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The FM-approved UNITED Fire Systems Model AR-1 Wet-Pipe Fire Sprinkler System Air Vent is the answer for avoiding wet-pipe system internal corrosion AND complying with NFPA 13.
The ESFR-22 RIS (22.4 K-factor) and ESFR-25 RIS (25.2 K-factor) both provide warehouse design flexibility by eliminating the use of in-rack sprinklers when protecting high-piled storage.
In addition to providing 3D layout and calculation capabilities, the newly expanded suite of tools enables users to deliver a fabrication-ready design and stock list.
Viega PureFlow PEX pipe and fittings have been listed by Underwriter Laboratories (UL) as approved for use in exposed fire sprinkler systems in basements.
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