supply, installation, testing, trial run and commissioning of submerssible axial flow pumpset at vellayani, thiruvananthapuram supply, installation, testing, trial run and commissioning of submerssible axial flow pumpset at vellayani, thiruvananthapuram , supply, installation, testing, trial run and commissioning of submersible axial flow pump set with the specifications listed below, suitable for handling fresh and silty water with rpm 960 (syn) or less. the material of construction of the casing, suction bell shall be cifg 260 with 2% nici, impeller cf8m (ss) with ss 316 or aisi 410shaft, vertical delivery pipe should be of ss 304 and horizontal delivery pipe (varies from 5 to 15 m length as per site conditions) of ms (is 226) with 6 mm minimum thickness. a metallic non- corrosive strainer of mesh size not more than 50 mm x 50 mm should be fitted at mouth of suction column. any hanging portion of the delivery pipe should be supported with suitable metallic supporting frames or rcc pillars of suitable size as per site requirements. the prime mover for the pump should be 3 phase tewc squirrel cage submersible induction motor 415 v +/- 10%, 50 hz +/- 5% connection with class “f” insulation,cubicle type panel board with all necessary protection units and instrumentation. auto transformer starter of reputed make , mccb including suitable metering, led indications, selector switch, single phase and dry running preventer, suitable capacitor etc., wiring and earthing should be as per regulations and specifications of kseb and electrical inspectorate. suitable water proof, copper power cable, about 20.00 m length or as per site requirement. a screen with 6 mm gi welded mesh with 50 mm x 50 mm opening size, (about 20 sq m area) framed in gi angles and gi tubes shall be fitted at the openings on top and sides of sump to prevent entry of unwanted materials to the pump through inflow water. the rate quoted should inclusive all the charges for supply, installation including petty civil works like pump bed (sump) deepening & concreting as per site requirement, trial run and commissioning, charges for factory testing, all type of transportation and conveyance, loading and unloading charges, gst etc., complete. , duty point head (m): 3.5 minimum discharge at duty point head (lps): 750 working head (m): 0.5 - 4.0 minimum overall efficiency (%) duty point head: 60 available connected load: 50 hp , the rate quoted should inclusive all the charges for supply, installation including petty civil works, trial run and commissioning, all type of transportation and conveyance, loading and unloading charges, gst, factory testing etc.