The Model 311 is a non-submersible and lightweight dewatering pump that is capable of performing at a high level. It is an economical and portable dewatering pump. It is capable of pumping more than 337 gallons per hour making it a go-to dewatering pump to keep on the garage shelf or in the truck. The small size is no indication of its capability as it is affectionately called “The Mighty Mover.”