Does any company make a 90 double sanitary tee that is schedule 40 instead of DWV? I see many but they are all DWV. (I'm looking for 3" for the vertical and can make anything 1-1/2" or bigger work on the horizontals).
Schedule 40 is a size, and not a pressure rating. Nmantas, are you looking for pressure-rated fittings, or just something mechanically stronger? What is the purpose of your search?