Tee manholes manufactured by Polieco are tee fittings for manholes, obtained by the rotational moulding procedure. They are made with medium density neutral polyethylene powder, with a percentage of colour masterbatch added to antioxidants for better thermal stability. The Polieco moulded tee fittings are black both inside and out.

The manholes contain three sockets for the inlet and outlet of the corrugated pipes and always include a corrugated pipe for the riser.

This solution consisting of Tee Manholes is usually adopted in Italy for road and motorway works for the construction of manholes to connect corrugated polyethylene pipes in non-pressurised underground sewers.

Moulded tee manholes have a socket at the upper part capable of accommodating an extension consisting of an ECOPAL corrugated pipe of the same diameter. Risers of 600 mm may be reduced for the manhole crawl space, and pipes with differing inlet and outlet diameters are available.

Ends of tee fittings with ND/OD 800 – 1000 – 1200 risers can be created using a PEMD tapered adapter, obtained by rotomoulding and coupled onto the extension, which is used to reduce manholes up to a crawl space diameter of 600 mm. A ladder, consisting of polyethylene uprights and polyethylene-coated steel steps, may also be welded onto the inside wall of ND/OD 1000 – 1200 risers.

To know all the detailed information and features of the Tee manholes by Polieco, download the technical data sheet, the specifications and the BIM drawings.