Valve 14 : a movable mechanism that opens and closes to control the flow of liquid through a pipe or other passageway. Examples of valves include check, ball, and gate
HM Government, Strategic National Guidance, The Decontamination of Buildings, Infrastructure and Open Environment Exposed to Chemical, Biological, Radiological or Nuclear Materials, Appendix B: Glossary, Produced by the Food and Environment Research Agency on behalf of: The Cabinet Office, Department for Communities and Local Government, Department for Environment, Food and Rural Affairs, The Home Office, The Northern Ireland Executive, The Scottish Government and The Welsh Assembly Government, London, UK 2011. https://update.cabinetoffice.gov.uk/sites/default/ files/resources/CBRN-StrategicNationalGuidance.pdf , (Decont of build, infrastructure & open Env expos to CBRNE mtrls - Brit) {588}
