Fixed firefighting systems. Components for gas extinguishing systems - Requirements and test methods for check valves and non-return valves Ingestion-build-82396 NOTE 4 For the requirements

NOTE 4 For the requirements for high-voltage power supply installations

Contents of BS EN 10111:2008 include:

Care is to be taken when using this method so as not to introduce any unlawful discrimination

although not comprehensive

Fixed firefighting systems. Components for gas extinguishing systems - Requirements and test methods for check valves and non-return valves Ingestion-build-82396 NOTE 4 For the requirementsThis European Standard specifies the requirements and describes test methods for check and non return valves for CO2, inert gas or halocarbon gas fire extinguishing systems. Non return and check valves allow the passage in the direction of flow and they prevent flow in the reverse direction. This European Standard is applicable to check valves installed between container valve and manifold and non return valves installed in pilot lines, except those