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Centrifugal pump 4kW DONGYIN 6SP17-7 Application area: Pumps of this series are designed for pumping clean water and can be used: for domestic and industrial use in water supply from wells and reservoirs (mandatory installation of a cooling jacket), for pumping water into reservoirs, for irrigation systems, for automatic water supply together with reservoirs when using control automation (control relays, pressure controllers). Pump part: Pump housing: stainless steel AISI 304 Discharge flange: stainless steel AISI 304 Pump shaft: stainless steel AISI 304 Shaft coupling: stainless steel AISI 304 Impeller: stainless steel AISI 304 Diffuser: stainless steel AISI 304 Electric motor: Motor type: oil-filled Stator windings: copper Motor housing: stainless steel AISI 304 Motor shaft: stainless steel AISI 304 Bearing: rolling (C&U) Voltage: 3 ~ 380 V Frequency: 50 Hz Insulation class: F Protection class: IP68 Operating conditions: Maximum pumped liquid temperature: +50 °C Submersion depth below water level: up to 80 m Borehole diameter: from 250 to 350 mm Impurity content containing