1 Scope

1.1 This Standard contains requirements for water mist nozzles for use with water mist fire-protection systems intended for the protection of residential, light and ordinary hazard areas as well as shipboard machinery, control spaces, service areas, and public spaces. The intended application and use of a water mist nozzle is referenced in the Manufacturer's Design and Installation Instructions. See Section 49, Design and Installation Instructions.

1.2 This Standard is intended to address minimum fire-protection performance, construction, and marking requirements for water mist nozzles.

Summary of Topics

This new edition of ANSI/UL 2167 has been updated to incorporate the ANSI approval of March 9, 2021. The new edition also includes the following:

– Revisions to Clarify Requirement, Enhance Alignment With UL Sprinkler Standards, And Update Testing Details

– Hydrostatic Strength

– Revisions to Shipboard Light and Ordinary Hazard Area Fire Tests

– Light Hazard Area Fire Test

– Revisions to Performance Based Acceptance Criteria for Ordinary Hazard Fire Tests and Installation Instructions