The Liquid Ring self-priming electro-pump “ACB” series, with star impeller, have an outstanding self-priming capacity (up to 8m vertical). Only at the first start or after a long term disuse, it is necessary to fill the pump’s body with water, then, the pump automatically primes, also with the suction pipe empty.

Gianneschi suggest to install a filter and a clapet valve on the suction pipe in order to avoid a water reflux.