bids are invited for ibr piston valve size 25 mm , ibr piston valve 80 mm , steam supply ibr valve of prs-1 header , ibr approved main steam stop valve-125mm , ibr steam stop piston valve-150mm , ibr globe valve dn50 , ibr steam stop globe valve-150mm , fs gate valve size 15mm 0.5 , ibr steam stop gate valve-150mm , steam header prs-2 steam control valve , nrv-3 for boiler feed water line , ibr vertical nrv screwed-0.5 , c.s. reflex type guage assembly , blow down valve size-50mm , complete mobery drum for boiler ibr , spring loaded safety valve i o 50-80mm , ibr gate valve- 50 mm , ibr non return valve- 150 mm , ibr safety valve for de- areator tank , ibr steam stop valve for de-areator tank , vaccum breaker for de-areator tank , safety valve for compressed air receiver , ibr feed water control valve , ibr recirculation water control valve