Unaflex Metal Expansion Joints - Bay Port Valve

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A Leader inEXPANSION JOINTManufacturingNo other manufacturer in the United States has the capabilities ofUnaflex . We are a full service expansion joint manufacturer offering a fullrange of flexible components and customer support. We offer a full rangeof products in the highest grades of stainless steel, as well as more exoticalloys including Monel , Inconel and Hastelloy .Unaflex Quality control is rigorous and complies with requirements of MILI-45208 and MIL-Q-9858. Our Expansion Joints also comply with U.S. CoastGuard requirements. Certification is available.Our expertise and manufacturing capabilities include Bellows-TypeMetal Expansion Joints and Connectors, Rubber Expansion Joints,Teflon Expansion Joints, Fabric Expansion Joints, Metal Hose and PumpConnectors. Unaflex is one of the few companies in the world that canoffer a complete expansion joint and hose product line.This catalog outlines the selection and installation of our Metal BellowsType Expansion Joints and Pump Connectors for use in piping/ductingsystems along with process equipment to absorb thermal movement. Ourproducts incorporate the latest recommendations of the Expansion JointManufacturers Association (EJMA).2

Table of ContentsOverviewEngineering CapabilitiesIndustry CodesMaterials UsedManufacturing CapabilitiesStandard Expansion JointsMatchless Expansion JointsTied Universal JointsExternally Pressurized JointsSeries 5000 Pump ConnectorsTube Flex Engine Exhaust JointsMatchless Expansion JointsDual Expansion JointsElbow Pressure Balanced Expansion JointsTechnical InformationInstallation InstructionsMetal Expansion Joint TypesAccessoriesKey ConceptsWarrantyGeneral Ordering Information3

OverviewEngineering CapabilitiesUnaflex utilizes various engineering software programs to provide expansion joints in accordance withcustomer requirements for the utmost reliability. Some of these programs are industry-leading programssuch as Finite Element Analysis (FEA) CAD/CAM and Expansion Joint Manufacturers Association (EJMA).Our products are fully engineered to industry accepted standards.Stress distribution on a double ringwith gussets hardwareTemperature distribution on a floatinghardware assemblyTemperature distribution on afloating ring assemblyStress Distribution on a ring to pipe attachment4

Industry CodesUnaflex expansion joints are manufactured in accordance with EJMA’s latest edition. Other IndustryStandards that Unaflex manufacturing can conform to but are not limited to, include: ASME B31.3 ASME B31.1 MIL-I-45208 MIL-Q-9858 U.S. Coast Guard RequirementsBellows Material SpecificationUnaflex standard bellows material is A/SA240 321ss. Other materials available to Unaflex to manufacturebellows are: A/SA240 304ss A/SA240 304Lss A/SA240 316ss A/SA240 316Lss A/SA240 310S B/SB443 Alloy 625 (Inconel 625) B/SB168 Alloy 600 (Inconel 600) B/SB575 Alloy C276 (Hastelloy C276) B/SB575 Alloy C22 (Hastelloy C22) B/SB127 ALLOY 400 (Monel 400) B/SB409 ALLOY 800 Duplex ALLOY 2205 Hastelloy X Nickel 200 Alloy 20 AL6XNUnaflex welders are qualified in accordance with ASME Section IX latest edition (procedures available forreview upon request). We stock various types of bellows materials, flanges, plates, pipe and threaded rods forfast response and delivery times.Manufacturing CapabilitiesUnaflex maintains an in-house machine shop complete with computer-controlled flame cutting capabilities,a high-speed laser machine and a water jet machine which enable us to provide a full range of metal workingcapabilities.We are able to manufacture bellows from 2” ND to 144” ND as our standard with the capability to manufactureto 222” (18’-6”). We have both die forming and roll forming capabilities. We can perform in house dyepenetrant test, hydro and pneumatic pressure test, helium leak test and PMI (Positive Material Identification)by fully qualified Quality Control Personnel.5

Matchless Expansion JointsUnaflex “MATCHLESS” bellows are manufactured from solution annealed A/SA240 321SS sheetrolled into a tube and seam welded. Multi-ply bellows can be designed and manufactured based on theapplication and design requirements. Unaflex has a wide variety of materials available to design andmanufacture bellows.Unaflex has the most commonly used bellows materials and thicknesses in stock to serve ourcustomers faster. Unaflex “MATCHLESS” bellows conform to the latest EJMA standards.Overall lengths of standard assemblies are based on 150# drilling for both plate flange and raised faceslip on thicknesses. Overall length may change if other types of flanges are requested. Overall lengthsof the SHP and LHD series are based on 300# are raised face slip on flanges.Fixed Plate Flanges–Type 44Unaflex Type 44 expansion joints are with 150# drill carbon steel flanges (AWWAClass D C207) fixed on each end of the expansion joint. Bellows necks are weldeddirectly to the flanges.Floating Plate Flanges–Type 66Unaflex Type 66 expansion joints are provided with 150# drillcarbon steel flanges (AWWA class D C207) floating on each end of the expansion joint.Bellows necks are flared (Vanstone) to retain the flanges.Floating flange arrangement allows use of carbon steel flanges when all wettedmaterials are required to be either Stainless Steel or an alloy material. Floating flangesalso permit bolt hole alignment in the field.Weld Ends–Type 22Unaflex Type 22 expansion joints are provided with carbon steel weld endson each end. Weld ends are beveled per ANSI standards. Schedule 40 (schstd.) pipe is used through 12” ND and 1/4” wall thickness for sizes over 12”unless otherwise specified.Raised Face Slip On Flanges Type–55Unaflex Type 55 expansion joints are provided with150# drill and 300# drill carbon steel raised face flanges.6

Short Style Specification Chart Style 55SLP-Short Style Low PressureSMP-Short Style Medium PressureSHP-Short Style High 00666.53SLPSMPSHP501503003.5SLPSMPSHP4Non-current Movements (in.)Comp.Spring Rates 619921.440.360.18983,5446,95828,938108,343180,2257

Short StyleSpecification ChartStyle 22SLP-Short Style Low PressureSMP-Short Style Medium PressureSHP-Short Style High ht(lbs.)Non-concurrent Movements (in.)Spring Rates ,0088,7159,43019,500,00021,000,00025,000,100

Short Style Specification Chart Style 44 and 66Style 44SLP-Short Style Low PressureSMP-Short Style Medium PressureSHP-Short Style High 503002.5SLPSMPSHP3O.A.L.Weight(lbs.)Style 66Non-concurrent Movements (in.)Comp.Ext.Spring Rates 0,00021,000,00025,000,1009

Long Style Specification Chart Style 55LLP-Long Style Low PressureLMP-Long Style Medium PressureLHP-Long Style High LMPLHPSpring Rates on-concurrent Movements (in.)

Long Style Specification Chart Style 22LLP-Long Style Low PressureLMP-Long Style Medium PressureLHP-Long Style High nt Moments 3001720LLPLMPLHP5015030022LLPLMPLHP24Ext.Spring Rates ,0006Comp.0.4011

Long Style Specification Chart Styles 44 and 66LLP-Long Style Low PressureLMP-Long Style Medium PressureLHP-Long Style High Pressure12Style 1503003.5LLPLMPLHP4Style 66Non-concurrent Movements (in.)Spring Rates 00,0003,600,000

Unaflex Universal Tied Expansion Joints are capable of absorbing greater lateral movementsthan standard bellows type expansion joints. Bellows manufactured of 321 Stainless steel.Assembly designed in accordance with EJMA standards. Available with optional liners or covers.Working temperature 500 F Working pressure up to 150 PSI. Standard bellows material: A/SA240 321ss Design Temperature: 500 F Design Pressure: Up to 150 psig Standard end connections are 150# drill plateflanges (AWWA Class D C207) Overall lengths are based on 150# drillingstandard plate flange thicknesses. Overall length may change if other type offlanges are requested.Optional liners and coversare available upon request.Fixed 150# Plate FlangesNominalSize (in.)LateralMvmt.(in.)O.A.L.(in.)AddedMvmt.Lateral per 1”Spring Rt add’l(lbs./in.) 820.152ForNippleNumber Ends Add Nominalto Flange Size (in.)ofRods Unit Number Ends Addto FlangeofRods Unit 41024162228405264AddedMvmt.Lateral per 1”Spring Rt add’l(lbs./in.) .93752.6253.43754.1875All data is for reference. Specific requirements should be sent to the factory for engineering review13

Externally Pressurized-Type EXS SingleNominalSize (in.)Pressure(PSIG) at 600deg FO.A.L. (in.)21503002.5Axial MovementsAxial Spring Rates (lbs./in.)CompressionExtension150 PSIG Style300 PSIG 454681222,1801,3701,0804,3202,6302,152All technical data subject to change without noticePlease see use, installation, precautions and technical pages14

Externally Pressurized-Type EXD DoubleNominalSize (in.)Pressure(PSIG) at 600deg FO.A.L.21503002.5Axial Movements (in.)Axial Spring Rates (lbs./in.)150 PSIG Style300 PSIG 2,1801,3701,0804,3202,6302,152All technical data subject to change without noticePlease see use, installation, precautions and technical pages15

Externally Pressurized-Anchor DimensionsExternally pressurized expansion joints are capable of absorbing large axial movements at higherpressures due to their bellows being pressurized externally. Absorbing large axial movements requirehigh number of convolutions and this in turn increases the bellows instability. By pressurizing the bellowsexternally, while keeping the unit pressurized internally, bellows column instability problem is eliminated.This type of design also protects the bellows from outside medium, any possible damage duringshipping, handling and installation, and from high flow velocities.Standard end connections are 150# drilling plate flanges (AWWA Class D C207).Overall lengths are based on 150# drilling standard plate flange thicknesses. Overall length may changeif other type of flanges is 5.25”8”9.25”12”1/2”1/2”12”1 ��3/4”3/4”13”1 1”16”2 1/4”1/2”1/2”All technical data subject to change without noticePlease see use, installation, precautions and technical pagesFor sizes 18” and larger consult factory with application details. Units can be provided with pipenipples, other types of flanges, anchor bases and other accessories. Anchors are not designed forpressure forces.Specific requirements should be sent to the factory for engineering review. Spring rates shown arefor EACH bellows.Units come with 3/8” diameter 3000# threaded coupling drains as a standard.16

Series 5000 BPC Bellows Pump Connector AssembliesMetal Bellows Pump Connector DimensionsDash NumberNominal I.D. (in.)Overall Length (in.)Flange Thickness 8-1601063/4-1921263/4-2241481-2561681All technical data subject to change without noticePlease see use, installation, precautions and technical pagesSeries 5000 BPC Pump ConnectorsStandard Operating SpecificationsMax. Operating Pressure: 150 PSIMax. Operating Temperature: 500 FMovements:Axial Compression(2”ND to 8”ND): 0.5”Axial Compression(10”ND to 16”ND):0.75”Axial Extension(All Sizes):0.25”Lateral Offset(All Sizes):0.13”Flanges to mate withANSI B16.5 150# Flange Drilling.If flow velocity exceeds 25 feet per second, Unaflex recommends adding a liner.17

Tube-Flex Engine Exhaust Expansion JointsStyle U-100 Expansion JointsUnaflex “Tube-Flex” Series 7000 Stainless Steel Engine exhaust ExpansionJoints are manufactured from a thin-gauge stainless steel tube. This tubular body isformed into corrugations forming a bellows providing a highly flexible and durableconnector for the extremes of exhausting engine gases.End ConnectionsType WType TType FPType SFPWelding NipplesIPT Threaded Nipples1/2” Thick plate flange (specifyO.D. Bolt Circle, number of BoltHoles and Bolt Hole diameter).Square plate flange (specifyoutside dimension, Bolt patternand Bolt hole diameter).Type W PipeSizeU-100 Style Expansion JointsType T Max.OperatingPressure at 70 FType FPStandardLength (in.)Type SFP ex “Tube-Flex” Style U-100 ExpansionJoints can absorb longitudinal and lateral movement in one cycle. Opposite ends of the joint can movelaterally in opposite directions to complete an expansion cycle. UNAFLEXU-100 joints can be laggedwith fire-proofing insulation for fire protection without affecting flexibility.Features Can be ordered packed (A) or special packed (S) Equipped with rigid or floating flanges (optional) Sizes 4” to 26” I.D.Applications Diesel exhaust steam lines Water and oil lines; *air intakes Air service for boilers Conveying hot liquids18

“Matchless” Dual Unit Expansion JointsUnaflex can custom design and manufacture various types ofexpansion joints based on your needs and requirements of thesystem. Some commonly used non-standard expansion jointtypes are:Dual Expansion JointsDual expansion joints are used where axial movement islarger than can be absorbed by a single expansion joint. Thedual assembly consists of two single bellows connected by aninterconnecting weld end. In some cases, this interconnecting weld end has an integral anchor base.The anchor base is designed to withstand the forces required to move either bellows but not for pressureforces. When no anchor base is used, interconnecting weld end must be anchored with standard pipeanchors.Dual expansion joints can also be used where large amount of movement in any combination (i.e. axial,lateral and angular rotation) is required which cannot be absorbed by a single expansion joint. In this typeof application, the interconnecting weld end is not anchored but the remaining system must be properlyanchored and guided.Elbow Pressure Balanced Unit“MATCHLESS” elbow pressure balanced expansion joints are designed to absorb axial and/or lateraldeflection while continuously restraining pressure force. Balance (out of line) bellows creates an equaland opposite force to the working (in line) bellows.The typical arrangement (as shown) is to have a balance side and a working side separated by anelbowed mid-section. Tie-rods are used to balance and restrain pressure forces.Additional Types of Expansion Joints Available Gimbal Expansion Joint Hinge Expansion Joint In-line Pressure Balanced Expansion Joint Expansion Joints with Pantograph Linkage Expansion Joints with Testable BellowsTwo Ply Testable Bellows Jacketed Expansion Joints19

Installation Do’sInstallation Don’ts Inspect for damage during shipment, i.e., dents,broken hardware, water marks on carton, etc. Do not drop or strike carton. Store in clean dry area where it will notbe exposed to heavy traffic or damagingenvironment. Do not remove shipping bars until installation iscomplete. Do not use hanger lugs as lifting lugs withoutapproval of manufacturer. Use only designated lifting lugs. Make the piping system fit the expansion joint bystretching, compressing, or offsetting the joint tofit the piping. It may be over stressed when thesystem is in service. It is good practice to leave one flange loose untilthe expansion joint has been fitted into position.Make necessary adjustment of loose flangebefore welding. Install joint with arrow pointing in the direction offlow. Install single Van Stone liners pointing in thedirection of flow. Be sure to install a gasketbetween the liner and Van Stone flange as wellas between the matting flange and liner. With telescoping Van Stone line, install thesmallest I.D. liner pointing in the direction offlow. Remove all shipping devices after theinstallation is complete and before any pressuretest of the fully installed system. Remove any foreign material that may havebecome lodged between the convolutions. Refer to EJMA Standards for proper guidespacing and anchor recommendations.20 Do not use chains or any lifting device directlyon the bellows or Bellows cover. Do not allow weld splatter to hit unprotectedbellows. Protect with wet chloride-free asbestos. Do not use cleaning agents that containchlorides. Do not use steel wool or wire brushes onbellows. Do not force-rotate one end of an expansionjoint alignment of bolt holes. Ordinary bellowsare not capable of absorbing torque. Do not hydrostatic pressure test or evacuate thesystem before proper installation of all guidesand anchors. Pipe hangers are not adequate guides. Do not exceed a pressure test of 1-1/2 times therated working pressure of the expansion joint. Do not use shipping bars to retain the pressurethrust if tested prior to installation.

SingleDouble21

Technical InformationMetal Bellows Expansion Joints are designed to absorb a specified amount of movement by the flexingof the thin-gauge convolutions. If proper care is not taken during installation, it may reduce the cycle lifeand the pressure capacity of the expansion joints which could result in a premature failure of the bellowselement or damage to the piping system. The following recommendations are included to avoid the mostcommon errors that occur during installation. When in doubt about an installation procedure, contact themanufacturer for clarification before attempting to install the Expansion Joints.Metal Expansion Joint TypesSingle Expansion Joint: The simplest form of Expansion Joint, of single bellows construction, for thepurpose of absorbing any combination of the three basic movements of the pipe section in which it isinstalled.Universal Expansion Joint: A Universal Expansion Joint is one containing two bellows joined by acommon connector for the purpose of absorbing any combination of the three basic movements: Axialmovement, lateral deflection and angular rotation. Universal Expansion Joints are usually furnished withcontrol rods to distribute the movement between the two bellows of the Expansion Joint and stabilizethe common connector. This definition does not imply that only a Universal Expansion Joint can absorbcombined movement.Double (Dual) Expansion Joint: A double Expansion Joint consists of two bellows joined by a commonconnector which is anchored to some rigid part of the installation by means of an anchor base. Theanchor base may be attached to the common connector either at installation or at time of manufacture.Each bellows acts as a single Expansion Joint and absorbs the movement of the pipe section in whichit is installed independently of the other bellows. Double Expansion Joints should not be confused withUniversal Expansion Joints.Hinged Expansion Joint: A hinged Expansion Joint contains one bellows and is designed to permitangular rotation in one plane only by the use of a pair of pins through hinge plates attached to theExpansion Joint ends. The hinges and hinge pins must be designed to restrain the thrust of theExpansion Joint due to internal pressure and extraneous forces, where applicable. Hinged ExpansionJoints should be used in sets of two or three to function properly.Gimbal Expansion Joint: A gimbal expansion joint is designed to permit angular rotation in any plane bythe used of two pairs of hinges affixed to a common floating gimbal ring. The gimbal ring, hinges and pinsmu

Tefl on Expansion Joints, Fabric Expansion Joints, Metal Hose and Pump Connectors. Unafl ex is one of the few companies in the world that can offer a complete expansion joint and hose product line. This catalog outlines the selection and installation of our Metal Bellows Type Expansion Joints and

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