Thompson Pump’s JSC Enviroprime® pumps are automatic priming centrifugal pumps that can handle solids up to 4" and are ideal for sewer by-pass pumping, water supply for hydraulic fracking operations, industrial plant turn-arounds, mining, flood control and any other application that requires the transfer of liquids that contain solids. The durable construction and the highly efficient pumps provide economical operation and longer life resulting in lower fuel cost.