Hargreaves Halifax HD4482 100mm x 100mm Cast Iron Grey Rectangular 4 Branch Inspection Chamber
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Call for Availability100x100mm precast chamber unit with a rectangular door, avoiding a brick-built manhole at a four way junction below ground.
- Configuration - Rectangular door chamber sized for a four way junction.
- Footprint - 100x100mm branch sizing, matching the Halifax Drain range at this diameter.
- Body - Cast in grey iron to the BS EN 877 standard, with a minimum average 150 micron 2-pack epoxy finish.
- Servicing - The bolted rectangular 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 HD4482 packages a four way junction and a rectangular access door into one 100x100mm 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 rectangular door version is sized for a four way configuration.
Build
- Casting - Cast in grey iron to the BS EN 877 standard, with a minimum average 150 micron 2-pack epoxy finish.
- Access door - Bolted rectangular door over the junction, opened for rodding and inspection.
Cutting on site
Where a length needs to be shortened on site, Hargreaves recommend a powered chop saw or disc cutter fitted with a metal cutting disc rather than a hand hacksaw; burrs should be removed and any exposed metal touched up with a high quality metal primer before the joint is made.
Full dimensions are set out in the manufacturer's Halifax Technical Guide.