procurement of recommended spare of fisher make control valves installed at scaph of saph and paph of unit at 1x500mw sgtps mppgcl birsinghpur. , recommended spares of fisher make control valves installed at saph (a & b):-tag no.-ass-07, sr. no.-ia31942 & ia31943 size-6”, rating-300 bwe 40, body-wc6, type: ed, port size-7”, operating press.- 20kg/cm2, temp.- 210 °c , kit, repair (packing, single graph /lam, 3/4 s) , cage, e q% ( 6, 7 port) , gasket set (6 & 6x4 e) , ring, piston (6 in) , seat ring (6) , recommended spares of fisher make control valves installed at paph (a & b):-tag no.-ass-25, sr. no.-ia31924 & ia31816 , size-6x4”, rating-300 bwe 40, body-wcc, port size-4(3/8)”, type-ewd, operating press.- 20 kg/cm2, temp.- 210 °c , kit, repair (packing, single graph/lam, 1/2 s) , cage, eq% (4, 4 3/8 port) , gasket set (4 e, er&ez 6 ea 6x4 & 8x4 ew) , ring, piston (4 in) , seat ring (6x4, 4 3/8 port)