Maintenance of Water Supply System Replacement of existing failed 250mm dia Surge Relief Valve installed on 900mm dia MS Raising Mains at Verna Pumping Station

Supplying at store or site of work including railway freight carting loading unloading stacking etc. Cast steel double flanged manually operated sluice valves having body door bonnet stuffing box hand wheel etc. in graded cast iron i.e. ASTM A-216 Gr WCB. inside screw non rising type stainless steel AISI 410 spindle. Spindle Nut and four faces of gun metal as IS:318 Gr. 2 LTB. Valve conform to IS:14846 - 2000 and flanges faced and drilled to IS:1538 part 4 & 6. Valve sizes 400 mm and above will be provided with ball thrust bearing and gear box. Valves are to be tested in different test pressure rating: Class 150 (Class A);Size in mm;250

Hydraulic Design Analysis & Pipeline for Pressure Surge analysis manufacturing supplying of electrically/ hydraulically operated surge Relief Valve with integral flanges of high strength D.I/ C.I. body with pressure rating PN 1.6/ PN 2.5 having two pressure sensing pilots reinforced diaphragm of EPDM material or piston based water release mechanism etc. complete as directed by Engineer incharge.; 250 mm

Installation testing and commissioning of Surge relief valve by gas cutting the existing M.S. pipe and welding fixing a M.S. tail piece length as per the site conditions.; 250 mm

Hoisting laying cast iron sluice valves/butterfly valves/reflux valve of size given below at location in pipeline etc. complete as directed as per IS:2685-1971 CLASS I; Nominal diamter in mm.; 250

Making flanged joints for C.I./D.I. Pipes and specials with rubber insertion nuts and bolts including necessary hydraulic testing etc. complete including cost of rubber insertion nuts and boltsas directed by the engineer in-cha rge.;Nominal diamter inmm.; 250