Yesterday we installed a Prochem SP 800 Carpet Cleaner to the Head Quarters and training centre for the FIRE AND RESCUE SERVICE in Morton in the Marsh.
These machine go both forwards and backwards, which is very rare, they have a roller brush, 70 psi water pressure pump and two 3 stage vac motors to give a lot of vacuum lift.
They are designed for large areas of carpets. They have been installed into Airports, hotels, football grounds, and many other locations.
Have a look at the link