Southern India Urban Long-Distance Water Supply DG Multistage Pump Complete Export Project ｜ India · Tamil Nadu

Application scenario: TN TWADB municipal water supply AMRUT upgrade program, integrated intake from Cauvery River + deep groundwater, newly built intermediate booster pump stations and elevated delivery pipeline network. Southern region has year-round 40–48℃ high temperature, high humidity and salt spray. Groundwater has high TDS and hardness causing scaling. Frequent grid fluctuation (170–240V) and power outages. Long-distance transmission with large elevation differences. Original cast iron multistage pumps had efficiency only 68%–74%, valve throttling caused over 28% ineffective power consumption, impellers scaled and corroded within 3–6 months, constant-speed operation caused night pipeline bursts and daytime water interruption, and motor overheating failures.


Solution content: M&W ENERGY SAVING complete export DG multistage pump systems in three sets: DG150-50×6 / DG200-45×7 intermediate booster pumps (120–320m³/h / 280–360m / ≥84%, 415V wide-voltage motor + VFD constant pressure), DG80-30×4 terminal stabilizing pumps (30–80m³/h / 120–180m). Tropicalized design: 316L full wetted parts for chloride resistance, epoxy zinc-rich + tropical anti-corrosion coating, 415V wide-voltage F-class high-temperature IP54 motor + dedicated reactor, silicon carbide mechanical seal + external cooling, G2.5 dynamic balancing. CFD optimized impeller + VFD group control automatic load adjustment. Bilingual drawings + sea freight moisture-proof packaging + 2-year spare parts + lifetime local agent service.


Project results: comprehensive energy saving rate over 24%, overhaul cycle extended from 3–6 months to over 18 months, operation and maintenance cost reduced by 65%; 24h constant pressure water supply, significantly reduced pipeline leakage. Applicable to Kerala, Karnataka, Andhra Pradesh and other southern states.

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