No Matt, they work off a venturi, sucking water up via a nozzle in the skatter and sending it down the discharge hoe to wherever you want.... Ie next doors drain
Bit like the new Karcher I have just bought for rooftop stuff we do
Whats that then Roger? is that to minimise run off going off the roof/down the gutters? what machine is it mate?
No I don't do roofs and gutters Kenny, only roof-top patios, terraces, decking and balconies also good for when working around ponds as well, they have a new flat surface model that has a suction hose with a venturi nozzle so you can aim the dis-charge down drains, flower-beds etc.