procurement of spares of ksb mil make control valves installed in boiler of 2x660 mw units , sstpp , mppgcl , dongalia procurement of spares of ksb mil make control valves installed in boiler of 2x660 mw units , sstpp , mppgcl , dongalia . , spare parts for control valve sl . no . 164144 , mil piston cylinder-41441 , size 4 , asme#2500 spl class , cv-56 , act size: 16 double acting +hw ( location :primary / secondary sh spray control valve ) , gland packing set , body gasket , seat gasket , seal ring , spare parts for control valve sl . no . 164149 to 164152 , model no . 38-41111 , size 2 , asme#1500 , cv-8 , act size: 13-6a2 ( location : rh spray control valve ) , gland packing set , body gasket , seat gasket , plug stem s/a , seat ring , cage