Little Giant LGRM Series convertible jet pumps are designed for pumping water from wells, river, lake or sprinkler systems. These units feature heavy duty cast iron case to provide optimal durability and mechanical shaft seal to ensure leakproof fit & continuous water lubrication for preventing damage to internal components. They are integrated with a screw-in-injector for creating a vacuum to draw water up the well and easily convert shallow well pumps (for less than 25 feet deep water sources) to deep well installation (above 25 feet deep). Choose from an array of these convertible jet pumps, available in 1/2, 3/4 and 1 HP motor ratings.