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UNAFLEXExcellence in ManufacturingISO 9001:2008 CERTIFIED LLC.
Why Use Rubber Expansionor Vibration Joints?Three Basic Reasons for Their Use:E xpansion Joints and ConnectorsPrevent Stresses Due to Expansion1 Toand ContractionInsulate Against the Transfer2 Toof Noise and Vibration3 To Compensate for MisalignmentUnaflex Rubber Expansion Joints provide relieffrom stresses caused by thermal expansion andcontraction in pipelines. Movement is alwaysexperienced in piping systems due to varyingambient temperatures, differences in temperature ofmaterials handled, and differences in composition.Expansion joints absorb this movement andeliminate the danger of buckling or pulling apart withthe high replacement costs that would result.Settlement, load stresses and normal wear ofcomponents will frequently cause piping andmechanical equipment to become misaligned.Expansion joints can resolve these problems withintheir design limits. Special designed expansionjoints are available for specific conditions andmisalignment.Control UnitsRetainingRingsGusset PlatePumps, compressors and other pulsating equipmentgenerate noise and vibration. The transmission ofnoise and vibration tends to reduce the efficiency ofadjacent equipment and impairs working conditionsin offices and plants. Expansion joints serve asreliable insulation against such vibration and noise.Steel WasherThreaded RodDefinition of MovementAxialCompressionReduction of faceto-face dimensionmeasured alongthe axis.AxialElongationIncrease of face-to-facedimension measuredalong the axis.VibrationAbsorptionTransverse orLateral MovementThe movement of thejoint perpendicular tothe axis.AngularMovementMating FlangeExpansion JointExcessive elongation, caused by shifting of pipelines mayseriously damage rubber expansion joints. This damage canoccur when necessary support is not provided for the weight ofthe pipeline or low temperatures in the line are encountered, orwhen the system on the pressure side of air compressors arenot anchored properly.Such destructive elongation can be controlled with Unaflex control units. These units are recommended for use wheresuch conditions occur, such as on air-conditioning units thatare subjected to reduced temperatures.Percent of Reduction of Vibration Input With Frequencyand Pressure as Compared to Steel PipeCenterFreq.The movement of the jointdue to vibrations which areeffectively intercepted andinsulated against transmissionto remainder of system.The displacement of the longitudinalaxis of the joint from its initial straightline position (a combination of axialelongation and axial compression).Advantages over MetalExpansion Joints Vibration and sound insulation Greater recovery from movement Freedom from embrittlement Resistance to corrosion No gaskets between flanges No electrolysis2UNAFLEXExcellence in Manufacturing LLC. Axial and lateral deflection Small space requirements Lightweight Ease of installation Higher working pressures8” I.D. x 6” F-FExpansion JointHz10 psig50 psig80 %800089%89%94%For more complete details, visit unaflex.com and click on “PTFE Expansion Joints”
“Supreme” Spool-Type Expansion JointsUnaflex “SUPREME” Spool-Type Expansion Joints are availablein three basic styles: Style 150 for pressure and vacuum Style 1000 for pressure, vacuum andgreater movement Style 200 for high-pressure service.Joints that handle up to 500 F areavailable. Style 200XL for extra high pressureservice (consult factory)VariationsTapered JointsUsed to connect pipelines of unequaldiameter. May be manufactured asconcentric or eccentric, dependingupon pipe alignment.These basic types can be manufactured tomeet the requirements of ASTM F1123-87(Note: The U.S. Navy previously used MILE-15330D, Class A-Type I as its standardspecification, but has adopted the ASTM Specification).Offset JointsUsed to correct initial pipe misalignment greaterthan 1/8-inch. Drawings must accompany ordersor inquiries.Unaflex “SUPREME”Tapered Expansion JointsFilled ArchesBuilt as an integral part of the carcass. Theyreduce turbulence and prevent the collection ofsediment in the arch. Movement of the joint isreduced approximately 50%.Multiple ArchesAdditional arches increase movement of the joint.Movement can be calculated by multiplying themovement of a single arch joint by the number ofadditional arches.ConstructionDetailsFlangesFull-faced and made as an integral partof the joint to insure a tight reliable seal.No gaskets are necessary. Drilled toconform to the bolt pattern of the matingpipe flange.TubeA single piece of leakproof liningextending flange-to-flange. Can befurnished in natural rubber, neoprene,chorobutyl, hypalon, Viton , nitrile, orother compounds and can also be linedwith TEFLON All rubber is speciallyformulated to provide maximum soundand heat insulation as well as abrasionresistance.CarcassStrong, bias-ply construction, highstrength woven polyester reinforcingfabric between the tube and cover.Will not rot or mildew and is thoroughlyimpregnated with a special frictioncompound to give maximum adhesionunder pressure, vacuum and stress.Steel ReinforcementsChemically treated, solid-round, endlesssteel rings or wire embedded in thecarcass (with the Unaflex proprietarymethod to prevent ring migration) givingmaximum strength to the joint. Roundrings are used so there will be no sharpedges to cut into the carcass whileflexing of the joint occurs, eliminatingpremature wear.Unaflex Expansion Joints can be made with filled arch, multiplearches, TEFLON ; PTFE and (FEP)-lined, sleeve ends, withoutarch, tapered (eccentric or concentric), with enlarged arch andwith special tube compounds for air, gas, oil, petroleum products,acids and chemicals of many types.Unaflex “SUPREME” Tapered Spool-Type Expansion Jointsare available in four types; Style 150, 1000, 200 and 200XL.Tapered joints are used to connect flanges with differentdiameters, whether parallel or offset, with initial misalignmentless than 1/8-inch.Tapered joints can be made with the following variations:with filled arch, sleeve ends, without arch; with special tubematerials; with larger arch; with straight section on smaller endof joint to assure clearance of bolts on eccentric type joints andon joints with considerable taper.Both concentric and eccentric shapes are available in a widevariety of sizes. As with the regular expansion joints, whenpiping is not anchored, control units must be used to preventover-elongation of the chFor determining operating characteristics, use the largest I.D.dimension of the tapered expansion joint for specifying.Note: Unaflex Flexible Rubber Pipe can also be supplied in thetapered Steel Retaining RingsMade of flat-rolled steel, split, beveledand galvanized, painted, fluoropolymercoated or electroplated. Rings arerequired for installation of the joint.E xpansion Joints and ConnectorsSleeve-Type JointsConstructed as a standard spool-type joint minusthe integral flanges. I.D. of the sleeve end is thesame as the O.D. of the pipe.CoverThe exterior surface of the joint,compounded of fire-retardant neopreneto withstand aging, cracking andcorrosion. Other compounds may alsobe used.ArchArches are built-in as an integral partof the carcass. They function to provideflexibility to the joint in use.Hand Wrapped FinishHand wrapping the finish (although moretime consuming in manufacture) insuresindividual attention so that maximumpressure for curing has been established.Engineering Data for Tapered Expansion JointsThe degree of taper should not exceed 25 . Where a taper ismore than 15 a filled arch is recommended. Where a filled archis utilized, the available movement will be decreased 50% fromthat of an open arch. Where a proposed taper is greater than25 , we recommend a steel reducer be utilized and a spool-typeexpansion joint be used in the adjacent piping.The above guides are generally applicable to concentric tapers.Where an eccentric taper exceeds 25 , consult Unaflex engineering department.Excellence in Manufacturing UNAFLEXLLC.3
Additional information including spring rate forces, and for sizes through 144” can be found in the extended e-version of the Unaflex Rubber Expansion Joint Catalog online atwww.rubber-expansion-joints.comDimensions for “Super flex Wide Arch & Supreme ” SpoolType (single Arch) Expansion Joints(Measurement in inches)Bolt HolesBoltHoleDia.Ret.RingI.D.FlangeThk.NOTE: All joints suitable for vacuumservice and can be manuf. for full vac.Maximum aceFlangeO.D.Bolt 0375125Technical statements and engineering data in this catalog is the most accurate information available at the time of printing and are subject to change without notice. AsUnaflex does not supervise or control the use of our products, Unaflex cannot be responsible for improper use or misapplication of catalog data.Note: All charts are applicable to DURA-PERM TEFLON ExpansionJoints with respect to Temperature and Pressure data. For a filled arch, reduce available movements by 50%. For multiple arch expansion joints, take the movement shownabove and multiply by the number of arches.Contact our Engineering Department for completedata and specifications. Call Toll Free: (800) 327-1286Dimensions shown on page 6
Ordering Information for Styles 150, 200 & 1000Contact our Engineering Department for Complete Data and SpecificationsCall Toll Free: (800) 327-1286, Fax: (954) 941-7968or visit www.unaflex.com or email: sales @unaflex.comTemperature Limits forContinuous ServiceStyleTempStyleTemp150180 150 HTS300 200180 200 HTS300 1000180 1000 HTS300 1100180 150 V400 150 HT250 200 V400 200 HT250 1000 V400 1000 HT250 189 SG400 1100 HT250 To receive a quotation or whenplacing an order, please specify thefollowing: Style (140, 150, etc.) Quantity Inner Diameter Flange Drilling Materials Conveyed in Line Pressure and/or Vacuum Ranges Temperature Range Movements-Axial Compression,Extension and Lateral Deflection“SUPREME” Lightweight and U-Type Expansion JointsUnaflex Style 189 Dimensions & SpecificationsArchSingleDoubleTripleJoint SizeI.D. (in.)Min. Faceto-Face(in.)Comp.(in.)Ext.(in.)Lateral(in.)2 to 867/1610 to 13811/169/165/814 to 24813/1611/165/825 to 30815/1613/165/81-1/4Specify Unaflex “SUPREME” Rubber ExpansionJoints as follows: Style 150 for pressureand vacuum service Style 200 for highpressure service Style 1000 for pressureand vacuum with greatermovementMinimum Face-to-Face DimensionsFor Styles 150, 200 & 1000Joint SizeI.D. (in.)SingleArch Min.f-f (in.)DoubleArch Min.f-f (in.)Triple Arch Min.f-f (in.)1/2 to 6*14/20*14 to 20812/16*16/20*22 to 241014/16*18/22*26 to 341014/16*18/22*36 to 401014/18*18/22*42 to 961214/18*18/22**Wide Arch Style 10005/16Note: These face-to-face dimensions are only a guide.Consult factory for special requirements.5/82 to 5127/85/86 to 13121-3/81-1/81-1/414 to 24131-5/81-3/81-1/425 to 30131-7/81-5/81-1/42 to 5161-5/1615/162-1/26 to 13162-1/161-11/162-1/214 to 24182-7/162-1/162-1/225 to 30182-13/162-7/162-1/2Unaflex “SUPREME” Style189 Lightweight RubberExpansion Joints are availablein either round or rectangular(with arch) configurations.They are recommendedfor pressure and limitedvacuum applications suchas: air, gas and waterservice where pressuresare low and medium-not toosevere. They may also beused on equipment wheretemperatures do not exceed 180 F.Maximum operating pressures for all sizes is 25 psig internal pressure and15 inches of mercury vacuumThey feature a lighter wall and flange thickness toprovide flexibility. Their duck plies are reinforcedwith steel rings. Style 189 Joints are also availablefor temperatures up to 500 F and can be made withsleeve ends.Unaflex Style 145, 155, 156, 157 and 185Unaflex “SUPREME” U-Style Rubber ExpansionJoints form a flexible connection between equipmentoutlet and inlet flanges. They are normally constructedof a natural rubber tube, several heavy plies of rubberor neoprene–impregnated fabric and a neoprenecover to protect the carcass. Consult engineeringdepartment for maximum operating temperature. Theyare available in the following configurations.Rectangular (style 145)With internal flange (no arch) for vacuum andpressure. They allow ample axial and lateralmovement capable of withstanding 30-inches ofvacuum, or 25psi gauge internal pressure. Retainingflanges are provided for support.Round (Style 156 & 185)Oval (Style 155 & 157)With external flange. Available in Style155 for vacuum only and Style 157for pressure and vacuum. Used ininstallations where external bolting isdesired. Style 155 withstands 30 inches ofvacuum with standard flat steel retainingrings. Style 157 is designed for both30 inches of vacuum and 25psi gaugeinternal pressure and are designed withspecial steel fabricated support rings.Lightweight rubber expansionjoints available in Style 156,“U”-Type, no arch, for vacuumonly; Style 185, round “U”-Type,no arch, steel reinforced forvacuum and pressure. Style156 body is of duck and rubberwithout metal reinforcing. Style185 is constructed with steel reinforcement. These units canalso be supplied with offset features.UNAFLEXExcellence in Manufacturing LLC.5
Unaflex “Dura-Perm” Styles 140, 150 and 200Unaflex “DURA-PERM” *FEP-lined Expansion Joints combine the features of FEP/PTFE forchemical resistance, anti-stick properties, thermal stability, and resistance to age cracking–withthe best features of elastomeric expansion joints–good noise an vibration dampening, flexibilityand high-pressure ratings. Temperature ratings to 400 F available. Sizes of 1” to 48” I.D. instandard face-to-face dimensions, or special lengths. For dimensions and working conditions,refer to charts on page 4-5.1/2”-12” are PTFE lined.14” and above are FEP lined (Fluorinated Ethelene Propylene Copolymer).Dimensions for DURA-PERM PTFE/FEP-Lined Style 1000 Expansion JointsFor comprehensive dimensions and data, visit unaflex.com PTFE Expansion Jointsrefer to page 4 for illustrationMovementsNo. of BoltsBolt Hole Dia.Retaining Ring I.D.Style 1000 Max. PSIAxial CompressionAxial ExtensionLateral DeflectionJoint Weight/lbs.Retaining Rings/lbs.Control Units 411111982111361544487Bolt Circle Dia.1/23/41Joint Size N.D.Flange O.D.WeightsFace-to-FaceA-Flange ThicknessB-Body ThicknessC-Internal Arch HeightD-Arch WidthE-Arch ThicknessUNAFLEXExcellence in Manufacturing6 LLC.ABCDE
“Mighty-Span” Rubber Flue Duct Expansion JointsUnaflex “MIGHTY-SPAN” Style 600 Rubber Flue Duct Expansion Joints are designedto handle hot air or gasses in industrial duct work, as well as those generated by powerplant and pollution control equipment. They are custom constructed of rubber and fabricto absorb thermal movements and vibration in duct work and to aid in the elimination ofnoises caused by scrubber equipment and mechanical dust collectors.MIGHTY-SPAN is capable of handling any combination of large movements which mightoccur in a ducting system due to thermal expansion. MIGHTY-SPAN creates almost noload on damper and fan interfacing flanges, thus providing much needed protection inthese critical areas.A wide range of elastomers and fabric substrates are available to provide maximum resistance to corrosionand high temperature capabilities as well as white FDA food grade elastomers. Let Unaflex assist you inselecting the MIGHTY-SPAN product for your application.Configurations Square, rectangularor round in any size.Standard construction “U”shape, 9” face-to-face, 3”flange. Arch shapes alsoavailable. One-piecebody 5/16” thick. Steelretaining rings areprovided (send drawingor call Unaflex forquotation.)Sleeve TypeSleeve TypeChoice of MaterialFabric ReinforcementStyle 600 Joints may be constructed of *Nomex (to400 F), fiberglass or polyester cloth impregnated withone of the following:U-TypeSingle ArchMulti ArchU-TypeSingle ArchMulti ArchEnvironmental ConditionsElastomerTube and CoverNeoprene–Resistant to heat, adverse weather,ozone and fuel gasses. Impervious to fats, oils,greases and other petroleum products. For use up to250 F.Chlorobutyl–An elastomer with all of the aboveadvantages of neoprene, with the exception of itsinability to withstand oil. For use up to 300 F.Usable to FRecommended for Use InOils, GreaseOzone & iton 400goodgoodSilicone500good--*Viton /**Fluorel –In addition to providing all of the properties ofneoprene, Fluorel is resistant to mineral acids and usable in400 F applications.Silicone–A high-quality elastomer recommended for allenvironments except those with sulfur gas (SO2 or SO3).For use in -70 to 500 F applications.*DuPont trademark **3M trademark.U-Type compression and elongation formulasRecommended ServicePressureto 3.0 psig, maxVacuum6.12” Hg, 83”, /2”Lateral Elongation 2 lbs. per foot of perimeter per 1/16” of movement. For example: 2’ x 2’ I.D. 8’perimeter deflection 1” 16/16. 2 lbs. x 8” x 16” 256 lbs.Axial Compression 2.2 lbs. per foot of perimeter per 1/16” of movement. For example: 2’ x 2’ I.D. 8’perimeter deflection 1” 16/16. 2.2 lbs. x 8” x 16” 282 lbs.UNAFLEXExcellence in Manufacturing LLC.7
The Industry’s Most Complete Line of Expansion JointsUnaflex “Radi-Flex” Elbow Expansion JointsE xpansion Joints and Connectors“RADI-FLEX” Joints are designed to reduce noise and vibration inangled installments. Spiraled steel wires are embedded in the wallsfrom flange-to-flange for extra strength. Standard construction isof rubber tube with polyester reinforcement with a synthetic cover.Temperature ranges up to 180 F can be handled. High temperatureconstruction using a butyl tube with polyester reinforcementand a butyl cover allow use from 180 F to 250 F. Also availablein Neoprene, Buna N, Hypalon and EPDM (Nordel). Maximumpressures for standard units are: 2” and 3”-90 psi; 4” to 6”-80 psi; 8”to 10”-70 psi; and 12” to 14”-60 psi.8Unaflex “RADI-FLEX” Elbow Joints DimensionsSizeN.D.AB FlangeO.D.CC to F 90 STD.CC to F 90 L.R.CC to F45 Movement ”3/4”3/4”3/4”Notes:1. Flange size dimensions conforms to ANSI-Class 150# drilling2. Split rings are 3/8” Galvanized Steel Plate3. Center-to-face dimensions are subject to 1/4” toleranceCrosses, Tees and Special ProductsSpecial Products include:Unaflex “RADI-FLEX” Crosses and Tees are custom manufacturedto your specifications with all features of our Elbow ExpansionJoints. Call for further information regarding availableconstructions and delivery schedules. Pipe Clamp Sleeves Wellpoint Sleeves Endless belts for use on equipment Rubber Tubing Vacuum Sleeve Connectors Exhaust Connectors Suction Box Hose for Papermills Dredge Sleeves Slurry Connectors Food Handling Connectors Acid Hose Connectors Pre-Formed Hose Pinch Valve BodiesUNAFLEXExcellence in Manufacturing LLC.
“Super-Quiet” Rubber Vibration and Sound AbsorbersStyles 2150 and 2250Unaflex “Super-Quiet” Styles 2150 (150 psi WP) and 2250 (250 psi WP)vibration and sound absorbers are specially designed lengths of rubberpipe with factory attached ferrules for pipe and other connections involvingstandard IPT. They eliminate vibration between pump and pipe lines eitherfor suction or discharge.*Style 2150 and 2250 DimensionsFor Working Pressures to 150 PSIFor Water Service from180 to 250 F Max.Ferruled Coupling21502150 H.T.3/412224Flanged End31503150 H.T.1182-1/224For Working Pressures to 250 PSI1-1/418336For Water Service to180 FFor Water Service from180 to 250 F Max.1-1/218436Ferruled Coupling22502250 H.T.Flanged End32503250 H.T.Unaflex “Super-Quiet” Styles 3150(150 psi WP) and 3250 (250 psiWP) sound absorbers are built withmolded rubber flanged ends with boltholes that accommodate standardsteel flanges. Available with or withouthelical wire reinforcement. Specialtubes can be made to meet uniquerequirements for either suction ordischarge.Center Freq.Hz180 F180 F250 F250 F150# W.P.250# W.P.150# W.P.250# W.P.Face-to-FaceMin (in.)Max (in.)Ring 7/85123661836Bolt Cir.FlangeDiam. (in.) Thick. (in.) Diam. (in.)8” I.D. x 24” F-F Vibration Joint10 psig50 psig80 9%800097%97%98%EXAMPLE: If a steel piping system had a major vibration frequency of 1,000Hz at 50 PSIG and 8” rubber expansion joint was installed in the pipeline, thepercentage of reduction of vibration would be 96%. Above data taken from theFluid Sealing Association Handbook.Style 3150 (Conforms to ANSI 150# Drilling)5StandardOverall Length(in.)Percentage of Reduction of Vibration Input withFrequency and Pressure as Compared to Steel PipeSpecify Unaflex Flexible ConnectorsJointSizeN.D.(in.)Pipe SizeN.D. (in.)IMPORTANT: Unaflex Vibration andSound Absorbers are not designed toaccommodate the movement in a pipingsystem caused by temperature changeor other conditions. See Spool-TypeExpansion Joints for such applications.“Super-Quiet” Styles 3150 and 3250Style 3150Style 3250Style 3150 HTStyle 3250 HTStandardOverallLength (in.)Style 3250 (Conforms to ANSI 300# Drilling)Ring I.D.Bolt HolesNo.Diam. (in.)(in.)4E xpansion Joints and ConnectorsFor Water Service to180 FPipeSizeN.D.(in.)5/82-7/8Bolt Cir.FlangeDiam. (in.) Thick. (in.) Diam. (in.)6-1/823/324-1/2Bolt HolesNo.Diam. e in Manufacturing LLC.9
“Unasphere” Style 800 Expansion JointsPrecision molded of neoprene and nylon, these units require less force to move thanconventional joints, allowing maximum deflection, elongation and compression. Theirdesign is stronger than other configurations because of the spherical shape. Thesmooth flow arch reduces turbulence and allows quiet flow without sediment build-up.All three styles also available in EPDM and nitrile with neoprene cover.Design Data:Pressure–16” HG Vacuum, 225 PSIGTemperature–20 F to 180 F.E xpansion Joints and ConnectorsSize, Movement, Pressure, Weight and Drilling DataALTHAllowable MovementSize (in.)Face-toFace (in.)Flange Thick(in.)No. ofHolesThread SizeLateralDeflect (in.)Elongation (in.)Compression (in.)AngularMovement265/845/8-11NC 1/23/81/2152-1/2611/1645/8-11NC 1/23/81/2153611/1645/8-11NC 1/23/81/2154611/1685/8-11NC 1/23/85/8155613/1683/4-10NC 1/23/85/815667/883/4-10NC 1/23/85/815867/883/4-10NC 1/23/85/81510815/16127/8-9 NC 3/41/23/41512815/16127/8-9 NC 3/41/23/415“Twin-Sphere” Style 802The Twinsphere is precision molded of neoprene and nylon tire cord. The double archdesign allows for greater movement four different ways and provides for a non-turbulentflow. Angular movement up to 30 is obtainable with its highly flexible design. Rated for225 PSI WP at 170 F. Pressure is reduced at higher temperatures. Vacuum Rating to26” HG.Size 81.183012”13”1.78.581.1830“Twin-Sphere” Style 803This highly capable, low-cost expansion joint is available for smaller diameter pipingsystems found in power plants, chemical plants, waterworks, sewage treatment plants andprivate residences, etc. The Twin-Sphere provides excellent vibration absorption and stressrelief in a light, compact construction.Operating Pressure: 150 PSI. Vacuum Rating: 15” HG. Diameters are available in 3/4”, 1”, 1-1/4”, 1-1/2”and 2”10UNAFLEXExcellence in Manufacturing LLC.
“Multi-Purpose” PTFE (TEFLON ) Expansion JointsUnalon Styles 112A, 113A and 115A Solid TEFLON Molded Expansion Joints were developed to withstandhigher pressures and temperatures. Their design allows a shorter face-to-face dimension, making them idealfor use where space is limited. They are lightweight and corrosion resistant. Available in sizes 1” to 12” NominalDiameter and for temperature ratings from -300 F to 400 F.Comprehensive technical data charts can be accessed by visiting Expansion Joint DataStyle 112A (2 )AxialStyle 113A (3 t(In.)Axial LateralStyle 115A (5 188.50
Movement of the joint is reduced approximately 50%. Multiple Arches Additional arches increase movement of the joint. Movement can be calculated by multiplying the movement of a single arch joint by the number of additional arches. Construction Details Flanges Full-faced and made as an integral part of the joint to insure a tight reliable seal.
