... (sight glass,sanitary sight glass) Specification: DN25-DN100 & 1"-4", Sanitary Stainless Steel Sight Glass (sight glass,sanitary sight glass) Features Specifications:Sell ... : AISI304, AISI316LStandard: DIN, ISO,IDFSpecification: DN25-DN100 & 1"-4", applied to the stainless steel pipeline systemMedium: Beer, Dairy, Beverage, Pharmacy, Food, Water, Cosmetic ...