Gaseous fire-extinguishing systems -- Physical properties and system design -- Part 9: HFC 227ea extinguishant
This standard has been revised by ISO 14520-9:2019
ISO 14520-9:2016 contains specific requirements for gaseous fire-extinguishing systems, with respect to the HFC 227ea extinguishant. It includes details of physical properties, specification, usage and safety aspects.
ISO 14520-9:2016 covers systems operating at nominal pressures of 25 bar, 42 bar and 50 bar with nitrogen propellant. This does not preclude the use of other systems.