NIT NO.14, ITEM NO.01 (2021-22)WW-II

Dismantling of Double Beat valve from its position by cutting its rusted nut-bolts etc and removing of valve with the help of gas cutter and heavy manual labour.

Making/Supply of double beat valve of size 450 mm along with 2 Nos. Of C.I. Propellers as per sample.

Making and supply of inner SS Shaft of double beat valve including SS nut as per sample.

Making/Supply of M.S. shaft of size 20 mm dia and 1 mtr long (approx.) including threading on both sides of the shaft making of coupler size from one end and making of provision of pin in the coupler end to hold the valve (as per sample) complete in all respect.

Making/Supply and fixing of S.S. spindle with suitable size handle for operation. The size of spindle shall be 35 mm dia and 2.7 mtr long (approx.) and making of coupler size from one end & making of wheel size from other end, cutting of keys from both end, making of keys, drilling of hole for fixing of pin, threading etc. complete in all respect as per site requirement and fixing as required.

Making/Supply of EN-8 finished coupler of size 50 mm outer dia X 200 mm long including boring, threading etc. of coupler as per Double Beat Valve spindle & M.S. shaft of 20 mm dia. threading both sides as per spindle of valve & M.S. shaft and making of provision of pin in both sides of coupler (as per sample).

Making/Supply of EN-8 finished coupler of size 50 mm outer dia X 200 mm long after machining & boring of coupler as per M.S. shaft of 20 mm dia and S.S. spindle of 35 mm dia. threading one side as per M.S. spindle of 20 mm dia and boring on the other side as per 35 mm dia S.S. spindle for making of provision of pin in both sides of coupler (as per sample).

Fabrication & supply of G.M. Nut for the spindle and fixing the same in the head stock with thrust bearing of the double beat valve as required.

Fixing of Scaffolding material at site for safe execution of work. This includes to & fro, its loading & unloading and its dismantling after completion of work. Safety equipments have to be arranged for the workers as the work has to be done in the filter house drain channel. The same also includes individual safety equipments for workers i.e. Safety Belt, Helmet, Gum Boots, Safety Shoes, etc. as per site requirement.

Fabrication & supply of M.S. floor column of size 900 mm high from the base to the centre of wheel. The base flange of 300 mm dia X 25 mm thick drilled with 4 Nos. of holes of 20 mm dia. on 256 mm dia pitch circle with complete design for spindle.

Fabrication & Supply of upper holding system plate in the M.S. Floor column for holding the head stock with thrust bearing and tightening arrangement of nuts & bolts in it.This includes supply & fixing of trust bearing in the floor column.

Fabrication & Supply of M.S. Wheel of size 18” dia for operating of valve.

Drilling of hole in the RCC floor of filter house with the help of RCC Core Cutting Machine without damaging the whole floor. The size of core will be of 80 to 100 mm dia as for free movement of extended spindle of 35 mm dia.

Drilling of holes in about 10" thick RCC floor of filter house with the help of heavy duty RCC drilling machine without damaging the floor for fixing of floor column. The dia of the hole will be 22 mm approx. (4 Nos. of drills holes)

Supply of heavy duty foundation Nuts & Bolts (4 Nos.) of size 20 mm dia X 300 mm long for tightening of C.I. floor column on the floor including M.S. plate of size 300mm X 300mm X 10 mm for supporting foundation nuts & bolts from opposite (lower) side of the floor.

Fixing of all above mentioned materials at site with required civil work, nuts, bolts, fasteners, greasing, neoprene rubber packing etc. as per site requirement. This also includes Testing and Commissioning charges complete in all respect.

Painting the above material (M.S. parts) after cleaning with emery paper with 2 coats of primer and then 2 coats of synthetic enamel paint. Make of Paint : Berger/Nerolac/Asian

MK ENGG.CO.