SEI Pumps offers submersible pumps in all stainless steel or cast iron. 4-inch submersible pumps with Noryl impellers. 3-inch pumps VFD compatible. Vertical line shaft turbines. Submersible motors 3,600 rpm. Submersible motors 1,800 rpm. Shallow well, deep well vertical, irrigator and convertible jets. VFD drives. www.seipumps.com