... 3A, IDF Sanitary Clamped Sight Glass(sight glass,union-type sight glass,sanitary sight glass)Product DescriptionProduct name: Sanitary Sight GlassType ... : DN25-DN100 & 1"-4", applied to the stainless steel pipeline systemMedium: Beer, Dairy, Beverage, Pharmacy, Food, Water ... manufacturer specialized in producing kinds of sanitary valves and fittings. Such as butterfly valves, check valves, ...