Styrene- acrylonitrile (SAN), transparent. This useful device optimizes cooling water flow during distillation. This helps to decrease operating costs by reducing water consumption. Operating pressure max. 2 bar, operating temperature for SAN max. 30 °C. For tubing of inner-Ø 6-11 mm. Styrene- acrylonitrile (SAN), transparent. This useful device optimizes cooling water flow during distillation. This helps to decrease operating costs by reducing water consumption. Operating pressure max. 2 bar, operating temperature for SAN max. 30 °C. For tubing of inner-Ø 6-11 mm.