The valve wheel is a quest item found during the Tower of Life quest. It is found in a crate inside the tower on the south-east side. The player must use 4 coloured balls, 3 metal sheets and 4 valve wheels to repair the broken pressure machine on the 1st floor[UK]2nd floor[US] of the tower. Additional wheels can be obtained before the machine is fixed, and fixing the machine will only remove 4 wheels.