Summary Information (click on this NSN number for detailed information: 4820-00-003-0070)
Plug Valve, also referenced with federal logistics item name code 5490:
A valve designed to control the flow of a fluid by the rotation of a ported plug or plug sector within a suitable ported seat. the plug requires lubrication for ease of operation or contains a bonded composition seal(s). see also valve, seatless and cock, plug.