Tested to 1 million cycles; For performance that lasts, Wayne Pumps exceeds an average life of 1 million cycles. Wayne Pumps' energy-efficient motors and engineered design provide the ultra-quiet experience you won't believe. Durable epoxy-coated and rugged cast iron construction, for long life in tough sump pump applications. High performance; max. flow rate is 5100 gallons per hour; 3840 GPH at 10 ft. of discharge lift. Integrated vertical float switch with solid, leak free polypropylene float for automatic operation; 9 in. On level and 4 in. Off level. No need for weep holes; unique top suction design reduces clogging and prevents air lock condition. Engineered with upper and lower ball bearings, in sealed oil bath, for virtually silent operation. Designed with premium john crane carbon/ceramic shaft seals for quality that lasts.