An indigenous technical device placed at the edge of the Kayalnilam for pumping water out from low-lying areas to the major canals or backwaters. It consists of a submerged brass vessel that sucks water out and is run by an electric motor kept inside the pump house. The sucked water flows out through a rectangular brass box.
- Project: Kuttanad Kayalnilam Agrosystem, Kerala, India
- Climate: Tropical monsoon
- Year: 1880-1974 (a modified version is still in use)
- Water type: Seasonal mixing of saline and freshwater
- Landscape: Polder landscape in a deltaic basin
- Altitude: -3 – +1.5 m.a.s.l
- Soil condition: Sandy loam clay formed from riverine or lacustrine deposits
- Material: Wood and Brass
- Temporality: Seasonal
- Form: Point
- Use or Function: Pump water out