This Mini Access Chamber (MAC) has a cross section of 300mm and has a height of 270mm. This can be extended up to 600mm with the use of a chamber riser, available in either 100mm or 200mm.

This MAC has 3 inlets exiting at 45° to the main flow. The outlets on this Mini Access Chamber are adjustable up to 10° in any direction, which aids in installation as the smallest angle offset will still allow the parts to fit together, saving much time, head scratching and extra bends.

We can also supply fixed outlet chamber, which are a cheaper alternative for straight forward installs.

Use this chart to determine which risers you need to finish at the correct height you require.

On top of this chamber you will need to pick a suitable frame and cover. These can be round or square and we have a cover frame suitable for block paving to be installed onto.

Any changes in direction of the main flow should be achieved outside of the chamber with the use of pipe bends. The self cleansing of the chamber cannot be guaranteed if you try to change the direction of main flow inside the chamber, due to the design.

After the pipe work and chamber have been fitted in place, the trench should be filled up to the crown of the pipework with pea shingle or similar, and the rest can be back filled with the dug out earth up to ground level.