... IP55 4.Energy-saving CDLF hot water pump is vertical non-self priming multistage centrifugal pump specail in high pressure,with the ... boiler, high-rise building· Water treatment and RO systemElectric motor· TEFC motor, IEC standard· Aluminum casing, 50HZ or 60HZ, Single ... phase or 3-phase.· Protection class IP55, Insulation class F 50HZ Pump Performance Scope ...