procurement of various type and size of industrial grey cpvc valves ( make geroge fischer , astral and spears only ) for dm , etp plant of 2x250 mw units of stps , sarni . , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual ball valve 375 with ptfe seat cpvc/epdm in following sizes , 1/2 dn 15 , 1 dn 25 , 1 1/2 dn 40 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual ball valve 546 ( ptfe seat ) with plastic competible buttress thread of union nut pvc-c/epdm in following sizes , 3/8 dn 10 , 2 1/2 dn 65 , 3 dn 80 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual cpvc wafer type check valve , epdm in following sizes , 2 1/2 dn 65 , 3 dn 80 , 4 dn 100 , 6 dn 150 , 8 dn 200 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual diaphragm valve 514 with circular diaphragm and threaded bonnet cpvc/epdm in following sizes , 1/2 dn 15 , 1 1/2 dn 40 , 2 dn 50 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual diaphragm valve 317 cpvc/epdm in following sizes , 2 1/2 dn 65 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual cpvc piston type cone check valve , socket end , seat ptfe , in following size , 1/2 dn 15 , 3/4 dn 20 , 1 dn 25 , 1 1/4 dn 32 , 1 1/2 dn 40 , 2 dn 50 , 2 1/2 dn 65 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual double eccentric buv 567 pvc/epdm in following size , d75 dn65 , d160 dn150 , d225 dn200 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439l strainer 305 cpvc/epdm , d50 dn40 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual screen perfor 305 pvc in following size , d50-0 . 5 , various type and size of industrial grey cpvc valves of make geroge fischer , astral & spears only to suit fitment in cpvc pipes confirming to astm f 441 and cpvc fittings confirming to astm f 439manual union cpvc/epdm in following size , pn10 d50- 1 1/2