Providing, Fitting and Servicing of Mechanical Valves along with allied works at Lift Irrigation Scheme Rakiban

Servicing/repairs to 1 No. flood affected foot valve of 200 mm dia. and p/f of new foot valve of 200 mm dia. in place of damaged one at the suction sides by way of dismantling the foot valves & extracting the same submerged in silt by using chain pulley blocks along with skilled labour & then removing the silt and then cleaning of mud/silt from pipes and foot valves using special tools and tackles and chain pulley block. Assembling of the new foot valves Complete dismantling of foot valves clearing the silt from hinges of foot valve to unchoke them. Applying sufficient quantity of grease to hinges. Further cleaning of mud/silt/debris from the cutted suction pipes and foot valves using special tools and tackles. Providing/fitting of new leather washers cut to size, adjustment of flaps/plate with repairs to hinges. Reassembling the 1 No. repaired old foot valve along with suction pipes done by providing/fitting of new sheets and nuts, bolts etc. Job further involves lowering of the foot valves along with suction piece by using chain pulley block and skilled labour, joining of the bends and the suction pipes by bolting via flanges with appropriate no. of new nuts and bolts. Complete job includes cost of material used and labour charges for skilled and semiskilled labour employed, safety provisions, transportation, less cost of rebate on account of old damaged parts and other hire charges at site.

Providing and fitting of 3.5 core armoured Al cable of 185 mm2 from electric pole to main switch approximately 20 meters length. The job involves disconnecting the damaged aluminium cable from Transformer to main switch and disconnecting all the connections. The Job further include Providing and fitting of 3.5 core 185 mm2 Al cable from main switch to voltage stabilize approximately 5 meters in length complete with insulation and thimbling. The job includes cost of material, hire charges of tools and tackles required for the job, labour charges for skilled/semiskilled labour at the site of LIS. Complete Job

Providing/Fitting and installation of 250mm Reflux valve by extracting the old damaged nonfunctional Reflux valve by cutting the old rusted nut bolts and flanges with gas cutters and installation of new reflux valve and welding it circumferentially from both ends of Rising Main. The job further includes Repairs/servicing to 2 Nos. 150 mm Dia sluice valves by extraction of damaged stem rods gland bushes, backseat and seat ring and p/f of same components of each sluice valve as per sample, p/f of gland packing and greasing the stem rod for smooth functioning of sluice valve. The job also involves repairs to 2 Nos. 150 mm reflux valves after extraction for the damaged components by opening the top cover with tools and tackles, extraction of the damaged disk, hinge, body seat ring, disc seat ring, gaskets, nut and bolts. P/F of new MS/CS disc, new MS hinge, hinge pin, body and disc seat rings and gasket for top cover with new nut and bolts. The job includes cost of material, hire charges of tools and tackles required for the job, labour charges for skilled/semiskilled labour at the site of LIS. Complete Job