Sanitary Flanges Sanitary plate flanges available for purchase online from Sanitary Fittings. Available in 304 & 316L stainless steel alloys. Connect your process pumps to butt weld or tri clamp fittings. Orders over $100 include FREE SHIPPING! Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Tri-Clamp Flange Adapter Select options Sanitary Flange Weld Neck Select options Flange Gasket Kit Set Select options Flat Tube Flange (38SL) Select options Wall Flange Select options