Restrained fittings
Wide-range self-restrained universal coupling
The definitive universal, self-restrained coupling. Connects and locks pipes of different materials and diameters in a single step. Made of ductile iron, it eliminates the need for anchoring and solves the most demanding repairs and transitions.
- 12references
- 63 – 200 mmsize range
- 11in stock
The GA01-5 coupling represents the ultimate evolution in mechanical couplings, merging two technologies into a single high-performance solution. On the one hand, it works as a universal coupling, able to adapt to a wide range of outside diameters, allowing pipes of materials as diverse as cast iron, steel, PVC or asbestos cement to be connected. On the other, it incorporates a powerful self-restrained locking system that anchors to the pipes, providing complete mechanical restraint that prevents disconnection.
This dual functionality makes it the most powerful tool for a maintenance crew or site manager. It not only allows a fast, watertight repair or transition, but also secures the joint mechanically without having to build costly thrust blocks.
It is the perfect solution for emergencies, for connecting new networks to old ones of uncertain diameter, or for areas with vibration or ground movement where maximum safety is required. Its GGG-50 ductile iron construction and high-quality bolts guarantee long-term reliability and durability.
- Body and rings
- High-strength GGG-50 ductile iron.
- Locking system
- Toothed rings of high-strength steel or brass for secure mechanical anchoring.
- Sealing gasket
- Wide-range EPDM rubber, ensuring watertightness across multiple diameters and materials.
- Bolts
- High-strength steel with advanced anti-corrosion treatment.
- Nominal pressure (PN)
- 16 bar.
- Dual functionality
- Wide range
- Accommodates significant variations in pipe outside diameter.
- Self-restrained
- Provides complete axial restraint, eliminating the need for external anchoring.
- Universal compatibility
- Suitable for PVC, PE, ductile iron, steel, asbestos cement and other rigid materials.
- DN 50 (covers OD 57 to 74 mm) - Weight 4.98 kg
- DN 65 (covers OD 68 to 85 mm) - Weight 5.73 kg
- DN 80 (covers OD 84 to 106 mm) - Weight 7.38 kg
- DN 100 (covers OD 109 to 133 mm) - Weight 9.75 kg
- DN 125 (covers OD 132 to 157 mm) - Weight 11.49 kg
- DN 150 (covers OD 157 to 183 mm) - Weight 13.69 kg
- DN 200 (covers OD 218 to 242 mm) - Weight 18.15 kg
- DN 250 (covers OD 248 to 274 mm) - Weight 26.00 kg
- DN 300 (covers OD 298 to 324 mm) - Weight 33.50 kg
Full dimensions and weights in the Technical data sheet (PDF).
- Critical emergency repairsThe safest, most versatile solution when the condition or exact diameter of the damaged pipe is unknown.
- Secure material transitionsFor joining a new PE pipe to an old asbestos cement network, guaranteeing both sealing and restraint.
- High-risk areasIdeal for bridges, unstable ground, pump outlets and areas with high vibration.
- Network renewal projectsGreatly simplifies the connection of new sections to existing infrastructure.
- Inventory optimisationA single fitting solves multiple scenarios, reducing the need to stock a wide variety of couplings and anchors.
References
Self-restrained universal transition coupling
DN
| Reference | Product | Size | Availability | Actions |
|---|---|---|---|---|
| UT057074063 | Self-locking transition coupling DN 63 · Ø57–74 | DN 63 | In stock | |
| UT068085075 | Self-locking transition coupling DN 75 · Ø68–85 | DN 75 | In stock | |
| UT084106090 | Self-locking transition coupling DN 90 · Ø84–106 | DN 90 | Last units | |
| UT099119090 | Self-locking transition coupling DN 90 · Ø99–119 | DN 90 | In stock | |
| UT109133110 | Self-locking transition coupling DN 110 · Ø109–133 | DN 110 | In stock | |
| UT099119110 | Self-locking transition coupling DN 110 · Ø99–119 | DN 110 | In stock | |
| UT109133125 | Self-locking transition coupling DN 125 · Ø109–133 | DN 125 | Last units | |
| UT132157125 | Self-locking transition coupling DN 125 · Ø132–157 | DN 125 | In stock | |
| UT132157140 | Self-locking transition coupling DN 140 · Ø132–157 | DN 140 | In stock | |
| UT157183160 | Self-locking transition coupling DN 160 · Ø157–183 | DN 160 | Last units | |
| UT193215200 | Self-locking transition coupling DN 200 · Ø193–215 | DN 200 | In stock | |
| UT218242200 | Self-locking transition coupling DN 200 · Ø218–242 | DN 200 | Made to order |
No references match the filters.
From the blog: guides on this family
More news
28 April 2026How to connect an asbestos cement pipe to PVC or HDPE without replacing the whole networkThousands of kilometres of asbestos cement pipe are still in service. When you have to join it to new pipe, the right part depends on the outside diameters and on whether there is a risk of pull-out: Gibault joint, wide-range coupling or self-anchoring transition coupling.
19 August 2026How to repair a leak in a buried PVC pipe without stopping irrigationAnti-pull repair collar or stainless steel repair clamp: which to use depending on the type of break, how it is fitted in the trench and why the repair withstands the pressure of the irrigation season.
10 March 2026Universal, wide-range or anti-pull flange adaptor: which to choose to connect pipe to a valveAll three go from plain pipe to flange, but they solve different problems: diameter tolerance, transition between materials or axial restraint. A short guide so you do not order the wrong part.
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