Inline Non Return Valve, 1-1/2 In Hand Transfer PumpsSelf-priming pumps have corrosion-resistant construction and large, 1-1/2" ports to handle solids. Designed for pumping saltwater and freshwater only. Due to legislation, this product is restricted from use in drinking water applications. To expedite the handling of your order, please include a confirmation in your order notes stating that this product will not be used for drinking water. Any order that is for drinking water applications may be cancelled.