Quick Coupling Arrangement & Details For Detachable Pressure Gauges. Drawing No. Wd-911 01/S-5, Alt. 5, Item No. 1 To 14. Specification Conforming To 02 Abr 02 Amend. No. 4 Of Sept'2016. . Uvam I Tem Ref. : 3100389--Component Of Graduated Release Compressed Air Brake Equipments For Freight & Coac Hing Stock , Sub Item : 3100389006--Sub Item:Pressure Gauge For Air Brake System [ Warranty Period: 3 0 Months After The Date Of Delivery ] ]