The Branson 803 Converter (EDP No. 101‑135‑040) is a 20 kHz piezoelectric ultrasonic converter designed for use with Branson 800 Series, including the 8700 welder and 187P power supply. It delivers approximately 1,500 W of ultrasonic power via high-quality piezo ceramic discs, with rugged construction and 1/2‑20 UNF mounting for reliable industrial performance.