WBMAD/NDDM/WW/NIeT303/26-27_32

Excavation of trial pit (3Mx1M,Depth up to 3M)for fixing of pumping main lines etc,taking every precaution against damage of SW pipe line,electrical cables,gas main,sewer line,telephone cables etc as under ground obstruction including 3.75 mm thick timber shoring,earth cutting dewatering,barricading and again back filling etc as per direction of the Engineer In charge

All types of CI specials (viz. Bend, Tee, Taper, Tail piece, Collar etc. size conforming to IS specification 1538:1993 a) socket & spigot end i) 80mm to 300mm

Supply of pig lead 99.999% purity

Supply of spun yarn

Dewatering by pumps including all leads. lifts and making all arrangement of dispisal where continuous flow of water from a source other than natural or ground water is encountered in case of emergency maintenance works related to leakage. breakage and making wet connections.note:- In case of any other situation demanding such emergency dewatering use of this item is to be apporved by the Superintending Engineer/Tender Accepting Authority. This item shall be executed on the specific direction duly supported by proper clarification of the E.I.C

Supply of PVC pipes & fittings (medium duty)confirming to ASTMD-1785 abd threaded to match with GI pipes as per IS :1239 (part -I)

Mechanical scrubbing cleaning scouring & flushing of water mains by cutting at least 50mtrs Appart by cutting trenches irrespective of any pavements & making joints with matching Mechanical Compression Flexible Collar Coupling jointing as per IS 8329 complete with sealing rubber gasket of EPDM quality IS 5382/1985 type 4, cast iron follower glands & mild steel nut bolts zinc coated , mending good the trenches temporarily as per direction of engineer-in-charge by supply pipe cleaning machine pump for dewatering & socket piece double collar etc all complete. 100 mm

Supply and delivery of CIDF sluice valve (Special type) PW-1.00 of different dia make with CI double flanged non rusting spindle sluice valves conforming to IS 14846 -2000 with latestemended having body dome/bonnet and cover of C.I.Gr-F.G 210mtr. spindle of IS-6603 G.R-12/Gr-13 non-magnetic, nuts seat rings are of Gunonetal as per IS:318 LTB-2 flanges and drilled to IS:1538 Part IV & VI valves are suitable for max. working pressure of 10kg/cm2(seat test) and body tested to 15kg/cm2.N.B: The above item should be procured from the reputed manufactures as per deptt. approved vender list v) 100 mm dia.

Supplying including cost of installation of cast iron mechanical compression flange socket tail piece for connecting flange fittings to the plain(spigot) ends of CI/DI pipes 100mm

Supplying, fitting and fixing of C I Mechanical Compression flexible collar couplings suitable for inch size CI pipes and D I pipes confirming to class B of BS :1211 complete with sealing rubber gasket of EDPM quality IS :5382/1985 Type 4 Cast iron follower glands and mild steel nut bolts zinc coated, The whole assembly should be mechanically and hydraulically tested to the provisions as laid down in IS : 1538. Fitting and fixing should be in proper position with proper care of main pipe line for leak proof condition. 300 mm