The Super Pump attaches to a tap, You need a hose and connectors to connect it to the Perfect Union which screws on to the water mattress. Open the valve at the bottom of the super pump and the mattress drains. Close it an the mattress fills. Waveless Mattresses require a fairly stiff hose to connect the two. Keep in mind the connections need to be air-tight or it will just suck air. If you find the hose is sucking flat, Back off the water flow from the tap as required.

Fits Garden Taps 100%  Fits Internal Taps 50%