These pumps give high heads at low volume and are recommended for boosting water pressure for washdown lines and similar applications. Adds up to 60 PSI to existing pressure. Memphis' pumps are designed and built to standards developed over many years of reliable, efficient service. Motors are American made NEMA type. Volutes are cast from close grain grey iron with large intake and discharge openings to prevent back pressure and maintain hydraulic efficiency. The volute can be mounted in any of four positions so the discharge port is in line with the piping, and is equipped with four pipe plugs so one will be "UP" and one will be "DOWN" regardless of how the volute is installed. The impeller is screwed onto the shaft and locked with stainless nut and lock washer. The mechanical shaft seal is self-adjusting for longer wear, and can be easily replaced by maintenance personnel when necessary.