least intermediate one positioned on one side of said slab 13 and at least an other one from the opposite part of slab 13, of which at least one positioned at the end of tubes 6.

Abstract: A liquid cooling unit includes a pump body. A nipple is formed in the pump body. The nipple defines an outflow passage for coolant. An elastic tube has the tip end receiving insertion of the nipple so that the elastic tube is coupled to the nipple. A fixation member defines a groove supporting the nipple inside the elastic tube over a first predetermined length from the tip end of the nipple. The groove receives the elastic tube alone ahead of the tip end of the nipple over a second predetermined length from the tip end of the nipple.

Abstract: A shield for placement around burner ports in a hot air furnace for reducing turbulence in the flow of secondary combustion air entering a heat exchanger. The shield also provides for intercepting moisture that condenses along the walls of the vertically oriented heat exchanger. The heat exchanger is part of a furnace. The drip shield includes a plate having a longitudinal axis and a plurality of through-openings placed in the plate along and/or parallel to its longitudinal axis. The through-openings are spaced apart so as to be positioned between and aligned with burner ports and respective heat exchanger tube inlets of the heat exchanger. The plate is preferably profiled to have a peak to encourage condensate run-off with the plurality of through-openings being placed along or generally parallel to the peak of the plate.

Abstract: A refrigerant leak-preventive structure in a heat exchanger is described. The refrigerant leak-preventive structure includes a tube group having refrigerant leak-preventive grooves recessed at ends of the fin-tubes group, and headers having refrigerant leak-preventive projections formed by double injection molding solution introduced into and cooled in the refrigerant leak-preventive grooves when being coupled with the both ends of the tube group by a double injection molding.

Abstract: In a heat exchanger, a core portion includes a plurality of plate fins each shaped like a flat plate and a plurality of tubes in which a fluid flows and each of which is inserted into each of the plate fins to be mechanically bonded thereto. Further, an end portion in a longitudinal direction of each of the tubes is bonded to a header plate which constructs a part of a header tank. The manufacturing method for this heat exchanger includes inserting the tube into the plate fins; expanding the tube to attach the plate fins; connect the tube into the header plate; and vibrate the tube with respect to the plate while applying a load to the tube in the direction of the header plate.

Abstract: A micro-channel heat exchanger module is respectively connected to a compressor and an expansion device. The micro-channel heat exchanger module includes a heat transfer tube module and a block. The block has a working fluid inlet channel, a working fluid outlet channel, a working fluid distribution chamber, a plurality of working fluid outlet openings, and a plurality of working fluid inlet openings. The working fluid inlet channel is connected to one of a compressor and an expansion device. The working fluid distribution chamber communicates with the working fluid inlet channel. The working fluid outlet openings communicate the working fluid distribution chamber with the heat transfer tube module. The working fluid inlet openings communicate the heat sink with the working fluid outlet channel. The working fluid outlet channel is connected to the other one of the compressor and the expansion device.

Abstract: A connection block employs a support block with two parallel through holes that pass through parallel first and second flat block surfaces. First and second insert pipes have elongate portions and flanges. The elongate portions press-fit into the connection block and the flanges, not at pipe ends, abut against the first flat surface of the connection block when the pipes are installed. Upon installation, the ends the elongate portions of the pipes are formed into a flange by flattening the end against the second connection block surface. The junctures of the elongate portions and the first flanges form a flange radius that contacts a radius of the support block when the pipes are installed into the block. The elongate portions residing within the first and second through holes make a full contact fit against the inside diameters of the through holes. The flanges are perpendicular to the elongate portions.