Rubber expansion joints
Rubber expansion joints are flexible connectors for the construction of pipe systems. They relieve system strain by reducing vibration and noise and compensate static or dynamic movements caused by thermal change, load stress, pumping surges or construction settlement.
They also compensate assembling inaccuracies (misalignment during installation) and can be used as pipe insert pieces to facilitate inspections.
Our huge product range consists of more than 150 types of rubber expansion joints in 8 different rubber qualities and various rubber inserts . This choice of different types of rubber expansion joints allows a precise solution to be found for every application.
Typical Wide Arch Expansion Joint Movement/Spring Rate Capabilities
| Nominal Pipe Size Expansion Joint | Nominal Face-to-face | MOVEMENTS | SPRING RATES | ||||||||||||||||
| AXIAL COMPRESSION | AXIAL EXTENSION | LATERAL DEFLECTION | DEGREES OF ANGULAR MOVEMENT | DEGREES OF TORSIONAL MOVEMENT | AXIAL COMPRESSION | AXIAL EXTENSION | LATERAL DEFLECTION | ANGULAR MOVEMENT | |||||||||||
| in | mm | in | mm | in | mm | in | mm | in | mm | lbs/in | N/mm | lbs/in | N/mm | lbs/in | N/mm | ft-lbs/ deg | Nm/deg | ||
| 1* | 25 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 34.4 | 3 | 176 | 31 | 228 | 39 | 262 | 46 | 0.03 | 0.04 |
| 1-1/4* | 32 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 28.1 | 3 | 220 | 38 | 287 | 50 | 328 | 57 | 0.075 | 0.1 |
| 2001/1/2 | 40 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 23.1 | 3 | 265 | 46 | 344 | 60 | 393 | 69 | 0.11 | 0.15 |
| 2 | 50 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 18.1 | 3 | 317 | 55 | 414 | 72 | 525 | 92 | 0.22 | 0.3 |
| 2002/1/2 | 65 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 14.4 | 3 | 397 | 69 | 517 | 90 | 571 | 100 | 0.375 | 0.51 |
| 3 | 75 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 12.5 | 3 | 476 | 83 | 621 | 109 | 618 | 108 | 0.6 | 0.81 |
| 2003/1/2 | 88 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 10.4 | 3 | 556 | 97 | 724 | 127 | 666 | 117 | 0.975 | 1.32 |
| 4 | 100 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 9.4 | 3 | 636 | 111 | 828 | 145 | 714 | 125 | 1.425 | 1.93 |
| 5 | 125 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 7.5 | 3 | 793 | 139 | 1032 | 181 | 819 | 143 | 3 | 4 |
| 6 | 150 | 6 | 150 | 3/4 | 19 | 7/16 | 11 | 5/8 | 16 | 6.2 | 3 | 953 | 167 | 1239 | 217 | 925 | 162 | 5 | 7 |
| 8 | 200 | 6 | 150 | 1-3/16 | 30 | 11/16 | 17 | 5/8 | 16 | 6.9 | 3 | 1059 | 185 | 1378 | 241 | 1129 | 198 | 10 | 13 |
| 10 | 250 | 8 | 200 | 1-3/16 | 30 | 11/16 | 17 | 3/4 | 19 | 5.6 | 3 | 1324 | 232 | 1722 | 302 | 1213 | 212 | 18 | 24 |
| 12 | 300 | 8 | 200 | 1-3/16 | 30 | 11/16 | 17 | 3/4 | 19 | 4.7 | 3 | 1588 | 278 | 2066 | 362 | 1422 | 249 | 32 | 43 |
| 14 | 350 | 8 | 200 | 1-3/16 | 30 | 11/16 | 17 | 3/4 | 19 | 4.1 | 2 | 1390 | 243 | 1808 | 317 | 1675 | 293 | 14 | 19 |
| 16 | 400 | 8 | 200 | 1-3/16 | 30 | 11/16 | 17 | 3/4 | 19 | 3.4 | 2 | 1588 | 278 | 2066 | 362 | 1929 | 338 | 57 | 77 |
| 18 | 450 | 8 | 200 | 1-3/16 | 30 | 11/16 | 17 | 3/4 | 19 | 3.1 | 1 | 1786 | 313 | 2326 | 407 | 2130 | 373 | 80 | 108 |
| 20 | 500 | 8 | 200 | 1-7/16 | 37 | 3/4 | 19 | 3/4 | 19 | 3.1 | 1 | 1987 | 348 | 2580 | 452 | 2382 | 417 | 114 | 155 |
| 22 | 550 | 10 | 250 | 1-7/16 | 37 | 3/4 | 19 | 3/4 | 19 | 2.8 | 1 | 2185 | 383 | 2839 | 497 | 2472 | 433 | 154 | 209 |
| 24 | 600 | 10 | 250 | 1-7/16 | 37 | 3/4 | 19 | 3/4 | 19 | 2.5 | 1 | 2383 | 417 | 3097 | 542 | 2559 | 448 | 205 | 278 |
| 26 | 650 | 10 | 250 | 1-5/8 | 41 | 1 | 25 | 3/4 | 19 | 2.9 | 1 | 2295 | 402 | 2985 | 523 | 2743 | 480 | 219 | 297 |
| 28 | 700 | 10 | 250 | 1-5/8 | 41 | 1 | 25 | 3/4 | 19 | 2.5 | 1 | 2472 | 433 | 3214 | 563 | 2928 | 513 | 286 | 388 |
| 30 | 750 | 10 | 250 | 1-5/8 | 41 | 1 | 25 | 3/4 | 19 | 2.5 | 1 | 2649 | 464 | 3445 | 603 | 3112 | 545 | 328 | 445 |
| 32 | 800 | 10 | 250 | 1-5/8 | 41 | 1 | 25 | 3/4 | 19 | 2.2 | 1 | 2827 | 495 | 3674 | 643 | 3657 | 640 | 416 | 564 |
| 34 | 850 | 10 | 250 | 1-5/8 | 41 | 1 | 25 | 3/4 | 19 | 2.2 | 1 | 3001 | 525 | 4201 | 736 | 4201 | 736 | 484 | 656 |
| 36 | 900 | 10 | 250 | 1-5/8 | 41 | 1 | 25 | 3/4 | 19 | 1.9 | 1 | 3178 | 556 | 4134 | 724 | 4746 | 831 | 633 | 926 |
| 38 | 950 | 10 | 250 | 1-5/8 | 41 | 1 | 25 | 3/4 | 19 | 1.9 | 1 | 3356 | 588 | 4363 | 764 | 4876 | 854 | 707 | 959 |
| 40 | 1000 | 10 | 250 | 1-5/8 | 41 | 1 | 25 | 3/4 | 19 | 1.9 | 1 | 3531 | 618 | 4593 | 804 | 5007 | 877 | 781 | 1059 |
| 42 | 1050 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.9 | 1 | 3339 | 585 | 4337 | 759 | 5134 | 899 | 872 | 1182 |
| 44 | 1100 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.9 | 1 | 3498 | 613 | 4543 | 796 | 5356 | 938 | 952 | 1291 |
| 46 | 1150 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.6 | 1 | 3652 | 640 | 4754 | 832 | 5577 | 977 | 1260 | 1708 |
| 48 | 1200 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.6 | 1 | 3815 | 668 | 4956 | 868 | 5799 | 1016 | 1369 | 1856 |
| 50 | 1250 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.6 | 1 | 3975 | 696 | 5163 | 904 | 6018 | 1054 | 1476 | 2001 |
| 52 | 1300 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.6 | 1 | 4134 | 724 | 5374 | 941 | 6235 | 1092 | 1603 | 2173 |
| 54 | 1350 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.6 | 1 | 4293 | 752 | 5576 | 976 | 6454 | 1130 | 1731 | 2347 |
| 56 | 1400 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.6 | 1 | 4452 | 780 | 5787 | 1013 | 6672 | 1168 | 1848 | 2505 |
| 58 | 1450 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.2 | 1 | 4611 | 807 | 5994 | 1050 | 6888 | 1206 | 2482 | 3365 |
| 60 | 1500 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.2 | 1 | 4770 | 835 | 6201 | 1086 | 7104 | 1244 | 2653 | 3597 |
| 66 | 1650 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.2 | 1 | 5247 | 919 | 6821 | 1194 | 7662 | 1342 | 3216 | 4360 |
| 72 | 1800 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.1 | 0.5 | 5724 | 1002 | 7441 | 1303 | 8215 | 1439 | 4261 | 5777 |
| 78 | 1950 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1.1 | 0.5 | 6201 | 1086 | 8061 | 1412 | 8926 | 1563 | 5266 | 7140 |
| 84 | 2100 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 1 | 0.5 | 6678 | 1169 | 8681 | 1520 | 9637 | 1688 | 6481 | 8787 |
| 96 | 2400 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 0.87 | 0.5 | 7632 | 1337 | 9921 | 1737 | 11062 | 1937 | 10081 | 13668 |
| 102 | 2550 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 0.82 | 0.5 | 8109 | 1420 | 10542 | 1846 | 11775 | 2062 | 12725 | 17253 |
| 108 | 2700 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 0.77 | 0.5 | 8586 | 1503 | 11162 | 1955 | 12489 | 2187 | 16391 | 22223 |
| 120 | 3000 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 0.7 | 0.5 | 9540 | 1670 | 12403 | 2172 | 13912 | 2436 | 22403 | 30374 |
| 132 | 3300 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 0.64 | 0.5 | 10494 | 1838 | 13642 | 2389 | 15216 | 2665 | 25160 | 34112 |
| 144 | 3600 | 12 | 300 | 1-7/8 | 48 | 1 | 25 | 3/4 | 19 | 0.59 | 0.5 | 11448 | 2005 | 14882 | 2606 | 16519 | 2893 | 32176 | 43625 |
Rubber expansion joints
Rubber expansion joints are flexible connectors for the construction of pipe systems. They relieve system strain by reducing vibration and noise and compensate static or dynamic movements caused by thermal change, load stress, pumping surges or construction settlement.
They also compensate assembling inaccuracies (misalignment during installation) and can be used as pipe insert pieces to facilitate inspections.
Our huge product range consists of more than 150 types of rubber expansion joints in 8 different rubber qualities and various rubber inserts . This choice of different types of rubber expansion joints allows a precise solution to be found for every application.
Description
Rubber expansion joints are flexible “bellows” manufactured by vulcanization of rubber mixture together with reinforced textile, or steel yarns.
For increase of pressure resistance of rubber expansion joints is inserted in middle wall of bellows a reinforcement from textile or steel yarns.
Rubber expansion joints are with swivel – galvanized flanges, fixed flanges, or threaded fittings with BSPP threads.
Rubber expansion joints are manufactured in dimensions from DN20 to DN2400mm.
Thermal resistance of rubber expansion joints is from -25°C up to max. 130°C, depending on material of used rubber and inside reinforcement of expansion joint.
Pressure resistance of rubber expansion joints in standard version is PN6,10 and 16(nominal pressure is at temperature 20°C). Pressure resistance depends from type and dimension and max. working temperature of medium. At working pressure of medium higher than 50°C is necessary to correct pressure resistance of expansion joint. Size of correction depends from type of expansion joint and material of “bellows”.
Use of rubber expansion joints
Rubber expansion joints are used for elimination of thermal dilatation in pipelines. The largest range of applications they found in vibration damping applications, vibration and noise from pumps and other vibrating pipe aggregates.
Fabric expansion joints
Selecting the right fabric expansion joint for your system is important toward ensuring reliable operation. A properly designed and installed fabric expansion joint can ensure uninterrupted plant performance between scheduled maintenance shutdowns.
By combining different materials for the fabric expansion joints and taking into consideration the thermal, chemical and mechanical resistance as well as the fatigue properties of the material, our designers provide the optimum solutions both technically and economically.
We deliver all types and sizes of fabric expansion joints - for all industrial applications - including power generation, refineries, pharmaceutical industry, food industry, cement industry and many others.
Description
All used materials are 100% asbestos free. To increase thermal resistance are at manufacture of fabric expansion joints used fabrics based on glass, or ceramic yarns, or there is before expansion joint inserted thermal-insulating layer.
Construction of fabric expansion joints is designed always for particular application. Fabric expansion joints are manufactured in circular and also non-circular sections.
Fabric expansion joints are manufactured with ending for clamping buckle/back up bars, or with flange ending.
Dimensions and used materials of fabric expansion joints are designed according to specific site of application and specific working loads.
Fabric expansion joints are designed exclusively for the pipes with gaseous media, for the elimination of thermal dilation of the duct, fan vibration and so on. (air, flue gas, ...). They can be used for chemically aggressive acidic or alkaline gases.
Thermal resistance of fabric expansion joints is up to 1200 ° C. Pressure resistance of fabric expansion joints max. 0.1 MPa.
Fabric expansion joints can capture movements in all directions and due to their low stiffness they burden pipeline minimally. In case that the gas flow velocity reaches more than 10 ms-1, or contains abrasive particles, is necessary to protect expansion joint by inner protective tube.
The use of fabric expansion joints
Fabric expansion joints are used to insulate, to avoid mechanical loads and to protect against abrasion. They offer advantages for the pipe work designer as they can absorb movements simultaneously in several directions. ... Fabric expansion joints are installed in systems operating with low pressure and dry media.
