Commonly known as a Stream pump this SP25 unit can pump high volumes of water if height is kept low or to a minimum.
Excellent for high volume water courses. As you can see by the pump curve below the higher the pumping height the less volume can be pumped.
Limited maximum height of 2.1 metres.
This pump also has added Dry protection cut-off. If the water levels drop too low the pump will stop automatically to alleviate burn-out.
Photo of the SP20 pump height and flow rate against a 30cm ruler