procurement of various high pressure nrvs and valves for various pumps, auxiliaries and turbine steam drain line of unit no. 1 to 4, ph i and ii, at sgtps, mppgcl, birsinghpur. , tag no. tas-29, tas to gland steam nrv ,size nb=80 mm type : check valve nrv, working pressure=17 kg/cm2 temp=2100c, material-cast steel, type of end : bw, pipe od=88.9mm, thickness=5.4 mm, class=300 , hph-5&6 vent to dearator globe valve nb size =50 mm, working pressure=19 kg/cm2, temp=2150c, material-cast steel,type of end : sw, pipe od=60.3mm, thickness=5 mm, class=1500 , hph-5&6 vent to dearator nrv nb size =50 mm,type : check valve nrv, working pressure=19 kg/cm2, temp=2150c,material-cast steel, type of end : sw, pipe od=60.3mm, thickness=5 mm, class=1500 , tas-28, tas to gland sealing isolating valve, body size 80 mm, type gate valve, max working pressure 17 kg/cm2, max working temperature 2100c, material-cast steel, end connection-bw, class-300 , ½ inch c-1500-sv-sw-hw-f 22 globe valve, material-alloy steel , 1 inch c-1500-sv-sw-hw- f 22 globe valve, material-alloy steel , 2 inch c-1500-sv-sw-hw- f 22 globe valve, material-alloy steel , forged alloy steel regulating globe valve motor operated without actuator , class-1500 (mounting flange provided at top of valve to suit existing actuator mounting)integral bonnet, fixed back seat, straight pattern, top assembly, end connection socket weld (servicing the seating surface and replacement of stem & disc without removing valve body from line),gland packing –graphite ,moc-body & bonnet -astm a182 gr. f22 cl.3,disc- 13% cr.ss410+ stellite gr.6, seat – integral+ stellite gr.6, stem -13%cr.(ss410), max working temp-550oc, max working pressure- 90kg/cm2. , size 25 mm , size 40 mm , size 50 mm , forged carbon steel globe valve ,end connection socket weld , class-800, hand operated, body & bonnet bolted connection, straight pattern, gland packing –graphite, moc- body & bonnet -astm sa105, disc/seat ring/ stem - 13% cr.ss410 max working temp-450oc, max working pressure- 90kg/cm2 , size 15mm , size 25mm , size 40mm , size 50mm , 100 nb, class-1500, cast carbon steel, gate valve, hand operated, butt weld