supply of poh kit , poh kit for isolating cock for c3w type dv consisting of 3 items conforming to air brake mai ntenance manual for fright stock - g-97, read with all amendments, latest amendment. no. 3 of jan-2010. part no. of rdso approved firms sr. no (1) disc. o ring m/s faively transport india ltd. 603701000 m/s g reysham co. gi/c3w/0015/149 qty/kit 2. sr.no.(2) disc. valve m/s faively transport india ltd 603401000 m /s greysham co. gi/c3w192057 qty/kit 1. sr.no.(3)disc. o ring m/s faively transport india ltd. 5017080 00 m/s greysham co. gi/c3w/0015/10 qty/kit 2. [ warranty period: 30 months after the date of delivery ] ]