purchase of spares of ingersoll-rand make instrument air compressor model no. 14 and 8x7 ihe7 nl installed in vacuum pump house of ash handling plant of stps, sarni. , ring piston 8,part no. 95107710 , wear ring 8,part no. 97060149 , channel & spring set part no. 17287970 , guide valve , part no. 37039179 , guide valve , part no. 37041324 , guide holder , part no.31535867 , gasket valve seat , part no.30550628 , channel & spring set , part no. 17288077 , stop plate inlet , part no.30252944 , channel & spring set , part no.30515209 im , ring & spring set kit , part no.90829235-kit , ring piston 14 , part no.95215869 , wear ring 14 , part no.70210745 , guide holder , part no.31459027 , seat plate , part no.17278441 , channel & spring set , part no.17288002 , stop plate inlet , part no.30249361 , balancer flow , part no.37024106 , stop plate , part no.37157955 , bolt hex head 1/4 in x 1-1/2 in , part no.95105466 , screw cap hex head 1/4 x 1-1/4 , part no.95434734 , crank shaft , part no.94441508 , lp piston , part no.70404132 , hp piston , part no.70267455 , hp cylinder , part no.97073480 , lp cylinder , part no.70412077 , sheave screw , part no.95104527 , gasket set , part no.37024593 , port plate frame end , part no.70388566 , port plate outer end , part no.70400031 , assembly valve (in/dis) nl & fau a 60 , part no.70265962 , assembly valve discharge & crab a60 , part no.70265947 , assembly valve (in/dis) nl & fau a 465 , part no.31201965 , assembly valve discharge , part no.371040311 , valve inlet -lp , part no.37022118 , valve discharge-lp , part no.37154275 , valve inlet comp-hp , part no.37020419 , valve discharge-hp , part no.37022829 , ring piston , part no.30483051 , holder guide , part no.37025483 , o-ring , part no.95041539 , screw machine , part no.95261707 , spring unloader , part no.30673396 , stop plate , part no.31206303 , washer lock , part no.31225485