ISO/TC 21/SC 5/WG 10 - Valves

This document specifies performance requirements, methods of test and marking requirements for pressure reducing valves intended to reduce the downstream water pressure in the piping for water-based fire protection systems. Within the context of this document, pressure reducing valves include both pilot operated pressure reducing valves and direct acting pressure reducing valves. Performance and test requirements for other auxiliary components or attachments to pressure reducing valves are not within the scope of this document.

This document defines performance requirements, methods of testing and marking requirements for fire pump relief valves intended to rapidly relieve the excessive water pressure in the supply piping for standpipe systems or sprinkler systems or both. Performance and test requirements for other auxiliary components or attachments to fire pump relief valves are not covered by this standard.

This document specifies performance, requirements, test methods and marking requirements, for check valves used to supply water in automatic fire protection systems. It is not applicable to trim valves.

This document specifies performance requirements, methods of test and marking requirements for pre-action dry alarm valves, valve sets and manufacturers' specified relevant trim used in non-interlock pre-action automatic fire protection systems. Performance and test requirements for other auxiliary components or attachments to pre-action dry valves are not covered by this document.

This document specifies the performance and testing requirements for accelerators used with dry pipe valves in fire protection systems to hasten the operation of the valves when one or more sprinklers operate.