To my mind Numatic have always been a commercial company with a domestic line just like SEBO. In the UK at least very little beats the SEBO commercial uprights. Due to their reliability, performance and easy maintenance, no wonder both Numatic and SEBO hold greater footholds on the commercial market - the service personnel who use them swear by them.
Actually Benny I think Karcher cylinders are pretty rubbish all round. I have had two that just didn't last - the general plastics, lock fittings and filter rings don't stay on, some breakages are possible from shattering plastics and above all, though the motors are powerful, their commercial line up even when considered with a metal finish bin are questionable.
The only Karcher appliance I have that hasn't had anything break off it yet is my 2 year old Karcher window vac - but the longest has been a 7 year old pressure washer that has required several lance replacements whilst the main carry handle cracked after a week's use.
