procurement of spares for sulzer make valves installed at hp bypass system of unit no . 3 and 4 , at , sgtps , birsinghpur on limited offer basis . , hp-bp steam control valve ms-3/4type:- ars 90 bdrg . no . d-ao-103 . 219 . 542 design conditions:- 18 mpa/ 540 0c , valve seat ( d170/90x90 ) , nozzle body ( d228x228 ) , jet cage ( d200/125x235 ) , valve stem ( d107x937 ) , gland flange ( d152/52x40 ) , bolt with washer m24 t70 , threaded bolt with nut m20 t85 ( 110 ) , bolt m12 t100 , guide bush ( d62/50x60 ) , s . w . gasket bonnet ( d254/230x4 . 5 ) , s . w . gasket connecting flange ( d74/54x4 . 5 ) , hp-bp spray stop valve bfda-4/8type:- ha 20-a2drg . no . d-ao-103 . 219 . 575 . 500design conditions:- 25 . 7 mpa/170 0c , valve seat ( d91/20x54 ) , pressure seal plug ( d270/22x170 ) , inlet jet cage ( d91/57x169 ) , stem ( d32 x418 ) , screw m20 t80 , washer ( d32/21x4 . 5 ) , threaded stud m16 t65 ( 85 ) , nut m16 , graphite packing ring ( d38/22x8 . 0 ) , s . w . gasket ( d91/75x16 ) , hp-bp spray control valve bfda-5/9type:- e 22-3 sfdrg . no . d-a-103 . 219 . 614 . 500design conditions:- 25 . 7 mpa/1700c , valve seat , pressure seal plug e22s , valve stem ( d24x398 ) , guide bush ( d28/14x40 ) , gland bush ( d35/14x56 ) , guide bush , packing ring ( d28/14x7 ) , packing ring ( d80/60x10 ) , tension washer 10 . 5x17 , screw m10x20 , pressing ring , gland nut , hold ring , nut , screw plug