Universal Tied Expansion Joints
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Unaflex® Universal Tied Expansion Joints are capable of absorbing larger lateral movements than standard single bellows type expansion joints. Assemblies are designed in accordance with EJMA standards. Available with optional liners or covers.
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Standard bellows material: A/SA240 321ss
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Design Temperature: 500°F
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Design Pressure: Up to 150 psig
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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 change if other type of flanges are requested.
Optional liners and covers are available upon request.
Fixed 150# Plate Flanges
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| Nominal Size (in.) | Lateral Movement (in.) | O.A.L. (in.) | Lateral Spring Rate (lbs./in) | Added Movement per 1" of additional Length | Number of Rods | For Nipple Ends Add to Flange Unit O.A.L. |
| 2 | 1.5 3.8 5.4 |
16 |
22 18 10 |
0.188 | 2 | 4 |
| 2.5 | 1.4 3.3 4.6 |
14 22 28 40 52 64 |
28 20 10 |
0.157 | 2 | 4 |
| 3 | 1.3 3.1 4.5 |
16 22 28 40 52 64 |
32 12 10 |
0.152 | 2 | 4 |
| 4 | 1.0 2.6 3.7 |
16 22 28 40 52 64 |
44 17 11 |
0.151 | 2 | 4 |
| 5 | 2.0 3.0 4.0 |
16 22 28 40 52 64 |
50 22 12 |
0.182 | 2 | 4 |
| 6 | 1.5 3.5 4.0 |
16 22 28 40 52 64 |
100 60 15 |
0.152 | 2 | 6 |
| 8 | 1.5 3.5 4.0 |
16 22 28 40 52 64 |
120 80 30 |
0.138 | 2 | 6 |
| 10 | .6875 |
16 22 28 40 52 64 |
1572 518 249 94 48 30 |
0.128 | 2 | 6 |
| 12 | 1.1875 1.875 3.250 4.750 6.1875 7.750 |
22.5 |
805 386 147 76 47 31 |
0.110 | 2 | 8 |
| 14 | 1.1875 1.875 3.375 4.875 6.375 7.875 |
22.5 28.5 40.5 52.5 64.5 76.5 |
818 395 149 78 47 32 |
0.102 | 4 | 8 |
| 16 | .9375 1.4375 2.5625 3.75 4.9375 6.125 |
13 29 41 53 65 77 |
1435 689 262 136 83 56 |
0.100 | 4 | 8 |
| 18 | 1.375 2.0 3.3125 4.75 6.125 7.5625 |
24 30 42 54 66 78 |
1460 757 308 165 103 70 |
0.098 | 4 | 8 |
| 20 | 1.3125 1.875 3.125 4.4375 5.75 7.0625 |
24 30 42 54 66 78 |
1817 961 397 215 134 92 |
0.092 | 4 | 10 |
| 24 | .75 1.1875 2.125 3.0 3.9375 4.9375 |
25 31 43 55 67 79 |
4205 2056 795 417 256 173 |
0.079 | 4 | 10 |
| 30 | .8125 1.1875 1.9375 2.625 3.4375 4.1875 |
26 32 44 56 68 80 |
4818 2696 1187 663 423 293 |
0.073 | 4 | 10 |
All data is for reference. Specific requirements should be sent to the factory for engineering review. |
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