A-A-50498, COMMERCIAL ITEM DESCRIPTION: VALVE, FOOT, CAST IRON, BRONZE AND POLYVINYL CHLORIDE (PVC) (05-JUL-1990) [SUPERSEDING MIL-V-16720E & MIL-V-16721D]

A-A-50498, COMMERCIAL ITEM DESCRIPTION: VALVE, FOOT, CAST IRON, BRONZE AND POLYVINYL CHLORIDE (PVC) (05-JUL-1990) [SUPERSEDING MIL-V-16720E & MIL-V-16721D]., This commercial item description (CID) covers foot valves used in suction pipeline systems for transporting water and light petroleum distillates.