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Rubber Pipe Expansion Joints

Rubber pipe expansion joints are often used to compensate for minor misalignment and offset. The design is chemical and abrasion resistant accommodates for higher pressures than the standard metal expansion joints and eliminates sediment buildup. They have an integrally flanged design where no gaskets are required and are designed to absorb noise, vibration, and shock. This single, wide arch, spool-type rubber expansion joint is provided with hot-dipped galvanized retaining rings.

Rubber Expansion joint Table

Nominal Pipe Size Expansion JointNominal Face-to-face
Minimum Length
MOVEMENTSSPRING RATES
AXIAL COMPRESSIONAXIAL EXTENSIONLATERAL DEFLECTION DEGREES OF ANGULAR MOVEMENTDEGREES OF ANGULAR MOVEMENTDEGREES OF TORSIONAL MOVEMENTAXIAL COMPRESSIONAXIAL EXTENSIONLATERAL DEFLECTIONANGULAR MOVEMENT
inmminmminmminmminmmlbs/inN/mmlbs/inN/mmlbs/inN/mmft-lbs/ degNm/deg
1*2561507/16197/16115/81634.431763122839262460.030.04
1-1/4*3261507/16197/16115/81628.132203828750328570.0750.1
1-1/24061507/16197/16115/81623.132654634460393690.110.15
25061507/16197/16115/81618.133175541472525920.220.3
2-1/26561507/16197/16115/81614.4339769517905711000.3750.51
37561507/16197/16115/81612.53476836211096181080.60.81
3-1/28861507/16197/16115/81610.43556977241276661170.9751.32
410061507/16197/16115/8169.436361118281457141251.4251.93
512561507/16197/16115/8167.53793139103218181914334
615061507/16197/16115/8166.23953167123921792516257
820061501-3/163011/16175/8166.931059185137824111291981013
1025082001-3/163011/16173/4195.631324232172230212132121824
1230082001-3/163011/16173/4194.731588278206636214222493243
1435082001-3/163011/16173/4194.121390243180831716752931419
1640082001-3/163011/16173/4193.421588278206636219293385777
1845082001-3/163011/16173/4193.1117863132326407213037380108
2050082001-7/16373/4193/4193.11198734825804522382417114155
22550102501-7/16373/4193/4192.81218538328394972472433154209
24600102501-7/16373/4193/4192.51238341730975422559448205278
26650102501-5/8411253/4192.91229540229855232743480219297
28700102501-5/8411253/4192.51247243332145632928513286388
30750102501-5/8411253/4192.51264946434456033112545328445
32800102501-5/8411253/4192.21282749536746433657640416564
34850102501-5/8411253/4192.21300152542017364201736484656
36900102501-5/8411253/4191.91317855641347244746831633926
38950102501-5/8411253/4191.91335658843637644876854707959
401000102501-5/8411253/4191.913531618459380450078777811059
421050123001-7/8481253/4191.913339585433775951348998721182
441100123001-7/8481253/4191.913498613454379653569389521291
461150123001-7/8481253/4191.6136526404754832557797712601708
481200123001-7/8481253/4191.61381566849568685799101613691856
501250123001-7/8481253/4191.61397569651639046018105414762001
521300123001-7/8481253/4191.61413472453749416235109216032173
541350123001-7/8481253/4191.61429375255769766454113017312347
561400123001-7/8481253/4191.614452780578710136672116818482505
581450123001-7/8481253/4191.214611807599410506888120624823365
601500123001-7/8481253/4191.214770835620110867104124426533597
661650123001-7/8481253/4191.215247919682111947662134232164360
721800123001-7/8481253/4191.10.557241002744113038215143942615777
781950123001-7/8481253/4191.10.562011086806114128926156352667140
842100123001-7/8481253/41910.566781169868115209637168864818787
962400123001-7/8481253/4190.870.576321337992117371106219371008113668
1022550123001-7/8481253/4190.820.5810914201054218461177520621272517253
1082700123001-7/8481253/4190.770.5858615031116219551248921871639122223
1203000123001-7/8481253/4190.70.5954016701240321721391224362240330374
1323300123001-7/8481253/4190.640.51049418381364223891521626652516034112
1443600123001-7/8481253/4190.590.51144820051488226061651928933217643625

MOVEMENT CAPABILITY
1. Filled Arch reduces movement.
2. The degree of Angular Movement is based on the maximum extension shown.
3. If greater movements are desired, expansion joints can be supplied with two, three, or four
arches. Relatively longer “Face-to-Face” length dimensions are incorporated into designs of
Multiple Arch Type expansion joints.
4. To calculate the approximate movement of Multiple Arch expansion joints, take the movement
shown in the above table and multiply by the number of arches.
5. Movements shown above are based on proper installation practice.

B. SPRING RATE
1. Forces required to move expansion joints are based on zero pressure conditions and room
the temperature in the pipeline.
2. These forces should be considered only as approximates which may vary with the
elastomers and fabrics used in fabrication and the specific construction design of an
individual manufacturer.
3. See Chapter III, Section F for the definition of values shown.
4. To calculate the approximate Spring Rate for Multiple Arch Joints, divide the single arch
values by the number of arches.

C. FORCE POUNDS
1. Is the force required to move an expansion joint its rated movement.
*Items are normally furnished with “Filled Arch” construction.

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