SCM2 series are with two back to back impellers with higher pressure. They are used for high head values which are hard to reach with single impeller centrifugal pumps, suitable for civil and industrial uses to pump clean water and chemical non-aggressive liquid. Particularly be used for increasing the supplying pressure, feeding boilers and loading extremely. These pumps should be installed in a covered area, protect against the weather. Pump body: Cast Iron Impeller: Brass/ Aluminum/ Noryl Motor: Closed, externally ventilated Insulation class: B and F Protection class: IP44 or IP54 Mechanical seal: Stainless steel/Carbon-ceramic Shaft: 45# Steel / Stainless steel Thermal protector (if required) The normal power standard is 220V 50Hz single phase. Three phase 220/380V/50Hz, 220/440V/60Hz, single phase 230V,240V,127V, 110,115V/60Hz models are available on request.