The Hansen Tank Leveller Valve is supplied as a complete kit with 115mm weighted ball, 140mm blue threaded float, 2.5m nylon cord and adaptors for 32mm, 40mm and 50mm inlet pipes. This device enables setting minimum and maximum water levels. This prevents the constant turn on and off of the pump whenever minimal amounts of water are drawn off. This system combines well with rain harvesting, allowing the pump to turn on only when a minimum water level is reached. Parts available.
