This Major repair kit comes with everything needed for a large overhaul of Edwards EH2600/4600 pumps. The EH mechanical booster pumps utilize the unique hydrokinetic drive which can cut pump down times by 50%, when compared with direct drive pumps. EH series pumps have no bypass lines or pressure switches required, reduced capital and operating costs, universal voltage motors, air cooled motors – with water cooled options, and quiet, minimum vibration.