procurement of most critical spares for instrument air compressors make kirloskar pneumatics co ltd , model t btd pm installed in units 1 and 2 , sgtps , mppgcl , birsinghpur , lp inner cover , lp valve holder suction , lp valve cover o-ring suction , lp valve cover o-ring discharge , hp valve cover suction , hp valve holder suction , hp o-ring suction valve cover , hp o-ring discharge valve cover , hp cylinder inner cover , hp cylinder outer cover , lp piston ring & rod assembly , lp piston head nut , lp piston washer lock , lp piston grub screw m8x1 . 25x20l , lp piston ring , lp cross head nut , lp sealing ring assembly , cross head bush , gudgeon pin , hp piston ring & rod assembly , hp piston ring , bearing upper half std , bearing lower half std , oil scraper , washer plain steel 15 . 5x3 , washer plain 14x3 . 3 , lp valve spring , castle nut suction , lp unloader o-ring , dome nut lp , split pin 3 . 2x32l , hp valve seat , hp valve guard , hp valve plate suction , hp valve spring suction , hp valve bolt suction , lp valve guard discharge , lp valve spring discharge , hp valve guard discharge , hp valve spring discharge , castle nut m12x1 . 5 dis , split pin hp disch . 3 . 2x22 l , hp hub suction , hp unloader o-ring , gear oil pump assembly , oil wiper ring , air suction filter element , oil element filter ( with micro filter ) , 3-piece packing , 6-piece packing , hp hex nut , lp piston guide ring , hp guide ring , hp valve cushion plate ( suc . ) , lift washer suction , stud m12x1 . 75x35l , hp stud m20 x2 . 5x80 , hp stud m20 x2 . 5x70 , hp valve copper packing , screw hex std m10x1 . 5x22l ( with hole )