supply of kit of spares for feed back cylinder of isolating valve assembly of m / s escorts make modular brake controller type esbc-lll m comprising of 09 items as ( i ) valve head, m / s escorts drg / parts no.6801, qty / kit:1 no, ( ii ) k ring, m / s escorts drg / parts no. 6802, qty / kit:1 no, ( iii ) filter, m / s escorts drg / parts no.6809, qty / kit:1 no, ( iv ) compression spring, m / s escorts drg / parts no.6810, qty / kit:1 no, ( v ) sealing ring a30 x 36, m / s escorts drg / parts no.6811, qty no, ( vi ) compression spring, m / s escorts drg / parts no.6803, qty / kit:1 no, ( vii ) tappet, m / s escorts drg / parts no.6806, qty / kit:1 no., ( viii ) grooved ring for self lapping cylinder, m / s escorts drg / parts no.6916, qty / kit:1 no. and ( ix ) felt for self lapping cylinder, m / s escorts drg / parts no.6915, qty / kit:1 no. [ warranty period: 30 months after the date of delivery ]