The use of an accumulator tank is recommended to ensure effective and reliable system function. With an accumulator tank incorporated in the system, the intervals between cut-in and cut-out will be longer when only small amounts of water are drawn off. The benefit is less wear and tear on the pump with fewer starts and stops. Pre-pressurized at 0.8 bar /12 psi. Volume 2 l, height 315 cm, ø 160 mm, weight 1,2 kg.