1 This part of ISO 14520 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.
2 This part of ISO 14520 covers systems operating at nominal pressures of 25 bar or 42 bar with nitrogen propellant. This does not preclude the use of other systems.
ISO 14520-9:2000 history
2019ISO 14520-9:2019 Gaseous fire-extinguishing systems — Physical properties and system design — Part 9: HFC 227ea extinguishant
2016ISO 14520-9:2016 Gaseous fire-extinguishing systems - Physical properties and system design - Part 9: HFC 227ea extinguishant
2006ISO 14520-9:2006 Gaseous fire-extinguishing systems - Physical properties and system design - Part 9: HFC 227ea extinguishant
2000ISO 14520-9:2000 Gaseous fire-extinguishing systems - Physical properties and system design - Part 9: HFC 227ea extinguishant