Manhole Liner

Benched bottom manholes liner which has a sloped base to help residue exit the chamber. Available with a square or round body.

The inlets and outlets on these benched bottom manhole liners are designed to allow for connection of stainless steel, polypropylene and PVC–U pipework. Liners can accommodate one, two, three or multiple side inlets at varying inverts and one side outlet.

Inlet sizes vary from 75–300 mm diameter.

Where liners are internal in the building they are generally supplied with Double Sealed or Triple Sealed Recessed stainless steel manholes for concrete infill from B125 up to D400 load.

Where liners are external to the building, the covers above these liners are generally cast iron, but in some cases double sealed recessed or chequer plate stainless steel can be supplied.

Liner bodies are fully welded and dye pen tested. For deep liners optional step rungs can be added.

Features and benefits:

• Low maintenance.

• Reliable, controllable illumination.

• Energy efficient.

• Customized to suit particular project requirements.

• Easy to install.

Applications:

Suitable for food, dairy, fish and beverage plants.

Note: In most cases the top of the liner is 200–300 mm below FGL (load-bearing concrete above this supports the Kent or other manhole frame and cover at ground level. The manhole frame and the cover is most often smaller than the liner opening and can be a standard size).