Self-priming pump for easy handling. Small, lightweight and high performance. Quiet operation. Can be used for a wide range of applications, from household to farming, fishing, and for equipment such as water circulation (below 12°F (50°C)). Comes with an electric motor burnt prevention protector (manual return type). The special structure of the barbbles ensures a stable self-priming performance without worrying about water drainage. Special resin is used for the welding liquid.