With an accumulator tank incorporated in the pressurized water system, the intervals between cut-in and cut-out will be longer when only small amounts of water are drawn off, resulting in less wear and tear on the pump with fewer starts and stops. This accumulator tank has a pre-pressurized tank and an internal rubber bladder to ensure smooth and reliable water pressure. It is easy to fit to new or existing systems. Capacity 1/2 Gal. Ports 1/2" Hose