Nilfisk BA625 and the Nilfisk BA725 and the Nilfisk BA825 battery operated automatic floor scrubber drier dirty water dump hose complete with cap and bracket.
It has a softer straight part, to grip the hose, with the cap removed, and guide it to a floor drain, or bucket, and then control the flow of water by squeezing and releasing your grip.
At the moment standard postage is capped at a maximum of $25 within Australia so maximise the saving on postage and buy some of the related parts below!