Pump sizes available:Pump sizes for connecting to motor according to NEMA standards. Corrosion resistant materials: Manufactured from corrosion resistant materials for long life impellers, diffuser, and Delivery Casing is S.S.AISI-304. Independently Floating centrifugal impellers: The independently floating centrifugal impellers are present and they provide easy starting and long life, automatically adjusting to match pumping conditions for various application. High quality shaft bearings: It provides low friction and high wear resistance. Strong stainless steel drive shaft: It guarantees positive impeller drive and longer life. Standard 2 pole speed motor (2850rpm): It limits internal velocities for longer life. Certain impeller material selection guarantees optimal performance in sandy bores. Delivery Casing with built-in non return valve for stopping coming back water.