supply ,installation ,testing ,trial run and commissioning of 50 hp vertical axial flow pump(3 numbers)for different padasekharams in alappuzha district supply,installation ,testing,trial run and commissioning of 50hp vertical axial flow pump(3 nos) for alappuzha , supply, installation, testing and commissioning of vaf pump set. suitable for handling brackish and silty water with rpm 960 (syn) or less. the material of construction of flange, suction bell, bowl, shroud shall be ci with 2 % nickel impeller shaft, shaft sleeve, fasteners and suction, delivery pipe should be in ss (size suitable for pumps) of suitable length various from to 6-10m as per site condition.the prime mower of the pump is to be 3 phase tefc induction motor with isi certification operating at 415v ±10%,±5% 50hz ±5 % connection with f – class insulation, 10mm 3 core water proof copper power cable, 20m as per sit condition. cubicle type fully wired panel board with all necessary protection units and instrumentation. auto transformer starter of reputed make mccb, led indicator, selector switch and single phase dry running preventer suitable capacitor wiring earthing should be as per regulations and specifications of kseb and electrical inspectorate. a screen with 6mm gi welded mash with 50 x 50 mm opening size (about 20 square meter area) formed in gi angles and gi tubes fitted at the opening on top and sides of sump to prevent entry of unwanted materials to the pump. proper i – section should be provided for supporting the motor mounting and pedestal suitable chain block and tripoed facilities to be provided for lifting the motor at least 1.00m above maximum flood level. the rate quoted should be inclusive of all the charges for supply, installation including petty civil work for installation ,testing, trial run and commissioning,all types of transportation and conveyance, loading, unloading charges, charges for factory testing gst etc:- , minimum discharge atduty point head (lps):700 duty point head (m): 2.00 working head range (m): 0.5-4.5 available connected load (hp): 50 minimum efficiency at duty point head (%): 65