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Brett Martin Underground

Brett Martin Underground offers a comprehensive range of drainage systems. It includes the Drain, Sewer, Perforated, Surface Water and Cable Duct systems. The entire range incorporates pipes and fittings in eight diameters from 53.9mm to 400mm. The range has been designed to offer the installer maximum choice and flexibility. Every product has been designed with ease of installation in mind. All products are manufactured to exacting standards ensuring the highest possible levels of performance.

Shallow Access Chambers

The new base has been designed with a dropped main channel to eliminate possible blockages, has integral feet to ease installation, is totally airtight so can be installed internally and yet remains very cost effective.

  • Square lid for easy incorporation in paving and tarmac. Strong enough to withstand light vehicular traffic when set in a concrete surround. An airtight lid seal allows the unit to be used internally.
  • Two sectional risers give a maximum invert depth of 600mm.
  • Simple assembly with the new ring sealing system.
  • Base supplied with secure bungs that are easily removed for pipe insertion.
  • All joints feature secure rubber ring seals to give trouble-free watertight joints on site.

450mm Inspection Chamber Base (Code – 5696)

The injection moulded 450mm diameter Inspection Chamber Base provides an
integral facility for 110mm and 160mm pipework and is designed to reduce cross flow. Using a 160mm channel, the Chamber Base features two 160mm inlets at a 90° angle and a further two 110mm inlets to the front set at 45° and complements the existing 110mm channel version.

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