ESBE CRB120 Series Controller Adjustable operating range. For valves up to DN150. Superb regulation. Temperature Range [°C] - 5°C-95°C Torque - 15 Series CRA120 is a constant flow temperature controller suited for larger systems and valves such as 3F. The product is perfect for applications where a constant water temperature is required. Temperature settings is done by an easy-to-use push buttons and display interface. The controller is designed for operating rotary valves DN 15-150 and has an operating range of 30-180°. The series can easily be manually operated by a disconnection button and lever.