The Calor Essentials CSR 485 Propane Cylinder Regulator including Consumer Safety Reset (CSR) Over Pressure Shut Off (OPSO*) system.
A new LPG safety system developed for Calor enables the consumer to reset the regulator should the gas pressure exceed recommended limits, protecting appliances and property. Clear visible indication and resetting are performed by a "Push to reset" system, similar to electrical consumer RCD protection.
*OPSO is a recommendation under the new 2013 edition HSE L56 Approved Code of Practice and Guidance and a requirement of BS 6891 Annex E covering LP Gas fixed pipework installations in the UK.
This equipment is compliant with BS6891:2015+A1:2019 and must be installed by a suitably qualified Gas Safe Registered Engineer.