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The MULTI/JOINT® 3107 Plus: Wide Range Reduced Coupling (Restraint) provides a secure, restraint connection between pipes of various nominal diameters and materials. This reduced coupling is suitable for all kinds of pipe materials, including ductile iron, PE, PVC, steel, grey cast iron, and asbestos cement. It is suitable for water and gas applications, with NBR gaskets for gas and EPDM for potable water. The body and clamping ring(s) are made of ductile iron (GGG45 EN-GJS-450-10) and coated with RESICOAT epoxy powder for superior corrosion protection. Featuring stainless steel Uni/Fiksers, bolts, nuts, and washers, this coupling ensures a durable and reliable restraint connection. It allows for an angular deflection of up to 8° per socket during installation, providing flexibility for on-site conditions. Hygiene protection is included for DN50 - DN1025, ensuring the fitting remains clean from production to point of use. For restraint versions on plastic pipes, the use of an insert stiffener is mandatory. It has a minimum insertion depth (ID min) to ensure proper installation.
MULTI/JOINT® 3107 Plus Wide Range Reduced Couplings are available for various nominal diameters (DN) with specific range compatibility for the pipe ends. They are rated for PN 16 water and MOP 8 bar gas (with specific considerations for DN350 & DN400 on plastic pipes at PN 10 bar water / MOP 5 bar gas).
| Suitable for (DN) | Range 1 (mm) | Range 3 (mm) | Weight (kg) (EPDM/A2 Code) | PN Water (bar) | MOP Gas (bar) | No. of Bolt Holes (Side 1 / Side 3) |
|---|---|---|---|---|---|---|
| 50-65 | 46-71 | 63-90 | 5.900 | 16 | 8 | 3xM12 / 3xM12 |
| 65-80 | 63-90 | 84-105 | 6.700 | 16 | 8 | 3xM12 / 3xM12 |
| 80-100 | 84-105 | 104-132 | 8.100 | 16 | 8 | 3xM12 / 3xM16 |
| 100-125 | 104-132 | 132-155 | 10.600 | 16 | 8 | 3xM16 / 4xM16 |
| 100-150 | 104-132 | 154-192 | 14.300 | 16 | 8 | 3xM16 / 4xM16 |
| 125-150 | 132-155 | 154-192 | 15.500 | 16 | 8 | 4xM16 / 4xM16 |
| 150-200 | 154-192 | 192-232 | 22.100 | 16 | 8 | 4xM16 / 6xM16 |
| 200-225 | 192-232 | 230-268 | 34.400 | 16 | 8 | 6xM16 / 6xM20 |
| 200-250 | 192-232 | 267-310 | 37.100 | 16 | 8 | 6xM16 / 6xM20 |
| 225-250 | 230-268 | 267-310 | 41.700 | 16 | 8 | 6xM20 / 6xM20 |
| 250-300 | 267-310 | 315-356 | 50.500 | 16 | 8 | 6xM20 / 8xM20 |
| 300-350 | 315-356 | 352-393 | 62.100 | 16 | 8 | 8xM20 / 8xM20 |
| 300-400 | 315-356 | 392-433 | 69.200 | 16 | 8 | 8xM20 / 10xM20 |
| 350-400 | 352-393 | 392-433 | 71.600 | 16 | 8 | 8xM20 / 10xM20 |
| 400-425 | 392-433 | 432-464 | 85.700 | 10 | 5 | 10xM20 / 10xM20 |
| 400-450 | 392-433 | 450-482 | 86.800 | 10 | 5 | 10xM20 / 10xM20 |
| 425-475 | 432-464 | 481-513 | 101.000 | 10 | 5 | 10xM20 / 10xM20 |
| 450-500 | 450-482 | 500-532 | 106.000 | 10 | 5 | 10xM20 / 10xM20 |
| 500-550 | 500-532 | 548-580 | 114.700 | 10 | 5 | 10xM20 / 12xM20 |
| 550-600 | 548-580 | 605-637 | 131.200 | 10 | 5 | 10xM20 / 12xM20 |
| 600-625 | 605-637 | 630-662 | 196.300 | 10 | 5 | 10xM20 / 12xM20 |
| 600-675 | 605-637 | 665-697 | 195.600 | 10 | 5 | 10xM20 / 12xM20 |
| 600-700 | 605-637 | 709-741 | 218.000 | 10 | 5 | 10xM20 / 12xM20 |
| 700-750 | 709-741 | 745-777 | 268.000 | 10 | 5 | 10xM20 / 14xM20 |
| 750-800 | 745-777 | 799-831 | 322.000 | 10 | 5 | 10xM20 / 14xM20 |
| 800-825 | 799-831 | 837-869 | 288.000 | 10 | 5 | 10xM20 / 14xM20 |
| 900-925 | 899-931 | 939-971 | 331.000 | 10 | 5 | 10xM20 / 14xM20 |
| 1000-1025 | 994-1026 | 1042-1074 | 365.000 | 10 | 5 | 10xM20 / 14xM20 |
