Rain harvesting and only pump when you need to, Unrestricted full flow up to 1275 l/min at 12 Bar, prevent dry tank syndrome, maintains a minimum water level in rainwater tanks, delivers high volumes of water quickly with unrestrictive full flow (1275 l/min at 12 Bar), suitable for high/low pressures (0.2 Bar – 12 Bar), soft open and close action, preventing valve bounce and water hammer, strong, compact design, manufactured from strong, non-corrosive UV stabilised materials.