OVERVIEW
The Flexicraft Braided ML U-Loop is a pre-engineered flexible piping loop expansion joint, designed to eliminate severe anchor stresses in process, HVAC, and many other piping systems. Traditional inline expansion joints subject system anchors to massive pressure thrust forces and high spring forces demanding costly structural steel reinforcement.
Because the internal fluid forces are contained symmetrically by the continuous high-tensile braid corset, the ML U-Loop entirely eliminates pressure thrust loads. Piping anchors are only required to overcome the exceptionally low natural lateral spring rates of the pipe loop.
Looking for alternatives? Flexicraft also manufactures compact Braided V-Loops for tight envelopes, and engineered-to-order Universal Tied Bellows Loops built to EJMA standards for heavy infrastructure lines 16" and larger.
FEATURES
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Zero Anchor Thrust: Restrains hydraulic pressure forces within the braid, relieving structural anchors of immense pressure loads.
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Exceptionally Low Spring Rates: Minimizes the force to flex the vertical legs.
-
Connection Versatility: Available with any pipe fittings.
APPLICATIONS
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Where elimiationg of the massive anchor loads and rigid guiding are important.
-
Where minimizing the spatial footprint and heavy support structures required by hard pipe loops.
-
Ideal where large pipeline movements must be accommodated alongside exceptionally low spring rates.
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Perfect for high-density, low-stress Data Center mission critical cooling system piping.
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Steam and condensate, and other piping systems, with a double-braided corset to prevent condensate pooling.
Temperature Correction: Working pressures must be derated at elevated system temperatures using the standard correction factors in the submittals.

|
DIA
(in)
|
ENDS |
MVMNT
(in)
|
WT
(lbs)
|
SPRING_RATE
(lbs/in)
|
PRES 1 BRD
(psi)
|
PRES 2 BRD
(psi)
|
PRES STEAM
(psi)
|
A
(in)
|
B
(in)
|
PRODUCT NO |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | WELD | 1 1/2 | 2 1/2 | 30 | 1075 | 1720 | 300 | 6 | 13 | LOOPW30050 |
| 1/2 | WELD | 4 | 5 | 11 | 1075 | 1720 | 300 | 9 | 17 | LOOPW80050 |
| 3/4 | WELD | 1 1/2 | 2 1/2 | 31 | 792 | 1287 | 300 | 5 1/4 | 13 | LOOPW30075 |
| 3/4 | WELD | 4 | 5 | 12 | 792 | 1287 | 300 | 9 1/4 | 18 | LOOPW80075 |
| 1 | WELD | 1 1/2 | 4 | 35 | 571 | 914 | 300 | 6 | 15 | LOOPW30100 |
| 1 | WELD | 4 | 7 | 13 | 571 | 914 | 300 | 10 | 20 | LOOPW80100 |
| 1 1/4 | WELD | 1 1/2 | 6 | 44 | 531 | 850 | 300 | 7 1/2 | 16 | LOOPW30125 |
| 1 1/4 | WELD | 4 | 9 | 17 | 531 | 850 | 300 | 10 3/4 | 21 | LOOPW80125 |
| 1 1/2 | WELD | 1 1/2 | 9 | 47 | 472 | 755 | 300 | 9 | 17 | LOOPW30150 |
| 1 1/2 | WELD | 4 | 13 | 18 | 472 | 755 | 300 | 11 1/2 | 23 | LOOPW80150 |
| 2 | WELD | 1 1/2 | 16 | 52 | 500 | 750 | 300 | 12 | 19 | LOOPW30200 |
| 2 | WELD | 4 | 13 | 20 | 500 | 750 | 300 | 14 | 25 | LOOPW80200 |
| 2 1/2 | WELD | 1 1/2 | 20 | 55 | 387 | 619 | 300 | 15 | 21 | LOOPW30250 |
| 2 1/2 | WELD | 4 | 26 | 21 | 387 | 619 | 300 | 15 1/2 | 28 | LOOPW80250 |
| 3 | WELD | 1 1/2 | 35 | 60 | 288 | 431 | 216 | 18 | 23 | LOOPW30300 |
| 3 | WELD | 4 | 39 | 23 | 288 | 431 | 216 | 18 | 30 | LOOPW80300 |
| 4 | WELD | 1 1/2 | 50 | 80 | 232 | 371 | 186 | 24 | 28 | LOOPW30400 |
| 4 | WELD | 4 | 54 | 30 | 232 | 371 | 186 | 24 | 35 | LOOPW80400 |
| 5 | WELD | 1 1/2 | 81 | 124 | 191 | 306 | 153 | 30 | 32 | LOOPW30500 |
| 5 | WELD | 4 | 91 | 47 | 191 | 306 | 153 | 30 | 40 | LOOPW80500 |
| 6 | WELD | 1 1/2 | 125 | 135 | 165 | 264 | 132 | 36 | 37 | LOOPW30600 |
| 6 | WELD | 4 | 140 | 51 | 165 | 264 | 132 | 36 | 46 | LOOPW80600 |
| 8 | WELD | 1 1/2 | 245 | 173 | 215 | 275 | 115 | 48 | 48 | LOOPW30800 |
| 8 | WELD | 4 | 267 | 65 | 215 | 275 | 115 | 48 | 58 | LOOPW80800 |
| 10 | WELD | 1 1/2 | 1 1/2 | 403 | 175 | 270 | 100 | 60 | 60 | LOOPW31000 |
| 10 | WELD | 4 | 434 | 96 | 200 | 175 | 100 | 60 | 67 | LOOPW81000 |
| 12 | WELD | 1 1/2 | 556 | 260 | 160 | 220 | 94 | 72 | 63 | LOOPW31200 |
| 12 | WELD | 4 | 586 | 98 | 160 | 220 | 94 | 72 | 74 | LOOPW81200 |
| 2 | FLANGED | 1-1/2 | 21 | 52 | 500 | 750 | 300 | 12 1/2 | 19 | LOOPF30200 |
| 2 | FLANGED | 4 | 24 | 20 | 500 | 750 | 300 | 14 1/2 | 25 | LOOPF80200 |
| 2 1/2 | FLANGED | 1-1/2 | 30 | 55 | 387 | 619 | 300 | 15 1/2 | 21 | LOOPF30250 |
| 2 1/2 | FLANGED | 4 | 36 | 21 | 387 | 619 | 300 | 16 | 28 | LOOPF80250 |
| 3 | FLANGED | 1 1/2 | 46 | 60 | 288 | 431 | 216 | 18 1/2 | 23 | LOOPF30300 |
| 3 | FLANGED | 4 | 50 | 23 | 288 | 431 | 216 | 18 1/2 | 30 | LOOPF80300 |
| 4 | FLANGED | 1-1/2 | 63 | 80 | 232 | 371 | 186 | 24 1/2 | 28 | LOOPF30400 |
| 4 | FLANGED | 4 | 69 | 30 | 232 | 371 | 186 | 24 1/2 | 35 | LOOPF80400 |
| 5 | FLANGED | 1-1/2 | 91 | 124 | 191 | 306 | 153 | 30 1/2 | 32 | LOOPF30500 |
| 5 | FLANGED | 4 | 101 | 47 | 191 | 306 | 153 | 30 1/2 | 40 | LOOPF80500 |
| 6 | FLANGED | 1-1/2 | 148 | 135 | 165 | 254 | 132 | 36 1/2 | 37 | LOOPF30600 |
| 6 | FLANGED | 4 | 163 | 51 | 165 | 254 | 132 | 36 1/2 | 46 | LOOPF80600 |
| 8 | FLANGED | 1-1/2 | 287 | 173 | 215 | 275 | 115 | 48 1/2 | 48 | LOOPF30800 |
| 8 | FLANGED | 4 | 309 | 65 | 215 | 275 | 115 | 48 1/2 | 58 | LOOPF80800 |
| 10 | FLANGED | 1-1/2 | 453 | 255 | 175 | 270 | 100 | 60 1/2 | 55 | LOOPF31000 |
| 10 | FLANGED | 4 | 484 | 96 | 175 | 270 | 100 | 60 1/2 | 67 | LOOPF81000 |
| 12 | FLANGED | 1-1/2 | 636 | 260 | 160 | 220 | 94 | 72 1/2 | 63 | LOOPF31200 |
| 12 | FLANGED | 4 | 666 | 98 | 160 | 220 | 94 | 72 1/2 | 74 | LOOPF81200 |
| 14 | FLANGED | 1-1/2 | - | - | 110 | 125 | 63 | LOOPF31400 | ||
| 14 | FLANGED | 4 | - | - | 110 | 125 | 63 | LOOPF81400 | ||
| 16 | FLANGED | 1-1/2 | - | - | 110 | 170 | 85 | LOOPF31600 | ||
| 16 | FLANGED | 4 | - | - | 110 | 170 | 85 | LOOPF81600 | ||
| 18 | FLANGED | 1-1/2 | - | - | 85 | 150 | 75 | LOOPF31800 | ||
| 18 | FLANGED | 4 | - | - | 85 | 150 | 75 | LOOPF81800 | ||
| 1/2 | THREAD | 1-1/2 | 3 | 30 | 1075 | 1720 | 300 | 10 | 13 | LOOPT30050 |
| 1/2 | THREAD | 4 | 5 1/2 | 11 | 1075 | 1720 | 300 | 13 | 17 | LOOPT80050 |
| 3/4 | THREAD | 1-1/2 | 3 | 31 | 792 | 1267 | 300 | 9 1/4 | 13 | LOOPT30075 |
| 3/4 | THREAD | 4 | 5 1/2 | 12 | 792 | 1267 | 300 | 13 1/4 | 18 | LOOPT80075 |
| 1 | THREAD | 1 1/2 | 5 | 35 | 571 | 914 | 300 | 11 | 15 | LOOPT30100 |
| 1 | THREAD | 4 | 8 | 13 | 571 | 914 | 300 | 15 | 20 | LOOPT80100 |
| 1 1/4 | THREAD | 1-1/2 | 7 | 44 | 531 | 850 | 300 | 12 1/2 | 16 | LOOPT30125 |
| 1 1/4 | THREAD | 4 | 10 | 17 | 531 | 850 | 300 | 15 3/4 | 21 | LOOPT80125 |
| 1 1/2 | THREAD | 1-1/2 | 10 1/2 | 47 | 472 | 755 | 300 | 15 | 17 | LOOPT30150 |
| 1 1/2 | THREAD | 4 | 14 1/2 | 18 | 472 | 755 | 300 | 17 1/2 | 23 | LOOPT80150 |
| 2 | THREAD | 1-1/2 | 15 | 52 | 500 | 750 | 300 | 18 | 19 | LOOPT30200 |
| 2 | THREAD | 4 | 18 | 20 | 500 | 750 | 300 | 20 | 25 | LOOPT80200 |
| 2 1/2 | THREAD | 1-1/2 | 23 | 55 | 387 | 619 | 300 | 21 | 21 | LOOPT30250 |
| 2 1/2 | THREAD | 4 | 29 | 21 | 387 | 619 | 300 | 21 1/2 | 28 | LOOPT80250 |
| 3 | THREAD | 1-1/2 | 39 | 60 | 288 | 431 | 216 | 24 | 23 | LOOPT30300 |
| 3 | THREAD | 4 | 43 | 23 | 288 | 431 | 216 | 24 | 30 | LOOPT80300 |