supply of procurement of distributor valve with relay valve including adopter along with isolating cock, pipe bracket with control reservoir and gasket for air-brake system of coaching stock as per rdso specification no.c-k209.procurement of distributor valve with relay valve including adopter along with isolating cock, pipe bracket with control reservoir and gasket for air-brake system of coaching stock as per rdso specification no.c-k209.,distributor valve with relay valve including adopter along with isolating cock, pipe bracket with con trol reservoir and gasket for air-brake system of coaching stock as per rdso specification no.c-k209. warranty period:- as per rdso specification i.e. 60 months from the date of supply or 40 months from the date of commissioning. [ warranty period: 60 months after the date of delivery ]