procurement of isolating valve of 8.5 e 9 abl make coal mills discharge pf line of unit no. 1 to 4, 4x210 mw at sgtps, mppgcl, birsinghpur. procurement of isolating valve of 8.5 e 9 abl make coal mills discharge pf line of unit no. 1 to 4, 4x210 mw at sgtps, mppgcl, birsinghpur. , isolating valve of 8.5 e 9 coal mill discharge p. f. line ( 603mm id ) of unit no. 1 & 2, ph-i, sgtps, mppgcl, birsinghpur. , c.i. isolating valve for pf discharge pipe of 8.5 e-9 coal mills of unit 3&4 ph-ii, sgtps, mppgcl, birsinghpur ( as per drawing enclosed ) . material specification:- 1 ) valve body:- is 210 gr fg260 2 ) valve seat:- is 2062 gr a 3 ) inspection door, stuffing box & gland:- is 1865 gr 400 / 12 shaft ( steel ) :- is 2004 ci-ii