CM series of pumps are suitable for civil and industrial uses to pump clean water and chemically non-aggressive liquid. They have a compact size and are extremely reliable, very simple to use and almost maintenance-free. Pump body: cast iron Impeller: brass/cast iron/aluminum 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.