HM 330 Series / Parallel Pumps

1 tank,  2 switch box,  3 water meter,  4 manometer - intake side,  5 centrifugal pumps (2),  6 manometer - delivery side,  7 measuring orifice,  8 speed sensors (2),  9 differential pressure sensor,  10 speed-controlled motors (2),  11 mount for torque wrench