Abstract: A part of a gasket that conducts electricity across the otherwise nonconducting gasket. Versions of the insert provide an electrical connection when installed even if the parts sealed by the gasket deflect, and do not deform under compression due to their resilient nature. The gaskets can be used in pipe joints, among other uses, resulting in a pipe joint that conducts electricity between the pipe spigot and the socket of a pipe or fixture even if a deflection event occurs.

Abstract: A fluid connector assembly comprising a reversible connector body having female and male end portions. The male end portion having an outer diameter smaller than the outer diameter of the female end portion. The female end portion including an internal bore extending through the female end portion from an annular opening to an inner seat. The male end portion including an internal bore extending from an abutment face at a head end of the male end portion to an opening at the female end portion inner seat. A first tube having a concave flared end installed on the inner seat of the reversible connector body engages a spherical/convex flared end of a second tube installed on the abutting face of another reversible connector body when the male end portion of the another reversible connector body is installed in the female end portion of the reversible connector body.

Abstract: An electrically isolating gasket is disclosed wherein a coating layer is disposed on at least one conductive surface, and in some embodiments, on all surfaces or at least all of the conductive surfaces. The electrically isolating gasket includes a core gasket component, a ring seal component, and a non-conductive inner seal component. The coating layer can be, for example, polyimide, polyamide, ceramic, and aluminum oxide.

Abstract: In a jet pump measurement pipe repair method according to the present embodiment, a breakage part of a measurement pipe horizontally fixed to a lower part of a jet pump provided in reactor water in a reactor pressure vessel is repaired. The method has: a step of cutting and removing the measurement pipe including the breakage part; a step of retaining a connection pipe for connecting the remaining measurement pipe on the jet pump by means of a clamp; and a step of connecting ends of the remaining measurement pipe by means of the connection pipe.

Abstract: A method for forming a fluid tight seal is disclosed. The method may make use of a first component having a first sealing surface, and a second component having a second sealing surface. The method may further involve coating one of the first and second sealing surfaces with a metallic film layer adapted to transform into a liquefied metallic layer when a temperature of one of the first and second surfaces exceeds a melting temperature of a metal used to form the metallic film layer. Once it becomes liquefied, the liquefied metallic layer forms a pressure-tight seal between the sealing surfaces.

Abstract: A method of forming a leak tight connection between a pipe and a port made of different metals is described. A leak tight connection between a pipe made of a first metal and a port made of a second metal is also described.

Abstract: A connecting block includes a first member having a flow header extending from a sealing surface, a planar end face oppositely directed with respect to the sealing surface, and a perimeter wall angularly oriented with respect to the sealing surface. A second member is slidably received within the perimeter wall of the first member and has a flow member receiving bore axially aligned with the flow header. A bonding zone is created by heating both the first and second members until the planar end face and the planar interior face join together to create a physical connection between the first and second members. A material of the second member is corrosively sacrificial with respect to a material of the first member.

Abstract: A coupling apparatus that may have a first component having a first sealing surface and a second component having a second sealing surface. The first and second sealing surfaces are in facing relationship with one another when the first and second components are coupled together. One of the first and second sealing surfaces has a metallic film layer that transforms into a liquefied metal layer when the metallic film layer is exposed to a temperature that exceeds a melting temperature of a metal from which the metallic film layer is formed. The liquefied metal layer forms a seal between the sealing surfaces.

Abstract: A T-shaped pipe fitting element comprises a main tubular branch having first and second ends for connection to first and second pipe fitting sections of an auxiliary circuit, respectively, and a lateral branch having an axis which is at an angle to the axis of the main branch, and a free end for connecting to a third pipe fitting section of the auxiliary circuit. The first, second, and third pipe fitting sections each have different functions. One supplies the pipe fitting element with a first fluid at a high temperature, another supplies a second fluid to the pipe fitting element, at a lower temperature than the first fluid, and the third discharges a mixture of the first and second fluids. The pipe fitting sections consist of austenitic stainless steel. The T-shaped pipe fitting consists of stainless martensitic steel with improved thermal endurance properties.

Abstract: A tubular assembly comprising a first iron based tubular having a first non-cladded inner surface; and a second iron based tubular having a second non-cladded inner surface, wherein the first tubular is connected to the second tubular using a non-iron based bonding material. Preferably, the non-iron based bonding material has a lower crack growth rate than the iron based tubulars.

Abstract: The invention provides a method of making a component from first and second parts which are joined in a welding process wherein a laser beam is transmitted in a direction from a laser source and at least partly into a gap. The gap is made between edges of the component, and to enable a faster laser welding process, the laser has a focus point size which is at least of the size of the gap. To enable better control of the width of the gap, the invention further provides a method and components wherein one part is formed with a neck which extends into a complementary socket of the other part to prepare the parts for the welding process. The invention in particular concerns welding of brass.

Abstract: An apparatus according to which the apparatus includes a pair of connected arcuate members for clamping around a pipe, with each arcuate member including at least one protrusion. The arcuate members have a first material hardness and at least a portion of the at least one protrusion has a second material hardness that is greater than the first material hardness so that the portion penetratingly engages the pipe when the arcuate members are clamped around the pipe.

Abstract: Sealing systems for high pressure applications that provide electrical isolation between joined elements as well as enhanced resistance to leakage of media during a fire. High pressure sealing is accomplished using a metallic core to which an electrically isolating material is bonded on either or both sides. Sealing is achieved through a dielectric sealing element, such as a spring-loaded polytetrafluoroethylene (PTFE) ring. Flanges of the joint may be bolted together with the seal interposed therebetween, and the flanges bolted together. In the event of a fire, heat may be generated that is at a high enough temperature to burn away the isolating material and PTFE ring. Systems of various embodiments provide a metal core backup seal and a compression limiter, which, respectively, prevent the media from leaking from the joint and maintain bolt load at the flanges.

Abstract: A fitting for connecting pipes together. The fitting includes a press-fit connection including a ring-shaped seat configured to receive at least one of sealing and holding elements. The fitting is configured to be sealingly connected to an inserted pipe end. A threaded connection is configured to be connected to a pipe by a thread on the threaded connection. The fitting is a single piece and is devoid of weldments.

Abstract: A drill string comprises a first drill string member having a male end; and a second drill string member having a female end configured to be joined to the male end of the first drill string member, the male end having a threaded portion including generally square threads, the male end having a non-threaded extension portion coaxial with the threaded portion, and the male end further having a bearing surface, the female end having a female threaded portion having corresponding female threads, the female end having a non-threaded extension portion coaxial with the female threaded portion, and the female end having a bearing surface. Installation methods, including methods of installing instrumented probes are also provided.

Abstract: An apparatus and method according to which the apparatus includes a pair of connected arcuate members for clamping around a pipe, with each arcuate member including at least one protrusion. The arcuate members have a first material hardness and at least a portion of the at least one protrusion has a second material hardness that is greater than the first material hardness so that the portion penetratingly engages the pipe when the arcuate members are clamped around the pipe.

Abstract: A first flange and a second flange are superposed and fastened with a bolt and a nut in a fastening operation, to implement a fastening structure used at temperature lower than atmospheric temperature for the fastening operation. Assuming that the first flange has a thickness L1 and a coefficient of linear expansion ?1, the second flange has a thickness L2 and a coefficient of linear expansion ?2, superposed first flange and second flange have a thickness L, and the bolt has a coefficient of linear expansion ?, a relation of L·??L1·?1+L2·?2 is satisfied, i.e. heat shrinkage of the bolt is not smaller than the total heat shrinkage of the first and second flanges. Thus, impairment of sealing property due to heat shrinkage is avoided at a flange junction used at low temperature.

Abstract: A pipe fitting has a body with an internally threaded bore and at least one female starter thread. The at least one female starter thread is disposed either within the bore or immediately outside of the bore. The starter thread is axially aligned with the bore threads. The starter thread is made from a material which is stronger than the material from which the bore threads are made. The starter thread most proximate to the threads of the internally threaded bore has a pitch diameter which is at least two percent greater than the pitch diameter of the most proximate thread within the internally threaded bore.

Abstract: A pipe fitting has a body with an internally threaded bore and at least one female starter thread. The at least one female starter thread is disposed either within the bore or immediately outside of the bore. The starter thread is axially aligned with the bore threads. The starter thread is made from a material which is stronger than the material from which the bore threads are made.

Abstract: A corrosion-resistant threaded connection including a first tubular member having an outer metal tube of corrosion-prone material and an inner metal lining of corrosion-resistant material, the first tubular member forming a first pin connection having a nose portion comprising a ring of corrosion-resistant material secured, e.g.

Abstract: An insertable gasket is made of a substantially cylindrical heat resistant metal and is formed into a configuration having raised and recessed portions formed continuously and alternately as viewed longitudinally and cross-sectionally.

Abstract: A coupler for joining an aluminum conduit to a steel or stainless steel conduit and which includes a main body which is formed from a first layer of aluminum and a layer of steel or an iron-chromium alloy which are explosively welded together, and wherein the main body has a first aluminum surface, and an opposite, second steel or iron-chromium alloy surface, and wherein the aluminum conduit is welded to the first aluminum surface, and the steel or stainless steel conduit is welded to the second steel or iron-chromium surface.

Abstract: A coupler for joining an aluminum conduit to a steel or stainless steel conduit is described and which includes a main body which is formed from a first layer of aluminum and a layer of steel or an iron-chromium alloy which are explosively welded together, and wherein the main body has a first aluminum surface, and an opposite, second steel or iron-chromium alloy surface, and wherein the aluminum conduit is welded to the first aluminum surface, and the steel or stainless steel conduit is welded to the second steel or iron-chromium surface.

Abstract: A percussive drilling component includes a cylindrical male screw thread formed of a steel material. The thread includes thread crests and thread roots interconnected by thread flanks. To protect the thread against corrosion, the thread is coated with a material having a higher electrode potential than the steel material. The coating is situated at least in regions located radially inwardly of the thread flanks. The male screw thread can be attached to a female screw thread of another percussive drilling component, the female screw thread also being coated with the material.

Abstract: A coupling assembly for use in a loading adapter of a gasoline tanker trailer. The coupling includes an aluminum coupling body and a wear resistant bronze sleeve. The wear resistant bronze sleeve provides a durable surface for receiving latches. The sleeve does not bond to the coupling body, but rather is constrained thereto by physical interference.

Abstract: A hydrostatic rotary union has a shaft with an axial passage therethrough received within a housing having a radial passage in fluid communication with the axial passage. The shaft and housing have a radial clearance between them which establishes a squeeze film bearing and seal, when in use. End annuluses receive the oil establishing a squeeze film bearing and provide a return path to a supply source. The inner circumferential portion of the housing interfacing with the shaft is preferably of an anti-seizure material, such as bronze. Moreover, the housing and shaft are of materials of different coefficients of thermal expansion, such that excessive heat generated at the interface between the housing and shaft will cause the housing to expand away from the shaft.

Abstract: A corrosion-resistant threaded connection including a first tubular member having an outer metal tube of corrosion-prone material and an inner metal lining of corrosion-resistant material, the first tubular member forming a pin connection having a nose portion comprising a ring of corrosion-resistant material secured, e.g.

Abstract: A pipe couple is shown for connecting two pipelines of different materials together in a well environment which prevents deterioration of the pipe due to galvanic action. The couple achieves its purpose by coating the interior of the more noble pipe section with a wear-resistant, non-conductive coating which prevents electrolytic action between the two dissimilar metals. It also achieves high pullout resistance while maintaining minimum outer dimensions to facilitate use of the couple in all types of wells including oil, gas and waste injection wells.

Abstract: A fuel distributor pipe (1) which can be subjected to a high internal pressure loading includes at least one connecting arrangement (12) serving for releasably connecting a branch pipe (3) and having a connecting bore (5) which extends radially through the wall of the distributor pipe and which has an inner portion (8) and an adjoining, outer portion (9) which enlarges in a hollow-conical configuration, a screwthreaded socket (12) which is connected to the distributor pipe and whose internal bore (15) extending therethrough continues the connecting bore and serves to receive the branch pipe, and a pressing element (22) having a pressure surface (23) which, when the pressing element is screwed on to a counter-pressure surface (24) provided on a thickened portion (25) of the branch pipe, exerts a force by which a counter-sealing surface (16) of the branch pipe is pressed against the conical wall (18) of the outer portion of the connecting bore.

Abstract: A high pressure access fitting for a vessel, pipe or like structure includes a body of a material which is weld compatible with the vessel so the fitting may be welded to the wall of the vessel. The fitting includes an internally threaded section made of another material which is a corrosion resistant alloy and which acts to inhibit galvanic corrosion. The threaded section is an insert made of HASTELLOY.RTM., for example, and is threaded in place within the body with fine threads and with a metallic C-ring seal protecting the axial inner ends of the threads. The outer end projects beyond the body and provides a corner for a fillet weld. In addition, the fine threads of the insert/body connection are protected by a high temperature expandable sealing compound.

Abstract: A relatively impervious mechanical seal is formed between the outer surface of a tube and the inside surface of a mechanical fitting of a high pressure fluid or hydraulic system by applying a very thin soft metal layer onto the outer surface of the hard metal tube and/or inner surface of the hard metal fitting. The thickness of such thin metal layer is independent of the size of the tube and/or fittings. Many metals and alloys of those metals exhibit the requisite softness, including silver, gold, tin, platinum, indium, rhodium and cadmium. Suitably, the coating is about 0.0025 millimeters (0.10 mils) in thickness. After compression, the tube and fitting combination exhibits very low leak rates on the order or 10.sup.-8 cubic centimeters per second or less as measured using the Helium leak test.

Abstract: A relatively impervious mechanical seal is formed between the outer surface of a tube and the inside surface of a mechanical fitting of a high pressure fluid or hydraulic system by applying a very thin soft metal layer onto the outer surface of the hard metal tube and/or inner surface of the hard metal fitting, prior to swaging the fitting onto the tube. The thickness of such thin metal layer is independent of the size of the tube and/or fittings. Many metals and alloys of those metals exhibit the requisite softness, including silver, gold, nickel, tin, platinum, indium, rhodium and cadmium. Suitably, the coating is about 0.0025 millimeters (0.10 mils) in thickness. After swaging, the tube and fitting combination exhibits very low leak rates on the order or 10.sup.-8 cubic centimeters per second or less as meaured using the Helium leak test.

Abstract: A fluid conducting connector for use in water connections particularly water heater connectors. The connector assembly is designed for mating connection to a galvanized nipple for reduction of galvanic corrosion between dissimilar metal connections. An insulator sleeve is seated within the connector to maintain separation between the galvanized nipple and the copper tube of the assembly. The connector assembly includes an internally threaded female connector mounted to the copper tube for connection to the nipple. The insulator sleeve includes a tubular body and a radial flange. The body of the sleeve extends partially into the copper tube while the flange seats within the female connector acting as a washer for the assembly.

Abstract: A tube or pipe coupling joint structure comprises a pair of spaced flange members adapted for relative movement toward each other along a longitudinal axis. Each of the flange members has a face surface which is generally a surface of revolution about the longitudinal axis with the face surfaces on the respective flange members being located in opposed relationship to each other. A relatively smooth thin metal gasket is positioned between the opposed face surfaces of the flange members and each of the face surfaces comprises a sealing protrusion and a stop surface for limiting penetration of the sealing protrusion into the gasket. Moreover, each sealing protrusion is a circumferentially continuous flat and polished narrow sealing band of narrow width lying in a plane which is normal or deviates from normal to the longitudinal axis by no more than about 1 to 3 degrees.

Abstract: A manifold for conveying a high-pressure fuel comprises a main pipe having an axial bore and a plurality of ports formed through its wall, connected with the bore and spaced apart from one another along the length of the pipe, and a plurality of branch pipes each connected at one end thereof with one of the ports. The main pipe is provided with a plurality of short cylindrical projections extending laterally outwardly from its wall and each having an axial bore defining one of the ports. Each projection has an outer end provided with a conical or spherical surface, and an outer peripheral surface provided with a screw thread. Each branch pipe has a diametrically enlarged connecting head having a frustoconical or spherical surface closely fitting the conical or spherical surface of one of the projections.

Abstract: The present invention relates to an oil well pipe joint having improved resistance to galling and to a process for manufacturing the same, which comprises a porous blast-plated layer provided at least on a metal sealing portion by blasting soft metal particles such as of zinc and aluminum, particularly discrete particles each comprising an iron or iron alloy core covered by a zinc or a zinc alloy coating with an iron-zinc alloy layer intervening therebetween.

Abstract: A reaction tube system of a steam reformer, more generally referred to as tubular cracking furnace, for the indirect heating of cracking feedstock, such as the catalytic cracking of hydrocarbons, includes a plurality of reaction tubes and headers, the reaction tubes penetrating through the bottom of the steam reformer and being extended to the associated header by low-alloy tube sections attached to the tubes by circumferential welds. The reaction tubes are surrounded in the area of the weld(s) by a coaxial protective tube having one open end and defining a free annular space around the reaction tube. The protective tube prevents deterioration by corrosion of the weld(s) joining the tube sections of high-alloy steel with low-alloy extension sections with unalloyed steel extension section.

Abstract: This invention provides a fluid fitting made up of telescoping sleeves providing an annular space therebetween adapted to receive the end of a tube. The outer sleeve is attached to the inner sleeve by being deflected around annular ridges at one end of the inner sleeve. The sleeves are attached to the tube by swaging the outer sleeve so as to grip the tube between the two sleeves. Grooves in the inner sleeve provide corners which dig into the inner surface of the tube and provide seals and retention, while recesses in the outer sleeve receive deflected material of the tube to prevent rotation.

Abstract: A convertible fitting capable of selectively achieving a brazed, soldered or flared connection to a conduit. The fitting includes an interior passage and an exterior thread. The passage receives smooth wall conduit, such as tubing, for a braze or soldered connection, and an insert receivable within the fitting includes a conduit flare engaging surface and a seal cooperable with the fitting wherein the tightening of a conventional flare nut simultaneously seals the conduit flare to the insert and the insert to the fitting.

Abstract: A corrosion-resistant pipe coupling made of carbon steel has on its inner surface an intermediate annular projection directed radially inward. At least an innermost part of the annular projection is formed of corrosion-resistant material such as stainless steel. The annular projection may be covered by a corrosion-resistant annular member which is secured by friction welding, electron beam welding, an adhesive or mechanical engagement. The annular member prevents corrosion of the coupling by corrosive fluids flowing in pipes.

Abstract: A union joint for jointing pipes comprises a union head having a male screw thread formed on the outer peripheral surface of an axial inner end portion thereof and provided at its end with a seat member made of a non-ferrous material, a union tail piece having a collar on the outer peripheral surface of the inner axial end thereof and provided at its end with a sealing surface constituted by a part of a sphere having an arcuate axial cross-section, and a union nut provided at its front inner portion with a female screw thread and at its rear portion with an inwardly projecting jaw. An annular groove is formed in the axially inner end portion of the union head adjacent to the inner periphery of the union head, the annular groove having a substantial axial depth and receiving a substantially ring-shaped seat member, the inner wall of the union head defining the annular groove being knurled and flared at at least the end portion thereof over the entire circumference thereof and caulked onto the seat member.

Abstract: A method of connecting a joint of drill pipe for rotary earth drilling having tool joint members on each end with threaded connections for connecting the joint with other joints of drill pipe is shown. Nickel plating is applied to a portion of the threaded connection of at least one of the tool joint members. The threaded connection is then doped with a zinc base thread compound and the joint of drill pipe is made up by threadedly connecting the nickel plated threaded connection of one tool joint member with the threaded connection of a mating tool joint member. The nickel plated tool joint member when used with zinc base thread compound provides a connection with desirable frictional properties at elevated temperatures such as are encountered in geothermal wells.

Abstract: A gasket disposed between a coupling for a pipe conveying high pressure fluid and an apparatus presenting a tapped hole in which the threaded part of the coupling is screwed, said gasket comprising a hoop made of hard, resistant material bearing by one of its two faces against the wall of the apparatus and presenting a bore in which are engaged, around the coupling, a seal member made of creepable, malleable material and a ring to be crimped made of ductile material having a wedge-shaped cross section, said ring being crimped inside the hoop when the coupling is screwed. The invention provides tightness of couplings screwed on an apparatus.

Abstract: A bimetal flange connector (10) for connecting components (15) of a piping system such as fittings or pipe in which the bimetal flange connector (10) has a hub or preformed inset (12) of a first metal material compatible with the piping system components (15) enabling welding, brazing or other method to be utilized in connecting the inset (12) to the piping system component. The bimetal flange connector (10) has a rim (14) of a second metal material castable directly onto said inset (12). The rim (14) is retained on the inset (12) by a shrink fit on cooling, a metallurgical bond, a preformed retainer configuration of the inset or a combination of the foregoing. For certain combinations, of low carbon inset material and high carbon rim material, the inset (12) is prepared for the cast-on rim (14) by the interposition of a boundary layer (45) of carbon migration inhibiting material to prevent carbon migration from the cast-on rim (14) from adversely affecting the properties of the inset (12 ).

Abstract: A keg tapping apparatus includes a keg unit secured within the neck of a keg by a retainer and a tavern unit coupled to the keg unit by the retainer. An operating handle opens valves associated with the keg unit to establish fluid communication between the keg and fluid inlet and outlet fittings on the tavern unit. The retainer has a body which includes a generally cylindrical bore and notches which communicate with the bore. Complementary inserts received within the notches are integrally attached to the body and define coupling lugs which project into the bore for coupling connection with the tavern unit. The inserts are made from a harder material than the body.

Abstract: A pipe flange coupling having a carbon steel body and flange with a bore extending through the body and flange and a bolt circle in the flange, a lining throughout the entire length and circumference of the bore, and a sealing surface on the flange radially inward of the bolt circle and radially outward of the bore, the sealing surface and lining being of corrosion resistant metal fusion welded to each other and to the flange and bore and providing a structurally unitary body which meets the pressure code and also protects the carbon steel from corrosion.

Abstract: For sealing metal annular elements on to a cylindrical ceramic member, e.g. a ceramic electrolyte tube in a sodium-sulphur cell without causing excessive hoop stress in the ceramic, the ceramic tube is formed with tapered inner and outer surfaces at one end, correspondingly tapered inner and outer annular elements are put over these surfaces with a soft metal, e.g. aluminium interface layer, the inner and outer annular elements having coefficients of thermal expansion respectively less than and greater than that of the ceramic, the assembly is then heated and the annular elements forced in the axial direction onto the ceramic whereby the ceramic material, on cooling, is tightly secured between the annular members.

Abstract: A member to be welded to another member by means of a welding tool that clamps the two members together with the weld location in register with a welding tip carried by the tool. Attached to the member is a welding collar of a material different than the material of the members to be welded together. The collar is located relative to the tip by an interlocking connection between the tool and the one member.

Abstract: The invention is concerned with an improved joint between tubing and a flange having a hole therethrough into which the tubing is force-fit. The flange is made of powdered metal by placing the powdered metal and a lubricant in a mold, compressing the powdered metal at a pressure of at least about 4 .times. 10.sup.7 Kg. per sq. meter, removing the resulting flange from the mold, initially heaing it in an inert or reducing gas atmosphere to remove the lubricant, heating it further at a higher temperature to cause intermetallic bonding thereof, cooling it to a temperature below about 100.degree.C and dry machining annular channels into the hole in the resulting flange. The joint is formed by placing the tubing within the hole and expanding the tubing outwardly into the channels which extend from the hole. The resulting joint has a much higher resistance to torque than does a similar joint made between tubing and a machined flange of similar or even greater hardness.

Abstract: A mounting for an object processed at a predetermined temperature in an uahigh vacuum chamber having a stainless steel wall. The mounting has a stainless steel tube welded to the wall and opening through it and has an oxygen-free-high-conductivity copper finger extended from the tube to receive the object. At the junction of the tube and the finger, the tube bears an annular knife edge which engages a flat surface of the finger, and an ultrahigh vacuum seal is established by a collar and bolt coupling which draws the finger against the knife edge. The temperature of the finger and the object are then controlled and measured by cryogenic liquids, electrical heaters, and sensors inserted through the tube into contact with the finger.