The changeover of the pumping side can be easily automated because no other valves are needed for that procedure. When the other pump unit has been replaced with a blind service cap the other unit can be used as a single pump unit. The two motor units (motor and impeller) of a twin pump can be of different sizes (different duty-points).
(*the impellers are unidentical because of different directions of rotation.) !
T- and AT-SERIES














