BlazeMaster(r) Fire Sprinkler Systems announced that its CPVC pipe and fittings are now listed by Underwriters Laboratories Inc. for use with listed light hazard, quick response, extended coverage sprinklers and may be installed without protection (exposed) when subject to the following additional conditions:
  • When exposed piping is to be installed below a smooth, flat, horizontal ceiling construction; and
  • When using fittings that are 1 1/2-inch or greater, only schedule 80 fittings may be used.