THIS VALVE CAN BE DESIGNED IN THE DESIRED SIZES. I HAVE ADDED THIS AS AN EXAMPLE ONLY.CURRENT DESIGN HAS BEEN DESIGNED FROM 168 PIPES DIAMETER.I CAN DESIGN AND SEND THE SIZE YOU WANT FOR THIS VALVE MADE FROM PIPE.ALSO, ALL OF THE BUTTERFLY VALVE MODELS I HAVE ARE AVAILABLE IN DWG FORMAT MANUFACTURING PROJECTS.THANK YOU...