Models 45HB and 70HB are multi-stage, high-pressure, general-purpose centrifugal booster pumps, using enclosed impellers. Applicable for clear, non-hazardous liquids in general industrial services up to 180°F (82°C). Particularly suited for high-pressure booster services. All models are close-coupled to electric motors containing prelubricated bearings designed for continuous service. Threaded shaft extension is protected by a stainless steel sleeve/coupling combination. All models are equipped with single, unbalanced mechanical shaft seals. Units are shipped completely assembled and ready for installation.