expension joints engineering appliances

STRESS RELIEF

Engineering Appliances Limited,Unit 11 Brooklands Close, Sunbury-on-Thames Middlesex TW16 7DX

Telephone: 01932 788888 Fax: 01932 761263

e-mail - [email protected]://www.engineering-appliances.com

Engineering Appliances set the standard for product support within theindustry.

All products are supported by a regional network of highlyexperienced engineers who discuss the application and thenrecommend the best solution, both technically and commercially. Sitevisits to check that the installation conforms to the relevant standardsare also arranged.

In a commitment to improve understanding of expansioncompensation, the application of rubber bellows and deaeration EAhave a range of CPD seminars which have been registered by CIBSE.

EA/BOA THICK WALL MULTI PLY EXPANSION JOINTS

STENFLEX NYLON & STEEL WIRE RE-INFORCED RUBBER BELLOWS

IND. MATEU FAN COIL & CHILLED CEILING HOSES

SPIROVENT DEAERATORS & DIRT SEPARATORS

SPIROTOP AUTOMATIC AIR VENTS

EA PRESSURISATION STATIONS & EXPANSION VESSELS

The EA Product Range

Service, Support & Training

A member of

aabbccddeeff

Engineering Appliances29

DISCLAIMEREvery effort has been made to ensure the accuracy of these datasheets, however, we cannot accept responsibility for any errors. Theproduct sketches are only indicative and may not accurately reflect theconstruction of the units. Full dimensional drawings are available uponrequest. Engineering Appliances reserves the right to make productchanges without prior notification.

abcdefCertificate No. 961690

October 2001

Handling• Handle and store so that flange faces are not damaged

• Protect convolutions from accidental mechanical damage,i.e. falling debris

• In storage, prevent foreign matter from becoming lodged inthe inside or outside of convolutions or sleeves.

• Do not roll Bellows Expansion Joints on convolutions.

• Bellow units should be stored under cover, not piled on topof the other, and placed on chocks clear of the floor.

• Protect Stainless Steel from cement, plaster and/or concretemixtures.

• Do not use slings near convolutions

• Do not sling from sizing bars or tie bars.

Installation

• Ensure that you have the correct joint for the application andthat it will accept the calculated movemen t- having dueregard to differences between installation and lowest shut-down temperatures.

• Always check if Expansion Joint is preset or requires coldpull. The majority require cold pull by approximately 50% oftheir rated movement to ensure full utilisation of theirmovement capacity.

• Ensure that the joint will not be subjected to any torsionalmovement that it is not designed to accept Torsion causesdrastic reduction in cyclic life.

• Ensure that the joint is not installed within four pipediameters from any damper, gate valve, butterfly valve etc.If this is impossible heavy sleeves should be fitted.

• Ensure that the joint is not used to correct pipe misalignmentand/or fitting errors outside of design parameters.

• When indicated Install joint with flow arrow pointing in thedirection of the main pipeline flow.

• Ensure that the maximum joint design and test pressure isnot exceeded in line pressure testing and that main anchorsare designed to withstand this pressure. If sections aretested intermediate anchors may have to withstand mainanchor loads

• Not more than one axial expansion joint should be installedbetween any two main anchors without the addition of andintermediate anchors.

• The position of the guides nearest to the expansion joints ismost critical. The first guide must be located within adistance of four pipe-diameters from the expansion joint andthe second within fourteen pipe-diameters from the firstguide.

• Ensure that the guide clearance is not greater than 1.6mm

• Hinge units should be positioned to ensure pivot pins are ina correct plane.

• Protect convolutions from weld splatter, cement, plaster or

concrete mixtures. Ensure that any insulation used is notchloride based. Ensure chloride based fluxes do not comeinto contact with Stainless Steel convolutions. All causerapid pitting corrosion.

• Protect convolutions from mechanical damage

e.g. spanner slip on tightening nuts and bolts.

• Some of our Expansion Joints have a weep hole. If waterdrips from weep holes contact EA immediately. Do not bealarmed, replacement at next routine shutdown will probablysuffice.

• Internal sleeves are recommended where internal flowsexceed the following:

Air, Steam and other Gases

Up to 150mm diameter - 0.05 m/sec. per mm of dia.

Over 150mm diameter - 8 m/sec.

SIurries, Water and other Liquids

Up to 150mm diameter - 0.02 m/sec per mm of dia.

Over 150mm diameter - 3 m/sec

• Remove installation bars, if fitted, prior to commissioning.

More detailed information can be found in the followingstandards.

This list gives key features for your consideration.

EJMA- Expansion Joint Manufacturers Association

BS6129 - The selection and application of bellowsexpansion joints in pressure systems.

BS3974- Pipe supports

*Comprehensive instructions will be supplied with goods.

ENGINEERING APPLIANCES LTD.Expansion Joints - Handling and Installation



If a higher cycle life is required than the 1000 cycles shown in the data sheets use the graph to determine the maximummovement.

Example: An expansion joint for 1000 (5000) full load cycles is selected. At 100% of its movement capacity, the expansionjoint can effect 1000 (5000) full load cycles. If the actual movement reaches only 50% of the chart value, service life willincrease to 18000 (180000) full load cycles. However, if a service life of 650 (3000) full load cycles is satisfactory, theallowable movement will increase to about 110% of the nominal movement.

Cycles 10 000 000

1000 000

180 000

100 000

18 000

10 000

5 000

3 000

1 000

650

1000 cycles

5000 cycles

Movement capacity (%)10 20 30 40 50 60 70 80 90 110 150

100

CYCLE LIFE DIAGRAM

26

REDUCTION FACTORS FOR MOVEMENT& PRESSURE

For temperatures above 110°C, the nominal pressure should be determined from the above graph according to theoperating pressure and temperature.Example: Nominal pressure of 16.0 bar g, operating temperature 300°C. Solution: Considering the reduction factor forpressure, the allowable pressure = 74.2% = 11.9 bar g.

For temperatures above 110°C, the maximum movement of the expansion joint should be reduced according to thetemperature. The above table enables to work out the reduced movements.Example: Axial expansion joint; permitted movement +/- 30mm; temperature 300°C. Solution: taking the reduction ofmovement as from 110°C into account, the operating movement becomes 89.3% of permitted movement = +/- 26.8mm.

Engineering Appliances

EXHAUST EXPANSION JOINTEA93 - 2.5

SpecificationEngineering Appliances type EA93 exhaust bellowsexpansion joint with swivel carbon steel flanges drilled toBS4504-PN6, multi-ply convoluted bellows with inner andouter plies in corrosion resistant stainless steel, unitconstructed to have all stainless steel internal surfaces.

MaterialsBellows: Stainless steel type AISI 321

(1.4541)Flanges: Carbon steelVan stone: Stainless steel

Recommended ApplicationsIdeally suited where large amounts of lateral and/or axialmovement are to be absorbed, in low pressure exhaust,ducting or flue systems.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion jointwill extend under pressure unless restrained which should be by theproper positioning of anchors and guides. The EA93 is supplied at itsfree length and will usually require cold drawing or stretching duringinstallation to allow the expected pipework movement to occur withoutover compressing the unit.

ApplicationsThe EA93 range are flanged pipework expansion joints designed toabsorb movement and axial and/or lateral direction when installed inexhaust ducts, in most applications the pipework movement is due tothermal expansion and contraction.

PerformanceMovements and pressure ratings apply for working temperaturesup to 110°C, at higher temperatures the pressure ratings andmovement capabilities are reduced, at a maximum temperature of500°C pressure rating is reduced to 1.4 bar g.

TolerancesSpring rates: +/-30%Flange drilling: BS4504-PN6Other tolerances on request.

Test PressureThe maximum allowed is 3.75 bar g.Maximum vacuum is 700mbar Abs.

50 285 27 51 35 3 0.5 39 2.5 EA93-050-2.565 460 35 107 30 2 0.5 66 2.5 EA93-065-2.580 575 39 141 39 1 0.6 84 2.5 EA93-080-2.5

100 565 38 113 42 2 0.6 127 2.5 EA93-100-2.5125 530 46 100 36 3 0.6 184 2.5 EA93-125-2.5150 520 50 86 36 5 0.6 262 2.5 EA93-150-2.5200 490 59 67 33 9 0.6 434 2.5 EA93-200-2.5 250 495 64 58 32 13 0.6 660 2.5 EA93-250-2.5300 500 43 36 94 44 0.8 911 2.5 EA93-300-2.5350 470 47 35 89 52 0.8 1101 2.5 EA93-350-2.5400 475 49 33 89 66 0.8 1417 2.5 EA93-400-2.5 450 460 51 25 92 115 0.8 1738 2.5 EA93-450-2.5500 520 32 20 238 231 1.0 2195 2.5 EA93-500-2.5600 515 35 17 238 357 1.0 3145 2.5 EA93-600-2.5700 490 38 15 242 570 1.0 4224 2.5 EA93-700-2.5800 465 41 12 240 867 1.0 5519 2.5 EA93-800-2.5900 435 44 10 242 1355 1.0 7031 2.5 EA93-900-2.5

1000 430 46 10 243 1777 1.0 8539 2.5 EA93-1000-2.5

nominal supplied movement spring bellows wall effective pressure productdiameter length axial lateral rate thickness area rating code

for 1000 for 1000 axial lateralcycles cycles

mm mm +/-mm +/- mm N/mm N/mm mm cm2 bar g


EXHAUST EXPANSION JOINTEA92 - 2.5

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willextend under pressure unless restrained which should be by the properpositioning of anchors and guides. The EA92 is supplied at its free lengthand will usually require cold drawing or stretching during installation toallow the expected pipework movement to occur without overcompressing the unit.

ApplicationsThe EA92 range are flanged pipework expansion joints designed toabsorb movement and axial and/or lateral direction when installed inexhaust ducts, in most applications the pipework movement is due to

thermal expansion and contraction.

PerformanceMovements and pressure ratings apply for working temperatures up to110°C, at higher temperatures the pressure ratings and movementcapabilities are reduced, at a maximum temperature of 500°C pressurerating is reduced to 1.4 bar g.


Test PressureThe maximum allowed is 3.75 bar g.Maximum vacuum is 700mbar Abs.

50 220 40 32 24 6 0.5 38 2.5 EA92-050-2.5 65 230 47 28 23 10 0.5 65 2.5 EA92-065-2.580 240 49 28 31 15 0.6 83 2.5 EA92-080-2.5

100 240 50 22 32 26 0.6 125 2.5 EA92-100-2.5125 240 56 21 30 36 0.6 183 2.5 EA92-125-2.5150 240 59 18 29 51 0.6 261 2.5 EA92-150-2.5200 245 59 14 32 95 0.6 430 2.5 EA92-200-2.5250 240 60 11 34 157 0.6 654 2.5 EA92-250-2.5300 225 59 9 34 254 0.8 910 2.5 EA92-300-2.5350 205 60 9 38 306 0.8 189 2.5 EA92-350-2.5400 210 63 8 37 364 0.8 1408 2.5 EA92-400-2.5450 335 77 14 61 305 0.8 1789 2.5 EA92-450-2.5 500 340 81 14 61 354 1.0 2190 2.5 EA92-500-2.5600 340 65 9 130 1133 1.0 3125 2.5 EA92-600-2.5 700 330 64 7 145 1902 1.0 4420 2.5 EA92-700-2.5800 335 69 7 144 2304 1.0 5492 2.5 EA92-800-2.5900 315 66 6 161 3782 1.0 6914 2.5 EA92-900-2.5

1000 320 70 5 162 4470 1.0 8515 2.5 EA92-1000-2.5

nominal supplied movement spring bellows wall effective pressure productdiameter length axial lateral rate thickness area rating code

for 1000 for 1000 axial lateralcycles cycles

mm mm +/-mm +/- mm N/mm N/mm mm cm2 bar g

SpecificationEngineering Appliances type EA92 exhaust bellowsexpansion joint with swivel carbon steel flanges drilled toBS4504-PN6, multi-ply convoluted bellows with inner andouter piles in corrosion resistant stainless steel, unitconstructed to have all stainless steel internal surfaces.

MaterialsBellows: Stainless steel type AISI 321

(1.4541)Flanges: Carbon steelVan stone: Stainless steel

Recommended ApplicationsFor axial or small amounts of lateral movement in exhaust,ducting or flue systems.


GIMBAL EXPANSION JOINTEA38-16

SpecificationEngineering Appliances type EA38-16 gimbal bellowsexpansion joint with fixed carbon steel flat face flanges drilledto BS4504-PN16, thick wall multi-ply convoluted bellows withinner and outer plies in corrosion resistant stainless steel,gimbal ring and hinges in carbon steel, complete with innersleeves. This expansion joint angulates in two planes.Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)Flanges: Carbon steelInner sleeves: Stainless steelHinges: Carbon steel - Grey PrimerGimbal: Carbon steel - Grey Primer

Recommended ApplicationsThick wall multi-ply expansion joints should be selectedwhere high integrity, safety, and an extended life are ofparamount importance. Suitable for L.T.H.W, M.T.H.W,H.P.H.W and steam.

nominal supplied angular movement spring friction Wall pressure productdiameter length for 1000 rate resistance Thickness rating code

cycles

mm mm +/- deg Nm/deg Nm/bar mm bar g

40** Refer to EA 15 7.5 0.53 1.25 16 EA38-040-16

50** Refer to EA 15 2.4 0.75 1.5 16 EA38-050-16

65** Refer to EA 15 4.2 1.25 1.5 16 EA38-065-16

80** Refer to EA 15 3.6 1.57 1.5 16 EA38-080-16

100 Refer to EA 15 0.8 2.37 1.8 16 EA38-100-16

125 Refer to EA 15 15 2.41 2.1 16 EA38-125-16

150 Refer to EA 15 17 3.41 2.4 16 EA38-150-16

200 Refer to EA 15 36.1 5.63 3.0 16 EA38-200-16

250 Refer to EA 15 65 8.56 3.6 16 EA38-250-16

300 Refer to EA 15 106 11.77 3.6 16 EA38-300-16

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willnot extend under pressure but anchors and guides should be properlypositioned to ensure correct functioning of the unit. Gimbal expansionjoints are installed in twos or two plus an angular expansion joint.

ApplicationsThe EA38 range are flanged gimbal expansion joints designed to beinstalled in steel pipework in twos to absorb a combination of lateralmovements or with an additional angular expansion joint to produce athree pin system that absorbs movement in all directions. In mostapplications the pipework movement is due to thermal expansion andcontraction and/or building settlement.

PerformanceMovements and pressure ratings apply for temperatures up to 110°C, athigher temperatures the pressure ratings and movement capabilities arereduced.


Test PressureThe maximum allowed is 24 bar g.

Non Standard variationsFor applications where the EA38-16 is not suitable EngineeringAppliances can offer variations with higher pressure ratings up to 40 barg, greater movements, different materials, larger sizes up to 1000mm nbor, if required, purpose designed special expansion joints.

* EJMA - Expansion Joint Manufacturers Association.** Not fitted with innersleeves



ANGULAR EXPANSION JOINTEA32-6

SpecificationEngineering Appliances Type EA32-6 angular movementbellows expansion joint with carbon steel flange’s drilled toBS4504 PN16, thick wall multi-ply stainless steelconvoluted bellows, carbon steel hinges, constructed tohave all stainless steel internal surfaces.

MaterialsBellows: Stainless steel type 316Ti

(1.4571)Flanges: Carbon steel, zinc platedVan stone: Stainless steel Hinges: Carbon steel, zinc plated

Recommended ApplicationsThick wall multiply expansion joints should be selectedwhere high integrity, safety, and an extended life are ofparamount importance. Suitable for non-ferrous service,HWS, condensate systems.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willnot extend under pressure but anchors and guides should be properlypositioned to ensure correct functioning of the unit. Angular movementexpansion joints are nearly always installed in twos or threes. (Two orthree pin system).

ApplicationsThe EA32-6 range are flanged angular movement pipework expansionjoints designed to be installed in twos or threes thus absorbingmovements in a lateral direction in copper, or non-ferrous pipework, inmost applications the pipework movement is due to thermal expansionand contraction and/or building movement.



Test PressureThe maximum allowed is 1.5 x pressure rating.

Non Standard variationsFor applications where the EA32-6 is not suitable EngineeringAppliances can offer alternative standard products or purpose designedspecial expansion joints.

40 125 15 1.1 1.25 0.6 6 EA32-040-6

50 129 15 1.5 1.2 0.9 6 EA32-050-6

65 129 15 2.4 1.2 1.6 6 EA32-065-6

80 127 15 2.9 1.2 2.0 6 EA32-080-6

100 127 15 4.3 1.2 2.9 6 EA32-100-6

125 131 15 8.1 1.5 4.4 6 EA32-125-6

nominal supplied movement/ spring bellows wall frictional pressure productdiameter length 1000 cycles rate thickness resistance rating code

mm mm +/- deg. N/deg. mm Nm/bar bar g

Larger bore sizes available on request.


ANGULAR EXPANSION JOINTEA31-16

SpecificationEngineering Appliances type EA31-16 angular movementbellows expansion joint with fixed carbon steel raised faceflanges drilled to BS4504 PN16, thick wall multi-ply stainlesssteel convoluted bellows, carbon steel hinges, complete withstainless steel telescopic inner sleeves. Designed EJMA*

MaterialsBellows: Stainless steel type AISI 316TiFlanges: Carbon steel, zinc plated/grey

primerInner sleeves: Stainless steel BS1449 321/S31Hinges: Carbon steel, zinc plated

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for L.T.H.W., M.T.H.W., H.P.H.W. andsteam.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willnot extend under pressure but anchors and guides should be properlypositioned to ensure correct functioning of the unit. Angular movementexpansion joints are nearly always installed in twos or threes. (Two orthree pin system).

ApplicationsThe EA31-16 range are flanged angular movement pipework expansionjoints designed to be installed in steel pipework in twos or threes thusabsorbing movements in a lateral direction in steel pipework, in mostapplications the pipework movement is due to thermal expansion andcontraction and/or building movement.




Non Standard variationsFor applications where the EA31-16 is not suitable EngineeringAppliances can offer variations with higher pressure ratings up to 40 barg, greater movements, different materials, larger sizes up to 1000mm nbor, if required, purpose designed special expansion joints.

* EJMA - Expansion Joint Manufacturers Association.** Not fitted with innersleeves† Hinges welded to flanges. Hinges & flanges grey primer finish.

040** 137 15 1.5 1.25 0.53 16 EA31-040-16

050** 137 15 2.4 1.5 0.75 16 EA31-050-16

065** 137 15 4.2 1.5 1.25 16 EA31-065-16

080** 137 15 3.6 1.5 1.57 16 EA31-080-16

100 141 15 8 1.8 2.37 16 EA31-100-16

125† 140 15 15 2.1 2.41 16 EA31-125-16

150† 249 15 17 2.4 3.41 16 EA31-150-16

200† 257 15 36.1 3 5.63 16 EA31-200-16

250† 245 10 65 3.6 8.56 16 EA31-250-16

300† 272 10 106 3.6 11.77 16 EA31-300-16

nominal supplied movement/ spring bellows wall frictional pressure productdiameter length 1000 cycles rate thickness resistance rating code

mm mm +/- deg. Nm/deg mm Nm/bar bar g

LATERAL EXPANSION JOINTEA24-16

nominal supplied movement spring bellows wall frictional No. of pressure productdiameter length 1000 cycles rate thickness resistance tie bars rating code

lateral

mm mm +/-mm N/mm mm N/bar bar g

40 358 50 8 1.5 3.9 2 16 EA24-040-16

50 352 46 11 1.8 5.7 2 16 EA24-050-16

65 374 46 18 2.1 9.3 2 16 EA24-065-16

80 354 40 20 2.4 12.2 2 16 EA24-080-16

100 352 35 40 2.4 18.6 2 16 EA24-100-16

125 376 35 59 3.0 25.8 2 16 EA24-125-16

150 366 28 110 3.6 47.6 2 16 EA24-150-16

200 364 22 183 3.0 77.5 3 16 EA24-200-16

250 358 20 302 3.6 137.7 3 16 EA24-250-16

300 354 18 452 3.6 222.5 3 16 EA24-300-16

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willnot extend under pressure but anchors and guides should be properlypositioned to ensure correct functioning of the unit. ApplicationsThe EA24-16 range are flanged pipework expansion joints designed toabsorb lateral movement in two planes, in non-ferrous pipework. In mostapplications pipework movements are due to thermal expansion andcontraction and/or building settlement.

* EJMA - Expansion Joint Manufacturers Association.


TolerancesSpring rates: +/-30%Flange drilling: BS4504 PN16Other tolerances on request.

Test PressureThe maximum allowed is 24.0 bar g.

Non Standard variationsFor applications where the EA24-16 is not suitable EngineeringAppliances can offer variations with higher pressure ratings up to 40 barg, greater movements, different materials, larger sizes up to 1000 nb or,if required, purpose designed special expansion joints.

20 Engineering Appliances

SpecificationEngineering Appliances type EA24-16 universal lateralmovement bellows expansion joint with carbon steel flat flaceswivel flanges drilled to BS4504 PN16, thick wall multi-plystainless steel convoluted bellows, stainless steel centre pipeand carbon steel tie bars. Unit constructed to have allstainless steel internal surfaces. Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)Flanges: Carbon steel, zinc platedTie bars: ISO 898 GR 8.8 Zinc platedSwivel nuts: ST52.3/En50DVan stone: Stainless Steel

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for HWS or condensate. Suitable fornon-ferrous service.





Non Standard variations

For applications where the EA23-25 is not suitable EngineeringAppliances can offer variations with higher pressure ratings up to 40 barg, greater movements, different materials, larger sizes up to 1000 nb or,if required, purpose designed special expansion joints.

nominal supplied movement spring bellows wall frictional No. of pressure product

diameter length 1000 cycles rate thickness resistance tie bars rating codelateral


40 368 50 8 1.5 3.9 2 25 EA23-040-25

50 366 46 11 1.8 5.7 2 25 EA23-050-25

65 382 46 18 1.5 9.3 2 25 EA23-065-25

80 362 40 20 1.5 12.2 2 25 EA23-080-25

100 360 35 40 1.8 18.6 2 25 EA23-100-25

125 382 35 59 1.5 33 2 25 EA23-125-25

150 376 28 110 1.5 55 2 25 EA23-150-25

200 372 22 183 3.0 89.6 3 25 EA23-200-25

250 368 20 302 3.6 160 3 25 EA23-250-25

300 364 18 452 3.6 222.5 4 25 EA23-300-25


InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion jointwill not extend under pressure but anchors and guides should beproperly positioned to ensure correct functioning of the unit. ApplicationsThe EA23-25 range are flanged pipework expansion joints designed toabsorb lateral movement in two planes, in steel pipework. In mostapplications pipework movements are due to thermal expansion andcontraction and/or building settlement.


SpecificationEngineering Appliances Type EA23-25 universal lateralmovement bellows expansion joint with carbon steel fixedflanges drilled to BS4504 PN25, thick wall multi-ply stainlesssteel convoluted bellows, stainless steel centre pipe andcarbon steel tie bars. Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)Flanges: Carbon steel, zinc platedTie bars: ISO 898 Gr 8.8 Zinc platedSwivel nuts: ST52.3/En50D

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for L.T.H.W, M.T.H.W, H.P.H.W.


nominal supplied movement/ spring bellows wall frictional No. of pressure productdiameter length 1000 cycles rate thickness resistance tie bars rating code

lateral N/bar

mm mm +/-mm N/mm mm bar g

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willnot extend under pressure but anchors and guides should be properlypositioned to ensure correct functioning of the unit. ApplicationsThe EA23-16 range are flanged pipework expansion joints designed toabsorb lateral movement in two planes, in steel pipework. In mostapplications pipework movements are due to thermal expansion andcontraction and/or building settlement.







SpecificationEngineering Appliances Type EA23-16 universal lateralmovement bellows expansion joint with carbon steel fixedflanges drilled to BS4504 PN16, thick wall multi-ply stainlesssteel convoluted bellows, stainless steel centre pipe andcarbon steel tie bars. Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)Flanges: Carbon steel, zinc platedTie bars: ISO 898 Gr 8.8 Zinc platedSwivel nuts: ST52.3/En50D

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for L.T.H.W, M.T.H.W, H.P.H.W.

40 368 50 8 1.5 3.9 2 16 EA23-040-16

50 366 46 11 1.8 5.7 2 16 EA23-050-16

65 382 46 18 2.1 9.3 2 16 EA23-065-16

80 362 40 20 2.4 12.2 2 16 EA23-080-16

100 360 35 40 2.4 18.6 2 16 EA23-100-16

125 382 35 59 3.0 25.8 2 16 EA23-125-16

150 376 28 110 3.6 47.6 2 16 EA23-150-16

200 372 22 183 3.0 77.5 3 16 EA23-200-16

250 368 20 302 3.6 137.7 3 16 EA23-250-16

300 364 18 452 3.6 222.5 3 16 E A23-300-16



SpecificationEngineering Appliances Type EA20-25 universal lateralmovement bellows expansion joint with fixed carbon steelraised face flanges drilled to BS4504 PN25, thick wall multi-plystainless steel convoluted bellows, complete with stainless steeltelescopic inner sleeves. Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)Flanges: Carbon steel, zinc platedInner sleeves: Stainless steel 321/S31Tie bars: ISO 898 Gr 8.8 Zinc platedSwivel nuts: ST52.3/En50DIntermediate pipe: 40-80 A312 TP 316L

100 & above ASTM A106 Gr.B

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for M.T.H.W., H.P.H.W. and steam.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willnot extend under pressure but anchors and guides should be properlypositioned to ensure correct functioning of the unit.

ApplicationsThe EA20-25 range are flanged pipework expansion joints designed toabsorb lateral movement in two planes, in steel pipework. In mostapplications pipework movements are due to thermal expansion andcontraction and/or building settlement.





Non Standard variationsFor applications where the EA20-25 is not suitable EngineeringAppliances can offer variations with higher pressure ratings up to 40 barg, greater movements, different materials, larger sizes up to 1000 nb or,required, purpose designed special expansion joints.

nominal supplied movement/ spring bellows wall frictional No. of pressure productdiameter length 1000 cycles rate thickness resistance tie bars rating code

lateral


065 502 75 8 2.1 6.5 2 25 EA20-065-25

080 532 75 7 1.8 7.6 2 25 EA20-080-25

100 470 56 20 2.4 26 2 25 EA20-100-25

125 502 58 25 3.0 35.4 2 25 EA20-125-25

150 542 53 40 3.6 63 2 25 EA20-150-25

200 592 50 44 3.0 94 3 25 EA20-200-25

250 654 50 65 3.6 149 3 25 EA20-250-25

300 694 50 44 3.6 170 4 25 EA20-300-25



SpecificationEngineering Appliances Type EA20-16 universal lateralmovement bellows expansion joint with fixed carbon steelraised face flanges drilled to BS4504 PN16, thick wall multi-ply stainless steel convoluted bellows, carbon steel centrepipe and tie bars, complete with stainless steel telescopicinner sleeves. Designed to EJMA*.

MaterialsBellows: Stainless steel type 316Ti (1.4571)Flanges: Carbon steel, zinc platedInner sleeves: Stainless steel BS1449 321/S31Tie bars: ISO 898 Gr 8.8 Zinc platedSwivel nuts: ST52.3/En50DIntermediate pipe: 40-80 A312 TP 316L

100 & above ASTM A106 Gr.B

Recommended ApplicationsThick wall multi-ply expansion joints should be selectedwhere high integrity, safety, and an extended life are ofparamount importance. Suitable for L.T.H.W., M.T.H.W.,H.P.H.W. and steam.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework must be followed. This expansion joint willnot extend under pressure, but anchors and guides should be properlypositioned to ensure correct functioning of the unit. ApplicationsThe EA20-16 range are flanged pipework expansion joints designed toabsorb lateral movement in two planes, in steel pipework. In mostapplications pipework movements are due to thermal expansion andcontraction and/or building settlement.

* EJMA- Expansion Joint Manufacturers Association.

** Not Fitted with Inner sleeves.




Non Standard VariationsFor applications where the EA20-16 is not suitable, EngineeringAppliances can offer variations with higher pressure ratings up to 40 bar g,greater movements, different materials, larger sizes up to 1000 nb or ifrequired, purpose designed special expansion joints.

40** 428 85 4.1 1.8 3.0 2 16 EA20-040-16 75

50** 438 85 5.1 2.1 4.2 2 16 EA20-050-16 75

65** 468 86 7.2 2.1 6.8 2 16 EA20-165-16 85

80** 468 87 9.0 2.4 8.6 2 16 EA20-080-16 85

100 482 76 11.7 2.4 12.5 2 16 EA20-100-16 100

125 502 76 17.0 2.7 17.6 2 16 EA20-125-16 110

150 512 59 25.0 2.4 24.5 2 16 EA20-150-16 165

200 588 52 44.0 3.0 72.0 3 16 EA20-200-16 185

250 656 52 65.0 3.6 130.0 3 16 EA20-250-16 230

300 690 52 44.0 3.6 170.0 3 16 EA20-300-16 230

nominal supplied movement/ spring bellows wall frictional No. of pressure product additionaldiameter length 1000 cycles rate thickness resistance tie bars rating code movement

mm mm +/-mm N/mm mm N/bar bar g mm†

† For an additional +/- 25mm Movement add to length


Restrained Expansion Joints

Restrained Expansion JointsRestrained Expansion Joints are designed not to extendwhen an internal pressure is applied. The pressure thrustreaction force is restrained by means of hinges or tie bars,Fig. 1.

Restrained Expansion Joints are versatile and can beused in many different configurations and combinations.The loads imposed on anchors is generally much lowerthan for unrestrained types.

Movement in angular expansion joints and lateralexpansion joints is achieved by controlled angulation oftwo bellows in opposite directions. They can only absorbmovement at 90° to their axis.

Angular expansion joints have to be used in pairs (2 pinsystem) or in threes (3 pin system), Fig 2.

Lateral expansion joints included in this manualincorporate two bellows which are restrained using tiebars. They can move in two planes which makes themextremely versatile, Fig. 3. They are sometimes calledarticulated expansion joints.

The anchor load imposed by all restrained units is thesum of their spring rate plus restraint friction losses.However, generally the frictional loads caused by the pipesupports are by far the largest component of anchor load.

No special guiding is required and they are thereforesuitable for mounting at high level or wherever guidingand anchoring may prove difficult or expensive.

Restrained expansion joints are more complex than axialunits and are therefore more expensive. However, tooffset the higher cost, savings can result from a reducedneed for guiding anchoring and number of expansionJoints.

Fig 1Fig 3

Fig 2

Movement


AXIAL EXPANSION JOINTEA06-25

SpecificationEngineering Appliances Type EA06-25 axial movementbellows expansion joint with fixed carbon steel raised faceflanges drilled to BS4504 PN25, thick wall multi-ply stainlesssteel convoluted bellows, complete with stainless steeltelescopic inner sleeves. Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)

Flanges: Carbon steel, zinc platedInnersleeves: Stainless steel 321/S31

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for M.T.H.W., H.P.H.W. and steam.

For small axial movement.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willextend under pressure unless restrained which should be by the properpositioning of anchors and guides. The EA06-25 is supplied at its freelength and will usually require cold drawing or stretching duringinstallation to allow the expected pipework movement to occur withoutover compressing the unit.

ApplicationsThe EA06-25 range are flanged pipework expansion joints designed toabsorb axial movement in steel pipework, in most applications thepipework movement is due to thermal expansion and contraction.





Non Standard variationsFor applications where the EA06-25 is not suitable EngineeringAppliances can offer variations with higher pressure ratings up to 40 barg, greater movements, different materials, larger sizes up to 1000 nb or,if required, purpose designed expansion joints.

40 137 15 175 1.5 29.6 25 EA06-040-25

50 137 16 205 1.5 41.7 25 EA06-050-25

65 137 17 220 1.5 69.4 25 EA06-065-25

80 137 19 147 1.5 86.9 25 EA06-080-25

100 137 20 214 1.8 131.5 25 EA06-100-25

125 140 20 264 2.1 192.6 25 EA06-125-25

150 249 30 215 1.8 272.3 25 EA06-150-25

200 257 31 286 3 480.1 25 EA06-200-25

250 241 33 344 3.6 684.4 25 EA06-250-25

300 268 32 406 3.6 941.3 25 EA06-300-25

nominal supplied movement/ spring bellows wall effective pressure productdiameter length 1000 cycles rate thickness area rating code

mm mm +/-mm N/mm mm cm2 bar g



SpecificationEngineering Appliances Type EA07-16 axial movementbellows expansion joint with swivel carbon steel flat faceflanges drilled to BS4504 PN16, thick wall multiply stainlesssteel convoluted bellows. Designed to EJMA*

MaterialsBellows: Stainless steel 316Ti (1.4571)Flanges: Carbon steel, galvanisedVan Stone: Stainless steel

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for Non-ferrous service such as coldwater systems, hot water systems or condensate.


ApplicationsThe EA07-16 range are flanged pipework expansion joints designed toabsorb axial movements in non ferrous pipework, in most applicationsthe pipework movement is due to thermal expansion and contraction.






40 144 17 133 1 27 16 EA07-040-16

50 144 17 130 1 40 16 EA07-050-16

65 142 18 130 1 66 16 EA07-065-16

80 140 22 120 1.25 85 16 EA07-080-16

100 136 22 144 1.25 121 16 EA07-100-16

125 140 24 155 1.5 183 16 EA07-125-16

150 140 23 148 1.5 247 16 EA07-150-16




SpecificationEngineering Appliances Type EA08-16 axial movementbellows expansion joint with fixed carbon steel raised faceflanges drilled to BS4504 PN16, thick wall multiply stainlesssteel convoluted bellows, complete with stainless steeltelescopic inner sleeves. Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)Flanges: Carbon steel, zinc platedInner Sleeves: Stainless steel 321/S31

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for L.T.H.W., M.T.H.W., H.P.H.W. andsteam.

For large axial movement.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willextend under pressure unless restrained which should be by the properpositioning of anchors and guides The EA08-16 is supplied at its freelength and will usually require cold drawing or stretching duringinstallation to allow the expected pipework movement to occur withoutover compressing the unit.

ApplicationsThe EA08-16 range are flanged pipework expansion joints designed toabsorb particularly large axial movements in steel pipework, in mostapplications the pipework movement is due to thermal expansion andcontraction.






65 278 38 45 1 68.5 16 EA08-065-16

80 278 40 50.5 1.25 87.4 16 EA08-080-16

100 272 44 51 1.25 129.3 16 EA08-100-16

125 272 46 64.5 1.5 189.7 16 EA08-125-16

150 258 50 155 2.7 274.1 16 EA08-150-16

200 246 54 136 2.4 438.2 16 EA08-200-16

250 245 57 122 2.5 674.3 16 EA08-250-16

300 233 52 186 2.7 931.6 16 EA08-300-16






SpecificationEngineering Appliances Type EA06-16 axial movementbellows expansion joint with fixed carbon steel raised faceflanges drilled to BS4504 PN16, thick wall multi-ply stainlesssteel convoluted bellows. Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)

Flanges Carbon steel, zinc plated

Recommended ApplicationsThick wall multi-ply expansion joints should be selectedwhere high integrity, safety, and an extended life are ofparamount importance. Suitable for L.T.H.W., M.T.H.W.,H.P.H.W.

For small axial movement.


ApplicationsThe EA06-16 range are flanged pipework expansion joints designed toabsorb axial movements in steel pipework, in most applications thepipework movement is due to thermal expansion and contraction.For steam applications the EA06-16 can be fitted with inner sleeves.


PerformanceMovements and pressure ratings apply for temperatures up to 110°C, athigher temperatures the pressure ratings and movement capabilities arereduced, details of derating factors are available on page 26.



Non Standard variationsFor applications where the EA06-16 is not suitable EngineeringAppliances can offer variations with higher pressure ratings up to 40 barg, greater movements, different materials, larger sizes up to 1000 nb or, ifrequired, purpose designed special expansion joints.

65 137 19 90 1 68.5 16 EA06-065-16

80 137 20 101 1.25 87.4 16 EA06-080-16

100 134 22 102 1.25 129.3 16 EA06-100-16

125 134 22 129 1.5 189.7 16 EA06-125-16

150 172 35 114 1.5 267.1 16 EA06-150-16

200 194 37 169 2.1 443.4 16 EA06-200-16

250 188 40 163 2.5 674.3 16 EA06-250-16

300 194 39 248 2.7 931.6 16 EA06-300-16





SpecificationEngineering Appliances type EA05-16 axial movementbellows expansion joint with weld ends to BS1387, BS3600,thick wall multi-ply convoluted stainless steel bellows.Designed to EJMA*.

MaterialsBellows: Stainless steel 316Ti (1.4571)Weld ends: Carbon steel, A106Gr.BAlso available with grooved ends to suit victaulic, zero flex.

Recommended ApplicationsThick wall multiply expansion joints should be selected wherehigh integrity, safety, and an extended life are of paramountimportance. Suitable for L.T.H.W., M.T.H.W., H.P.H.W.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion jointwill extend under pressure unless restrained which should be by theproper positioning of anchors and guides. The EA05-16 is supplied at itsfree length and will usually require cold drawing during installation toallow the expected pipework movement to occur without overcompressing the unit.

ApplicationsThe EA05-16 range are weld-end pipework expansion joints designed toabsorb axial movements in steel pipework, in most applications thepipework movement is due to thermal expansion and contraction. Endsare available grooved to suit victualic zero flex.



TolerancesSpring rates: +/-30%Tube ends: A106Gr.B STD SchOther tolerances on request.



65 253 19 90 1 68.5 16 EA05-065-16

80 285 20 101 1.25 87.4 16 EA05-080-16

100 344 22 102 1.25 129.3 16 EA05-100-16

125 344 23 129 1.5 189.7 16 EA05-125-16

150 390 35 114 1.5 267.1 16 EA05-150-16

200 294 37 169 2.1 443.3 16 EA05-200-16

250 288 40 163 2.5 674.3 16 EA05-250-16

300 294 39 248 2.7 931.6 16 EA05-300-16





SpecificationEngineering Appliances type EA16-16 axial movement bellowsexpansion joint with fixed carbon steel flanges drilled to BS4504PN16 both ends, multi-ply stainless steel convoluted bellows,aluminium outer sleeve with integral length limit device, heavyduty carbon steel inner sleeve.

MaterialsBellows: Stainless steel 321 (1.4541)Connectors: Carbon steelOuter sleeve: AluminiumInner sleeve: Carbon steel

Recommended ApplicationsFor small bore carbon steel pipework, ideal where guiding isdifficult and the bellows is in an exposed position.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion jointwill extend under pressure unless restrained which should be by theproper positioning of anchors and guides. This unit is internally guidedso some liberty may be taken with the normal guiding rules. The firstguide can be positioned at the intermediate guide spacing or within 2-3m whichever is the smaller. This unit is supplied fixed by a removableclip at its maximum length, the maximum length should not be exceededduring working conditions, the limit clip should be removed afterinstallation of the unit.

ApplicationsThe EA16-16 range are small bore pipework expansion joints designedto absorb movement in an axial direction, in most applications thepipework movement is due to thermal expansion and contraction.

PerformanceMovements and pressure ratings apply for temperatures up to 110°C, athigher temperatures the pressure ratings and movement capabilities arereduced, details of derating factors are available on request.

TolerancesSpring rates: +/- 30%Flange drilling: BS4504 PN16Other tolerances on request.

Test PressureThe maximum allowed is 24 bar g for 15 to 32 nb, and 15 bar g for the 40nb and 50 nb sizes.

Non Standard variationsFor applications where the EA16 is not suitable Engineering Appliancescan offer alternative products.

15 320 -45 -25 4.4 4.5 16 EA16-015-16

20 326 -45 -25 4.8 7.5 16 EA16-020-16

25 326 -45 -25 5.2 9.5 16 EA16-025-16

32 330 -45 -25 5.6 18.0 16 EA16-032-16

40 344 -45 -25 8.0 21.0 10 EA16-040-10

50 350 -45 -25 8.8 31.0 10 EA16-050-10

nominal supplied axial movement spring effective pressure product diameter length for 1000 for 5000 rate area rating code

cycles cycles

mm mm mm mm N/mm cm2 bar g



SpecificationEngineering Appliances Type EA15-16 axial movement bellows expansion joint with fixed carbon steel BSP male taper connectorsboth ends, multi-ply stainless steel convoluted bellows, aluminium outer sleeve with integral length limit device, heavy duty carbonsteel inner sleeve.

MaterialsBellows: Stainless steel 321 (1.4541)Connectors: Carbon steelOuter sleeve: AluminiumInner sleeve: Carbon steel

Recommended ApplicationsFor small bore carbon steel pipework, ideal where guiding is difficult and the bellows is in an exposed position.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion jointwill extend under pressure unless restrained which should be by theproper positioning of anchors and guides. This unit is internally guidedso some liberty may be taken with the normal guiding rules. The firstguide can be positioned at the intermediate guide spacing or within 2-3m whichever is the smaller. This unit is supplied fixed by a removableclip at its maximum length, the maximum length should not beexceeded during working conditions. Particular care should be taken toavoid excessive torsion forces being applied to this expansion jointeither during tightening of the connectors or during the installation ofadjacent pipework, the limit clip should be removed after installation ofthe unit.

ApplicationsThe EA15-16 range are small bore threaded pipework expansion jointsdesigned to absorb movement in an axial direction, in most applicationsthe pipework movement is due to thermal expansion and contraction.


TolerancesSpring rates: +/- 30%Threads: BS21, ISO 7/1Other tolerances on request.

Test PressureThe maximum allowed is 24 bar g for 15 to 32 nb, and 15 bar g for the40 nb and 50 nb sizes.

Non Standard variationsFor applications where the EA15 is not suitable Engineering Appliancescan offer alternative products.

15 306 -45 -25 4.4 4.5 16 EA15-015-16

20 306 -45 -25 4.8 7.5 16 EA15-020-16

25 316 -45 -25 5.2 9.5 16 EA15-025-16

32 316 -45 -25 5.6 18.0 16 EA15-032-16

40 336 -45 -25 8.0 21.0 10 EA15-040-10

50 346 -45 -25 8.8 31.0 10 EA15-050-10

nominal supplied axial movement spring effective pressure productdiameter length for 1000 for 5000 rate area rating code

cycles cycles


AXIAL EXPANSION JOINTEA15-MM

SpecificationEngineering Appliances Type EA15-MM axial movement bellows expansion joint with Mannesmann tubing both ends, multi-plystainless steel convoluted bellows, aluminium outer sleeve with integral length limit device, heavy duty carbon steel inner sleeve.

MaterialsBellows: Stainless steel 321 (1.4541)Connectors: Stainless steel 316 (1.4401)Outer sleeve: AluminiumInner sleeve: Carbon steel

Recommended ApplicationsFor small bore Mannesman pipework, ideal where guiding is difficult and the bellows is in an exposed position.

nominal supplied axial movement spring effective pressure productdiameter length for 1000 for 5000 rate area rating code


15* 328 -45 -25 4.4 4.5 16 EA15-015-MM

22 320 -45 -25 4.8 7.5 16 EA15-022-MM

28 320 -45 -25 5.2 9.5 16 EA15-028-MM

35 350 -45 -25 5.6 18.0 16 EA15-035-MM

42* 390 -45 -25 8.0 21.0 10 EA15-042-MM

50 390 -45 -25 8.8 39.0 10 EA15-050-MM

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willextend under pressure unless restrained which should be by the properpositioning of anchors and guides. This unit is internally guided so someliberty may be taken with the normal guiding rules. The first guide can bepositioned at the intermediate guide spacing or within 2-3m whichever isthe smaller. This unit is supplied fixed by a removable clip at its maximumlength, the maximum length should not be exceeded during workingconditions. Particular care should be taken to avoid excessive torsionforces being applied to this expansion joint either during tightening of theconnectors or during the installation of adjacent pipework, the limit clipshould be removed after installation of the unit.

ApplicationsThe EA15-MM range are small bore Mannesmann tube ended pipeworkexpansion joints designed to absorb movement in an axial direction, inmost applications the pipework movement is due to thermal expansionand contraction.


TolerancesSpring rates: +/- 30%Other tolerances on request.


Non Standard variationsFor applications where the EA15-MM is not suitable EngineeringAppliances can offer alternative products.

* Joints supplied with Mannesman slip coupling connector




InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willextend under pressure unless restrained which should be by the properpositioning of anchors and guides. This unit supplied at maximum lengthis fixed by a removable clip. The maximum length should not beexceeded during working conditions. This unit is internally guided sosome liberty may be taken with the normal guiding rules. The first guidecan be positioned at the intermediate guide spacing or within 2-3mwhichever is the smaller. The flow arrow should be upwards in thedirection of the flow.

ApplicationsThe EA04-16 range are small bore pipework expansion joints designedto absorb movements in an axial direction, in most applications thepipework movement is due to thermal expansion and contraction. It isparticularly designed for drinking and potable water supply in sanitaryinstallations, perimeter heating, radiator runs and small condensatelines.

PerformanceMovements and pressure ratings apply for temperatures up to 110°C, athigher temperatures the pressure ratings and movement capabilitiesare reduced.

TolerancesSpring rates: +/-30%Other tolerances on request.


Non Standard variationsNOT AVAILABLE

15 164 -18 5.9 3.1 16 EA04-015-16

18 168 -18 7.7 4.1 16 EA04-018-16

22 178 -18 18.7 5.7 16 EA04-022-16

28 183 -18 14.5 8.8 16 EA04-028-16

35 290 -25 4.4 17.2 16 EA04-035-16

42 305 -25 6.8 25.3 16 EA04-042-16

nominal supplied axial movement spring effective pressure productdiameter length for 5000 cycles rate area rating code

mm mm mm N/mm cm2 bar g

SpecificationEngineering Appliances Type EA04-16 axial movement bellows expansion joint with copper capillary ends, bronze convolutedbellows, copper inner and outer sleeve, anti-torsion and pretension devices fitted. All welded construction.

Materials

Bellows: bronzeConnectors: copperOuter sleeve: copperInner sleeve: copper

Recommended ApplicationsSmall diameter non-ferrous pipework, ideal for applications where guiding is difficult and the expansion joint is exposed. Suitable for high pressure applications up to 16 bar g.

nominal supplied movement/ spring backing nut adaptor effective pressure productdiameter length 1000 cycles rate hex A/F hex A/F area rating code

mm mm mm N/mm mm mm cm2 bar g

15 109 -16 42 44 25 5.5 6 EA01/02-015-6

20 124 -20 54 50 32 6.4 6 EA01/02-020-6

25 152 -26 98 55 38 9.5 6 EA01/02-025-6

32 167 -28 83 70 46 15 6 EA01/02-032-6

40 179 -29 89 75 55 19.5 6 EA01/02-040-6

50 207 -37 105 90 65 32 6 EA01/02-050-6

AXIAL EXPANSION JOINTEA01/02 - 6

SpecificationEngineering Appliances Type EA01/02 axial movementbellows expansion joint with integral BSP female swivelunions both ends complete with fibre washers, and stainlesssteel convoluted bellows.

MaterialsBellows: Stainless steel 316Ti (1.4571)Union adaptors: EA01–malleable iron

EA02–gun metalUnion Backing Nuts: EA01–malleable iron

EA02–malleable iron

Recommended ApplicationsSmall diameter steel/non–ferrous pipework in heating andchilled water systems. Cold or hot water services andcondensate lines.

EA02 for non ferrous service.

InstallationRecommendations contained in our literature on correct installation ofexpansion joints in pipework should be followed. This expansion joint willextend under pressure unless restrained which should be by the properpositioning of anchors and guides, the unit is supplied at its maximumlength, which should not be exceeded during installation or the workingconditions. Particular care should be taken to avoid excessive torsionforces being applied to this expansion joint either during tightening of theunions or during installation of adjacent pipework.

ApplicationsThe EA01/02 range are small bore threaded pipework expansion jointsdesigned to absorb movement in an axial direction, in most applicationsthe pipework movement is due to thermal expansion and contraction.

PerformanceMovements and pressure ratings apply for temperatures up to 20°C,at higher temperatures the pressure ratings and movementcapabilities are reduced.

TolerancesSpring rates: +/-30%Threads: BS21, ISO 7/1Other tolerances on request.


Non-Ferrous pipeworkFor non-ferrous pipework, such as copper, the EngineeringAppliances type EA02 has a gunmetal adaptor and hence onlygunmetal and stainless steel internal surfaces.

Non Standard variationsFor applications where the EA01/02 is not suitable EngineeringAppliances can offer alternative standard products or purposedesigned special expansion joints.


Unrestrained Expansion Joints


Quality is Assured EA has a Lloyds Register accredited Quality ManagementSystem to ISO 9001. BOA, IWK and other major suppliersare accredited to ISO 9001. EA expansion joints aredesigned to the American EJMA standard, whichincorporates large safety factors. All products aremanufactured and finished to the highest standard usingapproved weld procedures to EN 288. Material certificatesto EN 10204 and pressure test certificates are availableon request.

Advice ServiceWe have many years experience in analysing pipeworkexpansion compensation. We stake our reputation on onlyincluding expansion joints where there is no alternative.Our engineers can often reduce the cost of a systemproviding they are involved at an early design stage, asthe most economical solution should not just consider thecost of the expansion joint but also take into account thecost of anchoring, guiding and installation. Frequentlyexpansion joints are not required and can be designed outby using the natural flexibility of the pipework. Our AreaEngineers are always pleased to advise you.

SECTION 1

Unrestrained Expansion JointsAxialExpansion Joints are the simplest way of absorbingexpansion in pipework systems. They are designed to beinstalled in a straight run of pipe where they absorb axial(or longitudinal) expansion by being compressed. The factthat they can only compensate for expansion in one planelimits their application and offers little opportunity forengineering initiative (Fig. 1 ).

Fig. 1 14D 4D 4D 14D

When applying an axial expansion joint it is crucial tounderstand the concept of pressure thrust. Underpressure a convoluted bellows acts like a piston (Fig. 2)and will extend unless it is restrained. Axial expansionjoints are unrestrained and therefore the pipework needsto be securely anchored to resist this tendency to extend.The forces exerted by an unrestrained expansion joint canbe very significant and is calculated as follows :-

Pressure thrust = Effective area of bellows x pressure

Fpt = CSA (Cm2) x P (bar) kgf

The effective cross sectional area of the bellows is givenin the data sheets. For anchor load calculations alwaysuse the highest pressure, usually the test pressure, andtake into consideration the total thrust from multiple pipes.

Example: A pipe system which has a 150mm n.b. flow and100mm n.b. return, with an axial bellowsinstalled in both at a test pressure of 15 bar. Thetotal thrust exerted by both bellows is:- (267.1cm2 + 129.3cm2) x 15.= 58.8 kN)

If it is not possible to build anchors of sufficient strength, arestrained expansion joint must be used. It is usually eithernot possible or uneconomical to use unrestrained units athigh level.Axial bellows also introduce an instability into the pipe runand therefore the rules on guiding detailed in BS 6129must be strictly adhered to. (Also see EA’s Guide to theuse of Expansion Joints).The first guide should be spaced 4 pipe diameters from theexpansion joint, and the second 14 pipe diameter from thefirst guide, Fig. 1.As this may not always be possible for small diameter piperuns, EA have introduced a range of bellows where theabove rule can be stretched (see data sheet for EA15, 16,04).

For further information, please consult the EA Guide to theuse of Expansion Joints or contact one of our engineers.

Fig. 2

Thick Wall Multi-ply Bellows - The Right ChoiceEngineering Appliances has been supplying expansion joints for Mechanical Building Services,Power Generation and Industrial Process Systems for 50 years. Our experience and knowledge ofcustomer requirements has led us to choose thick wall spirally wrapped multi-ply bellowsmembranes, being the most technically advanced available anywhere. Such membranes haveadvantages over all conventional single and multi-ply designs where only 2 or 3 ply technology isused. Thick wall multi-ply membranes are typically 2 to 3mm thick and 6-12 ply resulting in the finalproduct being robust, immensely strong yet highly flexible.

The membranes have thick walls and yet due to the many layers or plies the bellows remain veryflexible, therefore the overall length is short and the thermal cycle life is high.

The spiral wrapping gives the bellows an in-built early warning which indicates when the inner plyhas been damaged. The visual sign being a slow weep from a hole in the outer layer only, drilledfor this purpose. A catastrophic failure is therefore virtually impossible.

INTRODUCTION


Weephole

Cutting of the thin stainless steel stripwhich forms the plies of the bellows

Increased safety because ofthe spiral and weephole

Thick wall multi-ply bellows after forming

Welding of the outer andinner ply

spiralouterply

innerply

Preparation of the spiral and welded innerand outer ply

Assembly of the single elements

CONSTRUCTION OF BOA THICK WALL SPIRALLY WOUND MULTI-PLY BELLOWS

Elastomer formingof the bellows

High Degree of Safety, No Unscheduled Shutdowns, High Flexibility, Large Movements, Low Forces, Compact Dimensions

CONTENTS

Unrestrained Expansion Joints

Restrained Expansion Joints

Exhaust Expansion Joints

Product Type Product Code Page No.

Small Bore Expansion joint Unsleeved, Screwed EA01/02-6 ...........................5Small Bore Expansion joint For Copper EA04-16 ..............................6Small Bore Expansion joint For Mannesmann EA15-MM ............................7Small Bore Expansion joint For Steel, Screwed EA15-16 ..............................8Small Bore Expansion joint For Steel, Flanged EA16-16 ..............................9

Axial Expansion Joint Weld End/Victaulic EA05-16 ..............................10Axial Expansion Joint Flanged EA06-16 ..............................11Axial Expansion Joint Flanged EA08-16 ..............................12Axial Expansion Joint Non Ferrous EA07-16 ..............................13Axial Expansion Joint Flanged EA06-25 ..............................14


Lateral Expansion Joint Long Movement EA20-16 ..............................16Lateral Expansion Joint Long Movement EA20-25 ..............................17Lateral Expansion Joint Short Movement EA23-16 ..............................18Lateral Expansion Joint Short Movement EA23-25 ..............................19Lateral Expansion Joint Non Ferrous EA24-16...............................20Angular Expansion Joint Flanged EA31-16...............................21Angular Expansion Joint Non Ferrous EA32-6 ................................22Gimbal Expansion Joint Flanged EA38-16 ..............................23


Exhaust Expansion joint Axial, Short EA92-2.5 .............................24Exhaust Expansion Joint Axial, Lateral EA93-2.5 .............................25

DISCLAIMEREvery effort has been made to ensure the accuracy of these data sheets, however we cannot accept responsibility for any errors. The productsketches are only indicative and may not accurately reflect the construction of the units. Full dimensional drawings are available on request.Engineering Appliances reserves the right to make product changes without prior notification.

October 2001


InformationReduction Factors - Pressure, Movement ............................................26Derating Factors - Life ............................................27Expansion Joints - Handling and Installation ............................................28

SPIROVENT

SPIROVENT

STRESS RELIEF

Product DataPART 1

EXPANSIONJOINTS

expension joints engineering appliances

Documents

correct joint

maximum joint design

bellows expansion joints

application of rubber

product support

application andthat

test pressure isnot

line pressure testing