Hargreaves Halifax HD6680 150mm x 150mm Cast Iron Grey Round Inspection Chamber
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Call for Availability150x150mm precast chamber unit with a round door, avoiding a brick-built manhole at a twin branch junction below ground.
- Configuration - Round door chamber sized for a twin branch junction.
- Footprint - 150x150mm branch sizing, matching the Halifax Drain range at this diameter.
- Body - Grey iron, cast and tested to BS EN 877, carrying a 2-pack epoxy coating of at least 150 microns on average.
- Servicing - The bolted round door opens for rodding and inspection at the junction.
Installing a full brick or concrete manhole is not always proportionate for a smaller buried junction. The Halifax HD6680 packages a twin branch junction and a round access door into one 150x150mm precast unit that drops straight into the run.
Why a chamber unit
Maintenance access at a junction follows the same general principle as elsewhere in BS EN 12056-2: somewhere to rod and inspect the pipework without digging it up. A precast chamber gets there without the labour of building a manhole from scratch, and this round door version is sized for a twin branch configuration.
Build
- Casting - Grey iron, cast and tested to BS EN 877, carrying a 2-pack epoxy coating of at least 150 microns on average.
- Access door - Bolted round door over the junction, opened for rodding and inspection.
Trench preparation
Halifax Drain pipework should be laid into an accurately trimmed trench with a flat, continuously supported base and 50mm clearance beneath each coupling joint; where accurate trimming is not possible, an additional 100mm of excavation allows a granular bed to be laid while keeping that same clearance.
Full dimensions are set out in the manufacturer's Halifax Technical Guide.