Bronze 180º Orientation Scupper Valve without Gag
Scupper valves (also known as storm valves) are swing-check valves with an optional closing device. The closing device is usually a hand wheel, but it can also be actuated. Scupper valves are usually found on ships in sanitary piping systems that have a ship-side exit and prevent seawater from entering the system during heavy seas. They are also used on overboard, discharge lines.