Sanitary Welded Sight Glass Sanitary Welded Sight GlassProduct name: Sanitary Sight GlassType: Welded endsMaterial quality: AISI304, AISI316LStandard: DIN, ISO, 3A, ... , stop reversing valves, reliefvalves, bends, tees, reducers, unions, ferrules, etc. Sanitary Welded Sight Glass