New Valve Standard
Underwriters Laboratories Inc. (UL) has published the Sixth Edition of the Standard for Safety for Alarm Valves for Fire-Protection Service, UL-193
The standard describes the assembly and performance requirements of allrm valves for use in automatic wet-pipe sprinkler systems for fire protection service.
Copies are available from UL for $3 each or $8 for the Sixth Edition and any future revisions that may be issued.to
Order with prepayment should be sent to: Underwriters Laboratories Inc., Attn: Publications Stock Dept., 333 Pfingsten Road, Northbrook, Ill 60062.
