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Garlock Rubber Expansion JointsSafe – Reliable – DurableEurope, Middle East and AfricaAdvancingLeaderstheinScienceSealing ofIntegritySealing

Garlock Rubber Expansion Joints: Safe – Reliable – DurableTable of contentsAPPLICATIONS3Axial MovementLateral MovementAngular MovementTorsional MovementVibrations / Oscillations / NoisesGARLOCK RUBBER EXPANSION JOINTSUniversal expansion joints with abrupt arch4Universal expansion joints with flowing arch4Universal expansion joints with rotary flanges5Specials5Basic Design6PIPING EXAMPLESUniversal expansion joint7Axial expansion joint with limited axial movement7Lateral expansion joint8Angular expansion CATION DATA SHEET11Leaders in Sealing Integrity2

Garlock Rubber Expansion Joints: Safe – Reliable – DurableGarlock Rubber Expansion JointsDependable absorption of movements and vibrations in piping systemAn expansion joint is a specially engineered product inserted in a piping system in order to protect it. For example, movements due to thermalexpansion, vibrations of pumps and misalignments due to installation tolerances can be compensated by expansion joints. Therefore theymust be resistant to the process conditions and the external influences.Due to many years of experience, Garlock offers solutions for various areas. Garlock rubber expansion joints have been successfullyused in the various industries (chemical, petrochemical, water / wastewater, power plants, etc.) for many years.Movements within the piping systemAxial MovementThe axial movement of the pipe changes the distancebetween the two flanges.Lateral MovementLateral movements generate an axial offset of the pipeline components.Angular MovementAngular changes of the flange surfaces to each other aregenerated in the piping system by a combination of length changes,bearings and axis offset.Torsional MovementTorsion movements are caused by simultaneous rotation of bothflanges in opposing motion due to manufacturing tolerances of thepipe sections or by unfavorable arrangements of the pipe guides.Vibrations / Oscillations / NoisesVibrations, oscillations and noises can be brought into the system bypumps and other components. Expansion joints prevent vibrations,oscillations and noise from spreading in the piping system.Leaders in Sealing Integrity3

Garlock Rubber Expansion Joints: Safe – Reliable – DurableGarlock Rubber Expansion JointsOur stylesGarlock offers a variety of different expansion joints as well as accessories (UV protection panels / flange protection hoods, etc.). Also thedesign / calculation of expansion joints (as soft as possible and as stable as necessary) is part of our portfolio. This brochure is giving anoverview of the most common styles of our product range.Universal expansion jointswith abrupt archUniversal compensators, which are characterized by a short designwith simultaneous good longitudinal changes in the axial direction.The permissible movement can be adapted to the required range bythe number of arches.StyleSpecial Feature204 (-EUD)Standard design204 HP (-EUD)High pressure design204 EVS (-EUD)Extreme vacuumdesign404 (-EUD)High abrasiveresistance404-HP (-EUD)High pressure designBenefitsStiffer designInternal back-up ringsStiffer designUniversal expansion jointswith flowing archThis design can be used as a universal, lateral and angularcompensator. Its self-flushing arch design eliminates media build upand reduces turbulence. The permissible movement can be adapted tothe required range by the number of arches. The pressure range can beextended by the use of inner or outer back-up rings.StyleSpecial Feature206 EZ-FLO / 206-EUDStandard design306 EZ-FLO / 306-EUDFEP-Liner406 EZ-FLO / 406-EUDHigh abrasiveresistanceBenefitsThe inner seamless FEP liner extends to the outer edge of the flange and iscompletely fused with the compensator bodyLeaders in Sealing Integrity4

Garlock Rubber Expansion Joints: Safe – Reliable – DurableGarlock Rubber Expansion JointsOur stylesUniversal expansion jointswith rotary flangesThese joints are characterized by rotatable flanges, whereby the holepatterns of the two flanges can be offset. They can be used asan universal or lateral compensator. The streamlined flowing archdesign reduces turbulence and allows smooth, quiet flow. Thepermissible movement can be adapted to the required range by thenumber of arches.StyleSpecial Feature8100 (-EUE)Standard design8100 (-EUD)Special designBenefitsAvailable in standardized lengthsAvailable lengths according to customer requirementsSpecialsLeaders in Sealing Integrity5

Garlock Rubber Expansion Joints: Safe – Reliable – DurableGarlock Rubber Expansion JointsBasic DesignThe different applications, as well as the operating conditions for the rubbercompensators, make it necessary to adapt the bellows according to the application.The inside area comes into contact with the medium and must therefore bechemically resistant to them.The compensator absorbs the forces caused by the process pressure and themovements. The outer shell is exposed to environmental influences. Dependingon the application, different materials are combined.Body WireCoverNeoprene TubeTube / CoverTube / CoverTubeTube / PDM- 40 C to 150 C» Conductive» Food suitable» Abrasion resistant» Very good chemical resistance, weather-resistant, thus coveringa wide range of applicationsCIR- 20 C to 150 C» Abrasion resistant» Very good chemical resistance, weather-resistantFKM- 20 C to 205 C» Food suitable» Very good general resistance, especially against mineraloils, fuels, animal and vegetable fats, chlorinated, aromaticand aliphatic solventsCR- 20 C to 82 C» Good resistance to grease, ozone, weathering, light and flameCSM- 20 C to 100 C» Very good resistance to strong oxidizing agents, sea water, saltsolutions and alcohols, as well as good resistance to many oilsNBR- 30 C to 100 C» Good resistance to oils, animal and vegetable fats, hydrocarbonsand gasNR- 20 C to 82 C» High combination of tensile strength / elasticity is possible» Very good abrasion resistance» Medium resistance to sea water, acidBody WireTemperatureCharacteristicsFabricGlass- 40 C to 205 C» Particularly stable and temperature resistantSteel- 40 C to 205 C» Particularly stable and temperature resistantAramid- 40 C to 180 C» Excellent shock absorption, tensile, abrasion and tear strengthPolyester- 40 C to 120 C» Low-cost, high durabilityNylon- 40 C to 120 C» Low-cost alternativeLeaders in Sealing Integrity6

Garlock Rubber Expansion Joints: Safe – Reliable – DurablePiping ExamplesTypes of Pipe MovementsWhen designing a piping system, the piping system should not provide a statically rigid system. Combinations of anchor, pipe guides andexpansion joints give the system the necessary adaptability to movements of the piping system. The different combinations of anchor,pipe guides and pipeline layouts lead to necessary requirements for the expansion joint. With these requirements, the joints can be betteradapted to the required movements.Universal expansion jointUniversal expansion joints can handle different movements at the same time.In the shown installation layout, the pipe guides only allow an axial movement.Axial expansion joint with limited axial movementTo protect the joint against excessive motion or damage, control units are always recommended.Control Unit RodCompression NutsSpherical WasherRetaining RingFlange ConnectionFlange ConnectionStandard Pipe FlangeRubber Expansion JointsStandard Pipe FlangeLeaders in Sealing Integrity7

Garlock Rubber Expansion Joints: Safe – Reliable – DurablePiping ExamplesTypes of Pipe MovementsLateral expansion jointLateral expansion joints can handle movements crosswise to the piping system. In this case, the control units are supplied with sphericalwashers and bevel washers.In the shown installation layout, the pipe guides only allow a lateral movement.Due to the operating pressure and the active joint cross-section, the compensator generates axial forces. These are absorbed by the controlunit and are not transmitted to the pipeline.The lateral flexibility of the control unit is ensured by the use of spherical washers and bevel washers.Spherical Washer withBevel WashersControl Unit RodSpherical Washer withBevel WashersRetaining RingFlange ConnectionFlange ConnectionStandard Pipe FlangeRubber Expansion JointsStandard Pipe FlangeLeaders in Sealing Integrity8

Garlock Rubber Expansion Joints: Safe – Reliable – DurablePiping ExamplesTypes of Pipe MovementsAngular expansion jointAngular expansion joints absorb only angular movements. Special control units with a fixed pivot point support this movement.In the shown installation layout, with the installed pipe guides and angular expansion joints, both joints only allow an angular movement.The pivot ensures that the resulting axial forces of the expansion joint are not passed on to the pipeline.Leaders in Sealing Integrity9

Garlock Rubber Expansion Joints: Safe – Reliable – DurableInstallationGuideline for installationPreparationCheck compensator» Check outside joint cover for damageCheck alignment» Check the piping system for misalignment, as misalignmentreduces the working range of the expansion jointCheck support» Weight must not be carried by joint» Support with hangers or anchorsCheck flanges» Clean all mating flanges surfaces» Do not scratch or damage surfaces during cleaningTypical Piping LayoutInstallationLubricants» There is no lubricant neededInsert bolts from arch side» Set bolt heads next to the arch» The bolts must not have contact to the arch of the jointTighten bolts» Tighten gradually and equally in a star-like crossing patternsaround flange» The tightening torque must not exceed the maximum allowedtorque of the joint or flange.Proper use of Anchors in Branch ConnectionsLife expectancy of rubber expansion jointsThe service life of rubber expansion joints depends on processconditions as well as environmental influences. If theexpansion joint demonstrates signs of external damage,deformations or visible alteration, replace it as soon aspossible. To check natural aging, the Shore hardness of thejoints can be used as an indicator.Leaders in Sealing Integrity10

Garlock Rubber Expansion Joints: Safe – Reliable – DurableApplication Data SheetServiceOf course you can contact Garlock for an application-specific construction any time. To get this service asfast as possible, please order our application data sheet, which also can be found on our website www.garlock.com.ApplicationData Sheet:Rubber Expansion ical SpecificaTubetionID. signTemperature C:Environment:OperatingTemperature C:Flow Ratem/s:Design Pa:m:Angle deg.:Tube:Bodywire:lLateral madditionaMovemenmm:Axial mmMaterialtsrametersOverallLength:Cover:Control Unit:Guide Tube:In frameFlangeEnteringOuter diameterFlange mm:Outer diametcontact su errface mLeakagefor:Draft Drawingm:Inner diameter mm:Flange thickness mBold circlem:diametermm:Number and diameterof the bolt holes:Material:Date:Signature:GARLOCK GMBHEnPro Industries familyofcompaniesFalkenweg1, 41468 Neuss, GermanyTel: 49 2131 349 0www.garlock.comGarlock Sealing TechnologiesGPTGarlock PT YGarlock do BrasilGarlock de Canada, LTDGarlock ChinaGarlock SingaporeGarlock USAGarlock IndiaPrivate LimitedGarlock de Mexico, S.A. DeC.V.Garlock NewZealandGarlock Great Britain LimitedGarlock Middle EastLeaders in Sealing Integrity11