Basepump water powered sump pump RB750 RB750 - Basepump - rate: 750-900 GPHBasepump is an extremely reliable, very powerful, water powered backup sump pump system. With no battery to wear out or maintain, no charger to plug in or monitor, it is designed as an automatic, independent system from the primary sump pump. Pumping rate: 750-900 GPH. Included with Standard Basepump: Basepump Ejector One-way check valve prevents reversal of water flow into sump to protect your home. One-way valve control to protect potable water supply. Mounting clamps and screws, Plastic cable tie straps, PVC fittings Discharge relief tee 6 feet of flexible PVC discharge hose Hydraulic transfer tube Suction screen keeps foreign objects out. Water alarm with 9 Volt battery warns you of high water situation, independent from pump. Complete installation instructions, fully illustrated and easy to follow.