Hargreaves Halifax HD4095 100mm Cast Iron Grey Push Fit Drain Pipe Coupling
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Call for Availability100mm single-piece push fit coupling for joining Halifax Drain pipes and fittings with a push, rather than bolted, connection.
- Diameter - 100mm nominal bore, for joining Halifax Drain pipes and fittings.
- Material - Single-piece ductile iron casting to BS EN 1563 with two EPDM sealing gaskets.
- Fitting - Pushed home over a lubricated pipe spigot rather than bolted, for faster assembly.
- Electrical continuity - Uses the same grub screw continuity system as the Halifax ductile iron coupling.
The Halifax HD4095 sits within the Halifax Drain range as a 100mm single-piece push fit coupling, joining pipes and fittings with a push connection rather than the bolted assembly used by the standard ductile iron coupling.
Construction
- Body - Single-piece casting manufactured from ductile iron to BS EN 1563, finished in 2-part epoxy to match the Drain range.
- Gaskets - Two EPDM sealing gaskets, meeting the same hydrostatic test pressures as the Halifax ductile iron coupling.
Fitting
- Lubricant - Apply a small amount of Halifax push fit lubricant (HD0001) to the spigot of the pipe or fitting before pushing it home.
- Assembly - Apply firm, even pressure until the spigot abuts the coupling's central register, then support the joint while the lubricant cures.
Strength below ground
Buried pipework has to withstand more than its own weight: backfill loads and, in places, traffic loading above. Cast iron consistently exceeds the ring crush strength required by BS EN 877, giving it greater resistance to crushing than PVC or HDPE alternatives of the same diameter.
Full push fit installation steps are set out in the manufacturer's Halifax Technical Guide.