A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal. Size: 1/2" to 60", dn 12mm to dn 1500mm Pressure class: class 150 to 2500, pn 2.5 to pn 250 Facing: rf / rtj Into plywood case