Sanitary SS Threaded Sight Glass Material:SS304,SS316L Size:1"-4",DN25-DN100 Standard:SMS,DIN,3A Sanitary SS Threaded Sight Glass1)Type: ... , CosmeticWe are a manufacturer specialized in producing kinds of sanitaryvalves and fittings. Such as butterfly valves, check valves, ballvalves, diaphragam ... valves, reliefvalves, bends, tees, reducers, unions, ferrules, etc. Sanitary SS Threaded Sight Glass