This European Standard specifies requirements and describes test methods for flexible and rigid connectors used in CO2 -, Inert Gas- or Halocarbon gas fire extinguishing systems.This European Standard is applicable to connectors used:-between container valves and the manifold (type 1 and type 5 connector);-in pneumatic pilot lines (type 3 connector);in distribution pipework of fire extinguishing installations downstream of the manifold/selector valve (type 2 or type 4 connector).