Dean RA3186 Pump Dean RA Bulletin Dean RA3186 Curve Dean RA IOM For proper sizing and selection use the Dean Selection Tool or give us a call. The largest, centerline mounted version of the air-cooled RA series pumps. Available in 7 sizes. Dimensionally interchangeable with R450 Series pump piping and baseplate dimension envelope. Thrust bearings are angular contact (pair). Temperatures up to 650F. Class 300 raised face flanges. Centerline mounted casing minimizes thermal growth about the pump centerlinewithout disturbing alignment. Pedestal mounted casing support holds the pump securely in place resisting thermal expansion piping loads. NOTE: Product is territory restricted.