This appraisal considers Daemco Xcel ductile iron DN 63 to DN 315 couplings and flange adapters with restrained flexible mechanical joints for PE pipe, manufactured to comply with EN 12842:2012 Ductile iron fittings for PVC-U or PE piping systems-Requirements and test methods. This Issue 2 incorporates additional flange adapters with DN 225, DN 250 and DN 300 flanges that comply with AS/NZS 4087.
The joint consists of an EPDM elastomeric seal and gunmetal gripper ring, which is secured by a bolted gland. The maximum allowable joint deflection is 1.5 degrees.
The ductile iron components are coated with Jotaguard VA5001 Fusion Bonded Epoxy and the fasteners are Grade 316 stainless steel.
The couplings and flange adapters are rated as PN16. No pipe stiffener insert is required for PN12.5 or higher rated pipes.
The Daemco Xcel Restrained Joint Couplings and Flange Adapters for PE pipe included in this appraisal meet the requirements of WSA PS – 245 Ductile iron fittings with restrained flexible joints for polyethylene pipe and are therefore considered as ‘fit-for-purpose’.