They can be used to clear anything from oil, sludge and muck to general cleaning tasks without the need for filter changes. Featuring a 20,000cm filtration area, the Brigadier DS-3450 is fitted with three heavy-duty 1150W motors which are independently switchable for maximum efficiency. Small but significant details include extra cable gland protection, heavy-duty motor housing clips and smooth rolling castors.

When the collection tank is full, emptying is quick, safe and easy. Simply raise the handle to lower the container and roll it off to a skip or waste bin. Accessories include 10m of high-grade suction hose, floor cleaning tools, a 1m handgrip nozzle and two choices of crevice tool supplied in the box, 

If you’re looking for a more compact unit for wet use, the Brigadier WD-3450 has a smaller body but a deceptively large 90L tank. Both machines are available from APM Supplies.