tender for procurement of spares of instrumentation ltd. make gland seal steam supply and leak-off valves for tdbfp-turbines installed in unit no. 1 & 2 at 2x600mw, sstpp, mppgcl, dongalia (as per tender schedule) , gland seal steam supply valve model:-vst va1d, size-1.5, rating-ansi 600-rj, sr. no.-3516368, tag no.-mtw-70 aa-351, body-a217 wc6, trim:- ss316 st cv:1.6 , plug with stem for vst 1.5 , seat ring for vst 1.5 , gasket (v543) for vst 1.5 , packing (grafoil) for va1d #600 , gland seal steam leak off valve model:- vst va2r, size-3x1.25, rating-ansi 300-rf, sr. no.-3518212, tag no.:- mtw-70aa-352, body:- a217 wc6, trim:- ss316st cv:17 , plug with stem for vst 3 , seat ring for vst 3 , gasket (v543) for vst 3 , packing (grafoil double) for va2r #300