Affiliations

Manufacturers Standardization Society
http://www.mss-hq.com/

Underwriters Laboratories - U.S.
Hangers, Pipe - VFXT.EX2833
Support Devices for Thermoplastic Sprinkler Piping - VIXH.EX15518
Sway Brace Devices, Rigid Type for Sprinkler Systems - VGMY.EX15530

Underwriters Laboratories - Canada
Hangers, Pipe - VFXT7.EX2833
Support Devices for Thermoplastic Sprinkler Piping - VIXH7.EX15518
Sway Brace Devices, Rigid Type for Sprinkler Systems - VGMY7.EX15530

FM Approvals
http://www.fmglobal.com/
Pipe Hanger Components for Automatic Sprinkler Systems - Class Numbers 1951, 1952, and 1953
Seismic Sway Braces for Automatic Sprinkler Systems - Class Number 1950

International Seismic Application Technology (ISAT)
Seismic Bracing for Mechanical, Electrical, Plumbing and Piping Systems
http://www.isatsb.com/