sanitary straight sight glass Material:AISI304, AISI316L Standard:DIN/SMS/ISO/3A/IDF sanitary ... pipeline: DN12.5-150MM AND 1/2"-6"Application: pharmacy, beer, food, dary, beverage, cosmetic, chemical industrySeal ring: silicon, EPDM etcwe ... can supply this sight glass with clamp end, weld end and thread end connection