Booster unit with Active Driver Plus variable frequency drive fitted as standard, designed for pressurization and gardening and irrigation activities in residential building service, commercial building service, agriculture and irrigation system. The presence of the variable frequency drive allows you to adjust the power of the pumps according to the needs of the system, allowing energy savings. The support base is made of zinc-plated steel sheet with rubber feet, the delivery and suction manifolds are made of stainless steel. The expansion tank (one per group), together with the variable frequency drive, protects the system from water hammering. booster unit with 2 and 3 KVC AD also include a protection box. WRAS-certified units for the use with drinking water. DConnect service makes remote control possible (DConnect Box is supplied separately).