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Non-restrained pipe coupling for all pipe materials, DN350–DN600. Long face-to-face length and lifting eye simplify installation in large sizes.

Hymax Long is a non-restrained pipe coupling for large sizes that joins pipes of different materials and outside diameters in the same joint. The long face-to-face length bridges greater distances, and the lifting eye makes handling easier in the trench. The coupling allows angular deflection of up to ±4 degrees per side. Before installation, clean the pipe contact surfaces and check the outside diameter with the supplied diameter tape to ensure the pipe is within the working range. The minimum insertion depth is 55 mm for DN40–DN300 and 100 mm from DN350 upwards. In larger sizes a split gasket is available, where the outer removable layer can be taken off for a larger working range. Tighten the bolts alternately from the top and finish by hand with a torque wrench to the specified torque. Min. insertion depth (G MIN): DN40-300mm: 55mm DN350-1200mm: 100mm DN1200-1500mm: 150m
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| Component | Material | Standard |
|---|---|---|
| Body/Gland | P235JR steel | EN 10025-1 (DIN 17100) |
| Gasket | EPDM W270, self-cleaning | - |
| Nuts and bolts | Acid-resistant stainless steel A4, Maxi-Lube treated | - |
| Corrosion protection (epoxy coating) | Resicoat® epoxy | DIN 30677-2 (GSK) |
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7 variants
| RSK no. | Description | DN | Spännviddtotal,mm | Spännvidd medinre tätning | Span withoutinternal seal | Dmm | Hmm | imm | Lmm | Bolt quantityx dim | Hylsamm | Min.Nm | Quote |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1142130 | Hymax Long, DN350 SPV:378-434mm | 350 | 378-434 | 378-408 | 406-434 | 534 | 600 | 370 | 460 | 4 x M16 | 24 | 200 | |
| 1142131 | Hymax Long, DN400 SPV:434-488mm | 400 | 434-488 | 434-462 | 460-488 | 588 | 655 | 370 | 460 | 4 x M16 | 24 | 200 | |
| 1142132 | Hymax Long, DN450 SPV:488-542mm | 450 | 488-542 | 488-516 | 514-542 | 642 | 705 | 370 | 460 | 4 x M16 | 24 | 200 | |
| 1142133 | Hymax Long, DN500 SPV:546-600mm | 500 | 546-600 | 546-574 | 572-600 | 694 | 760 | 370 | 460 | 4 x M16 | 24 | 200 | |
| 1142410 | Hymax Long, DN500 SPV:520-574mm | 500 | 520-574 | 520-548 | 546-574 | 694 | 760 | 370 | 460 | 4 x M16 | 24 | 200 | |
| 1142134 | Hymax Long, DN600 SPV:624-678mm | 600 | 624-678 | 624-652 | 650-678 | 778 | 845 | 370 | 460 | 4 x M16 | 24 | 200 | |
| 1142437 | Hymax Long, DN600 SPV:606-660mm | 600 | 606-660 | 606-634 | 632-660 | 760 | 825 | 370 | 460 | 4 x M16 | 24 | 200 |
DN 350-600 has a split gasket