procurement of spares for ammonia and hydrazine lp dosing pumps for unit no . 10 , 11 at ph-iv , stps , mppgcl , sarni , spares for hydrazine dosing pump model: mc-2rl ( 6379 , 6380 , 6653 & 6654 ) and for ammonia dosing pump model: mc-2rl ( 6381 , 6382 , 6655 & 6656 ) drive end , worm shaft bearing ( part no . 25-pa-tb-01 ) , drive shaft bearing ( part no . 25-pa-bb-01 ) , crank bearing ( part no . 25-pa-bb-02 ) , spring dowel pin ( part no . 25-pa-sdp-01 ) , cross head pin ( part no . 25-pa-17 ) , connecting rod ( part no . 25-pa-15 ) , guide pin ( part no . 25-pa-14 ) , oil seal ( part no . 25-pa-os-01 ) , oil seal ( part no . 25-pa-os-02 ) , scale plate ( part no . 25-pa-25 ) , gasket ( part no . 25-pa-gt-01to 05 ) , crank ( part no . 25-pa-12 ) , eccentric ( part no . 25-pa-13 ) , worm wheel ( part no . 25-pa-06 ) , worm shaft ( part no . 25-pa-07 ) , liquid end , valve assembly ( part no . 25-pb-va-01 ) , teflon washer for valves ( part no . 25-pb-tw-01 ) , plunger ring ( part no . 25-pb-pr-01 ) , gland packing ( part no . 25-pb-gp-01 ) , plunger ( part no . 25-pb-pl-01 )