Hargreaves Halifax HD10012 250mm Ductile Iron Drain Pipe Coupling
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Call for Availability250mm ductile iron coupling for jointing Halifax Drain pipes and fittings without a traditional spigot and socket joint.
- Diameter - 250mm nominal bore, for joining Halifax Drain pipes and fittings.
- Material - Two-piece ductile iron coupling to BS EN 1563 with an EPDM sealing gasket.
- Fixings - 4 locking screws with a recommended tightening torque of 15Nm.
- Electrical continuity - Integrated grub screw system, tested to 25 Amps in line with BS EN 877:1999+A1:2006.
The Halifax HD10012 ductile iron coupling belongs to the socketless, mechanically jointed Halifax system, joining 250mm Drain pipes and fittings without a traditional spigot and socket joint.
Construction
- Body - Two-piece coupling manufactured from ductile iron to BS EN 1563, finished in grey 2-part epoxy to match the below ground Halifax Drain range.
- Gasket - EPDM sealing gasket, tested aligned, at 3 degrees of deflection and under shear force in accordance with BS EN 877.
- Fixings - Secured with 4 zinc plated or stainless steel socket cap locking screws and nuts, using a 6mm Allen drive.
Electrical continuity
Below ground cast iron drainage can be required to maintain a continuous earthing path. The HD10012 includes a grub screw either side of the joint which is tightened through the coating to make metal to metal contact with the pipe. Independent testing at 25 Amps in accordance with BS EN 877:1999+A1:2006 Annex NA8 showed a resistance below 4% of the 0.3 ohm maximum the standard permits.
Tensile grading
Every Halifax Drain pipe and fitting, aside from a handful of brackets and couplings, is cast in grey iron graded by tensile strength in accordance with BS EN 877, giving a considerable margin over the 20 to 40 percent tensile strength typical of equivalent PVC or HDPE pipework.
Full jointing instructions are provided in the manufacturer's Halifax Technical Guide.