Indian Institute Of Technology Tender

1000 USGPM flow at min 55 Mtr Head, 45KW, Complete as above

Condenser water pumps with constant speed Pumping.

SITC/Replacement of factory designed, built, tested and assembled Non-self priming ,horizontal/axial end suction, vertical/radial end discharge long/closed Single Stage, Single Suction, Centrifugal volute Pumps suitable for variable flow chilled water recirculation system. Suction and Discharge pipe connections shall be as per pump OEM design or of same size .The pump shall be of back pull out design i.e. the power head (motor, pump head, and impeller) can be removed for maintenance or service while the pump housing shall remains in the pipe work. The mechanical seal should be easily replaceable without damaging pump & motor shaft and also without removal of the suction & discharge pipeline. Impellers shall be made of bronze enclosed type with smooth surface for minimum friction loss, Impeller shall be keyed to the shaft and secured by impeller lock nut. Pump Shaft shall be made of Stainless Steel. Coupling shall be closed coupled type, the pump stub shaft is fastened directly on the motor shaft with key & set screws. The pump housing shall be with a replaceable bronze neck ring to reduce the amount of liquid running from the discharge side of the impeller to the suction side. Pumps shall be suitable for PN-16 rating, the liquid cavity shall be sealed off at the pump shaft by an internally flushed mechanical seals to ensure maximum seal face lubrication, heat dissipation and debris removal without vulnerable external flush tubing , and with carbon seal seat vs. silicon carbide seal ring . The pump coupling shall be of long coupled type / closed-coupled type with stub shaft/flexible coupling. Pump and motor are mounted on a common steel base frame factory fitted. Pump and motor are mounted on a common steel base frame in accordance with ISO 3661, All external and exposed cast iron part of pump have an epoxy-based coating made in cathodic electro-deposition (CED) process. The motor shall be of TEFC Sq.Cage flange mounted, totally enclosed fan-cooled motors with IP 55 enclosure class 'F' insulation, suitable for 415V, 3ph, 50hz power connection. Motor should be 4 Pole. Motor efficiency shall be of IE3, minimum efficiency of pump shall be  75%. Hydrostatic pressure testing of the complete pumping package to be done at 150% of Maximum working pressure etc complete as required. complete as required.

1600 USGPM flow at min 25 Mtr Head 37KW, Complete as above

Supplying, laying/ fixing, testing and commissioning of following nominal sizes of Chilled/Condenser water piping plumbing i/c fabrication of bends / elbows, tees, reducers etc) inside the building (with necessary clamps, wooden/puf support, vibration isolators, primer/ enamel paint, fittings but excluding valves, strainers, gauges etc.) as per specifications and as required complete in all respect. Note:- The Pipes of sizes 150mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia and above.

25 mm

40 mm

200 mm

250 mm

400 mm.

450mm

Only Laying /fixing, testing and commissioning of MS Heavy 'C' class pipe ( IS :1239 up 150mm & IS :3589 above 150mm) of following sizes for chilled/ condenser water piping on surface / underground ( including fabrication of bends / elbows, tees, reducers, sockets, unions etc) with wooden / Puff block, masonry support / MS angle-clamp two coats primer/ enamel paint, vibration isolators and fittings as per standard specification complete as required. (Pipe will be provided by the institute free of cost).

25 mm

40 mm

Supplying & fixing insulation on existing MS 'C' class pipe over exposed surface/underground of following sizes with 50 mm thick upto 150mm pipe and 75 mm thick above 150mm pipe fire retardant thermocole ( polystrene) moulded pipe section of density 20 kg/cu.m after a thick coat of cold setting adhesive (CPRX compound) , 500g polythene faced hessain cloth, wiremesh, sand-cement plaster & painting two or more coat to give even shade after applying one coat of ordinary paint etc complete as required.

200 mm

400 mm.

Supplying & fixing, insulation on existing pipe overhead/ underground of following sizes without 25 mm thick Aluminium faced XLPE foam pipe section fixing with dentride and tightening of insulation section PVC tape to be wrapped all around the joints. of insulation etc complete as required.

25 mm

40 mm

Providing & fixing of Thermal protecting layer (double coat ) painting over exposed MS/copper pipe insulation outer surface with aapproved make chemical, shade and glass clothc as per standared specification compete as required.

25 mm

40 mm

Supplying, fixing, testing and commissioning of following BUTTERFLY VALVE (MANUAL) with C I body SS Disc, Nitrile Rubber Seal & Oring PN 16 pressure rating size 200 mm to 400 mm gear type with removable wheel and below 200 mm with hand lever operated for chilled water/hot water circulation in the chilled water plumbing duly insulated to the same specifications as the connected piping and adequately supported as per specifications as specified.

40 mm

200 mm

250 mm

400 mm

Supplying, fixing, testing and commissioning Balancing Valve with built in measuring facility with C I body flanged construction with EPDM coated disc with long pitch with protected out pipe with insulation & PN 16 pressure rating for chilled / hot water circulation as specified.

200 mm

Supplying, fixing, testing and commissioning of following (NRV) NON - RETURN VALVE with duel plate of CI body SS plates vulcanized NBR seal flanged end & PN 16 pressure rating for chilled/hot water circulation including insulation as specified as the connected piping and adequately supported as per specifications

250 mm

200 mm

Supplying, fixing, testing and commissioning of following in position the Suction guides of Carbon Steel body with SS Pall rings strainer NBR seal flanged IS: 6392-1971 end & PN 16 pressure rating for chilled / hot water circulation including insulation and adequately supported as per specifications.

250 mm dia

200 mm dia

Providing and fixing in position the industrial type pressure gauges with gun metal/SS/ brass valves, nipple,elbow,socket etc complete as required.

Providing & fixing in position of SS ball valve of following size with compatible to proportioning Copper/MS pipe i/c all necessary accessories, support /hangers, including old dismantling if any complete as reqd.

25 mm

Supplying, fixing, testing and commissioning of following in position the Single ARC Neoprene Rubber Bellow with Integral Rubber Flanges 230 PSI, Drilling: ANSI B16.5 Class 150 & PN 16 pressure rating for chilled / hot water circulation including insulation and adequately supported as per specifications.

200 mm

250 mm

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge.

Providing and fixing RCC foundation for CHW & CDW pumps including making of MS Angle 31x31x3 frame of required size, reinforcement with 6/8 mm dia M.S. bars,reinforcement with 1:1.5:3 (1 cement : 1.5 coarse sand(zone-III) : 3 graded stone aggregate 20 mm nominal size) and making grooves etc. complete as per direction of Engineer in-charge.

Buy Back Items

Buy Back cost of existing Old & defective CHW/Chilled water pumps with motor including dismantling ,removing from existing position and cartage etc complete as required.

Buy Back cost of existing Old & defective CDW/Condenser water pumps with motor including dismantling ,removing from existing position and cartage etc complete as required.

Buy Back of Old & defective Insulated CHW and non insulated CDW water Pipes including cutting, dismantling , removing from existing position and cartage etc complete as required.

450 mm dia.

400 mm dia.

250 mm dia.

200 mm dia.

50/40 mm

32/25 mm

Buy Back of Old & defective Butterfly Valves including dismantling , removing from existing position and cartage etc complete as required.

200 mm

250 mm

300 mm

350 mm

400 mm

450 mm

Buy Back of Old & defective Non - Return Valves including dismantling , removing from existing position and cartage etc complete as required

250 mm dia

200 mm dia

Buy Back of Old & defective Y-Strainer including dismantling , removing from existing position and cartage etc complete as required

250 mm dia

200 mm dia

Buy Back of Old & defective MS/Iron Base of CHW/CDW pumps including dismantling , removing from existing position and cartage etc complete as required

Old & defective MS/Iron Base of 05 x 75 hp CHW pumps

Old & defective MS/Iron Base of 05 x 60 hp CDW pumps