Automatic Pressure Modification (Apm) Device For Bogie Open Wagon Type Boxnhl (Mbs ) As Per Rdso Drawing No. Wd-09034-S-11, Alt.10, Item No.16 And Conforming To Rdso Spec No.Wd- 23-Bmbs-2008 (Rev.1) With Amendment-1 Of Sept. 2016. As Per Drg.No. Rdso Drawing No.Wd-09034- S-11, Alt.10, Item No. 16. Specn: Rdso Spec. No. Wd-23-Bmbs-2008 (Rev. 1) With Amendment-1 Of Se Pt. 2016. [ Warranty Period: 30 Months After The Date Of Delivery ] ]