Product description Ganquan brand submersible borehole pump Model: qjt, qj, qjg series, 800 sizes in total. Flow rate: 5-600 m3/h (1.4-166.7l/s) Head: 6 600 m (19.7- 1968.5 feet) Well diameter: 150-400mm (5.9 -15.7 inch) Max. Rotate speed: 3000 r/min Pump size: 6-14 inch Operating limits: 1, maximum ambient temperature: 20 degree c 2, maximum immerging depth: 70m (229.6 feet). Motor: 1. Rewindable motor 2. Voltage: 380v 3. Frequency: 50hz 4. Max. Power: 250kw. Materials: cast iron, stainless steel Application: * applied to farm irrigation, water supply for inhabitant, industrial and mine enterprise, etc. Advantages: 1) the performance and efficiency of our qjt series pumps is better than qj series with national standard: with multi-impellers for one pump body, its single stage head is 1/3-1/2 times taller than that of qj and the efficiency is 1-3% higher than that of qj. 2) with perfect design and proper structure, it has the advantages of lower noise, longer service life, smaller volume, high efficiency, energy-saving, easy and convenient installation and maintenance, etc 3) greater weight for same bulk 4) completely meeting power standard by testing 5) long service life: normally 4-5 years.