procurement of emergency pump unit, servo valve and hydraulic valv etc for track machine., emergency pump unit as per plasser part no:hy40.510a and substitute part no. hy40.510. make: plasser imp , rexroth imp , hydac imp, danfoss imp , servo valve as per plasser part no:el-t76.00-mo and star uk part no. 650191k make:plas ser, star hydraulics, uk, moog & servo control dy.ce / cpoh / tm / rayanapadu, andhra pradesh 30.00 numbers , hydraulic 4 way valve as per plasser part no: hy6rsd-b / a and rexroth part no.4we6d6 x / eg24n9k4 and veljan denision part no. 4d01-3151-0101-b1-goq-51, make: plasser , rexroth , velja n-denison , hydraulic valve as per plasser part no. hy06rsj-b and rexroth no. 4we6j6x / eg12n9k & veljan - denison part no. 4d01-3208-0302-b1-goq-51, make - plasser , parker-denison , veljan-d enison, bosch -rexroth. , pressure reducing dc valve as per plasser part no. hy511.14 / 75 or hy511.14 and rexr oth part no. zdr10da2-30 / 75y-so52 and veljan-denision part no. zdr-05-a-5-a1, make - plasser , rexro th , veljan-denison. , pressure limiting valve as per plasser part no. dbds.6g1.x / 315, make : plasser , rexrot h