Release Valve Body Of X Class Locomotives As Per Drg No - Goc/X/Sk-3-16594. Note: 1. For Equivalent Material Specifications, Refer Goc/X/Spe Cx-032. 2. For Material Specification The Firm Has To Submit Nabl Accredited Lab Test Certificate Along With Material Supply. [ Warranty Period: 30 Months Aft Er The Date Of Delivery ] ]