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BlazeMaster® Fire Protection Systems Blog

Installation best practices, design considerations, safety information and more from the experts behind the most specified nonmetallic fire sprinkler system in the world.

John Pritchard

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Updated Listings for Exposed Basements Allow More Flexibility for Design and Installation

Recent updates to our Underwriter Laboratories (UL) listings for exposed basements are likely a welcome change for contractors who work on NFPA 13D systems. Before the update, listings required system mains to run perpendicular to the joists; branch lines had to run parallel to the joists. With the updates to the listings for unfinished basements, BlazeMaster CPVC system mains and branch lines can be installed perpendicular and/or parallel to the joists. You just need to follow the proper procedures in the manufacturer’s installation guide. Here’s a quick rundown:

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