C.R.I. Vertical multi-stage pump maximize performance, demonstrates high degree of consistency and is economical.Pumps with VFD lasts longer as they can adjust the workload to meet the system requirement.Extremely quiet and low vibration when in operation. The smooth, automated start and stop , reduces water hammer.It also serves as the best replacement for the traditional roof tank water supply way, which is a source of water pollution.It avoids water pollution caused by roof tanks.