and the  and the carpet cleaning machine grey recovery tank vacuum hose assembly. It's connected to the spout on the vacuum motor fan casing and the provides the vacuum to the recovery tank, for it to recover the dirty solution water. It's Obsolete and No Longer Available

The hose in the photo is similar, but it doesn't have the elbow on the end.

At the moment, as postage is capped at a maximum of $25, maximise the saving on postage and buy some of the related parts below, such as some hose and other carpet or upholstery cleaning accessory or a Nilfisk vacuum cleaner replacement  filters and dustbags, or a new floor tool!