Clesse CSR485 Propane Regulator with OPSO & Quicksafe Connector – Safe, Efficient, and Reliable Propane Regulation The Clesse CSR485 Propane Regulator is designed for single propane cylinder installations, providing a safe and efficient solution for high-demand gas applications. Featuring Over Pressure Shut Off (OPSO) technology, this regulator ensures maximum safety by automatically cutting off gas flow if pressure levels exceed the safe limit. Capable of delivering up to 35kW of power and maintaining a consistent 37 mbar pressure, the CSR485 is ideal for a wide range of propane-powered appliances. Complete with a Quicksafe connector and test point, it’s fully compliant with Liquid Gas UK Codes of Practice 24 Part 3 and recommended by NCASS