The shaft seal is according to EN 12756

and after the pulsation damper

They ensure that the liquid in the dosing tank is mixed constantly

constant pressure and constant level with or without stop function

cue 3x525 600v ip20 1 5kw 99616829 The shaft seal is accordingThe Grundfos CUE is a complete range of variable frequency drives for effective speed control of any Grundfos pump without integrated drives. It is perfectly suited for pump applications in the water or wastewater network, building services, or industrial pumping solutions. CUE is an integral part of Grundfos iSOLUTIONS thus can be seen as a natural extension of the E pump range. CUE provides a series of pre defined application control modes; constant