supply of spares for safety valves soot blower and burner elevation valves in unit i ii and iii boiler , spares for erv pilot valve model no: 1538vx-10w , pilot seat bushing , spares for 1749 wb safety valve (b2 & b3) , disc - 7001 , spares for 1749 wb safety valve (b1) , disc – 7005 , spares for heavy oil gun assembly , copper cladded asbestos gaskets of size: 26.8mm od x 19.3mm id x 3.5 mm thick , supply of spares for wall blower , rack and pinion with rack gear housing assembly , burner elevation valve as per technical specification enclosed. , nb 25mm (1”) /800#/ fcs/ nrv/ socket welded with ibr certificate in form - iii (c) , nb 25mm (1”)/800#/ fcs/ glv/ socket welded ends (micro switch burner (steam / oil) isolation globe valve along with limit switch mounting arrangement (cam assembly without limit swtch) with ibr certificate in form-iii (c).