Vortex impeller Tsurumi PN pump from Japan
Designed for heavy duty, continuous running. Stainless steel and resin suitable for fresh and saltwater. Rated as a wastewater pump (10 mm passage through impeller). Cable with anti-wicking block, circle thermal protector, oil lifter. Water temperatures up to 40 degress Celsius. 2″ (50 mm) discharge runs on 0.25 kW gives 200 lpm at 6 m total head. Spare parts are available but you will probably never need them, such is the quality of Tsurumi.