Waga MULTI/JOINT 3007 Plus Wide Range Restraint Coupling DN50-600

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The Waga MULTI/JOINT 3007 Plus wide-range restraint coupling delivers a robust, tensile-resistant joining solution engineered for high-integrity water and gas utility and transport piping systems. Featuring a universal wide-tolerance design accommodating up to 43 mm of outside diameter variation per nominal dimension, this ductile iron mechanical coupling connects diverse pipe materials ranging from DN50 to DN600. It provides high operational security across both underground and above-ground infrastructure, completely eliminating the need for thrust blocks and dedicated transition adaptors on mixed material networks.

Constructed from high-grade ductile cast iron EN-GJS-450-10 in accordance with EN 1563, the coupling body is coated with a minimum 250 µm fusion-bonded Resicoat RT 9000 R4 epoxy layer applied to SA 2.5 grit-blasted surfaces. This non-porous finish ensures comprehensive protection against aggressive soils, atmospheric weathering, and chemical exposure from pH 2 to pH 13. The mechanical restraint mechanism utilizes progressive Uni/Fiksers gripping teeth manufactured from AISI 316 stainless steel mounted within polyoxymethylene (POM) and polyamide wedge segments, generating secure axial holding force that increases proportionally with internal pipeline pressure.

Engineered for straightforward installation without specialized tooling, the MULTI/JOINT 3007 Plus accommodates an angular deflection of up to 8 degrees per socket end (16 degrees total across the coupling), effectively absorbing ground settlement, thermal movement, and misalignment. Fasteners feature Lubo anti-friction dry film coating to eliminate thread galling, while dual independent bolt circles on sizes up to DN200 allow each pipe side to be positioned and tightened separately. Fully compatible with PEHD, PVC-U, ductile iron, grey cast iron, steel, and GRP pipes at nominal pressures up to 16 bar for water and 10 bar for gas media.