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Product Description Universal Transition Coupler A Compression Universal Transition Coupling used to connect LDPE OR MDPE Pipe to Copper PVC, Galvanised Iron, Lead, Stainless Steel or Steel pipes. Quick and easy to use compression water pipe fitting for above and below ground installation. The Unidelta compression fittings in polypropylene ensure a perfect hydraulic seal in pressurised distribution systems. The joining system consists of linking the polyethylene pipe by a clamping ring that surrounds and grips the pipe after the blue nut has been tightened. Their technical features make Unidelta compression fittings extremely easy and rapid to install. The range offers diameters from 16mm to 110mm with 16 bar nominal pressure. Specifications Lock Nut: Blue Polypropylene Body: Black Polypropylene Split Ring: White Acetal Resin ‘O’ Ring : Nitrile Rubber Maximum Working Temperature 80C / 176F Maximum Working Pressure 16 Atm. / 240psi The compression fittings are WRAS approved for use on mains water systems. Available In: 25mm – 15/22 25mm – 20/27 25mm – 27/34 32mm- 20/27 32mm – 27/34