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Submersible pumps3" and 4" seriesSeries description Wilo-Sub TWU 4Accessories• Cooling jacket pipes• Diaphragm pressure vessel• Cable kits for potable and process water• Float switch• Switchgears• Connection and installation materialConfiguration• No suction mode is possible with these units!• The unit must be fully immersed in water during operation.Pump curvesH[m]Wilo-Sub TWU 4-...-C300280260240220200180160140120100806040200TWU 4 - 04.TWU 4 - 08.TWU 4 - 02.TWU 4 - 161 1,5 2 2,5 3 4 5 6 7 8 9 10 12 14 16 20Q [m³/h]1~230 V or 3~400 V, 50 Hz, p = 1 kg/dm 3 , v = 1x10 -6 m 2 /s, ISO 9906 Annex A, = pump efficiency28 Wilo Water Management catalogue – 50 Hz – Water supply – Raw water intake – Edition 2012/2013 – Subject to change without prior notice