Which States Require Air Vents? NFPA 13 (2016) Adoption Map

NFPA 13 (2016) and later editions require air vents on all wet pipe fire sprinkler systems utilizing metallic pipe. Jurisdictions across the US have been adopting these editions on their own or by reference in an IBC 2018 adoption. This chart shows which states have NFPA 13 (2016) adoption (or later editions) and which states will be adopting soon.

NFPA 13 (2016) adoption map

*Please consult your AHJ to confirm local code requirements

AGF’s PURGEnVENT line of manual and automatic air vents make it simple to meet code requirements with flexible installation options. Plus, PURGEnVENT patented air vents help protect your system from corrosion by releasing trapped air.

For questions about NFPA 13 (2016) changes regarding air vents and corrosion or NFPA 13 (2016) adoption, please contact us to talk to a member of our technical staff.

What is K-Factor?

AGF’s TESTanDRAIN and Inspector’sTEST valves come in a range of k-factors to best meet your needs. But what is k-factor?

K-factor helps to calculate the discharge rate from fire sprinkler heads. The K-factor also determines proper orifice sizing. AGF offers a full range of orifice sizes to accommodate any K-factor for all TESTanDRAIN models.

K-factor conversion chart
*Available on 1-1/4″, 1-1/2″, & 2″ size units only **Available on 1-1/2″ and 2″ size units only

Do you have more questions about K-factor? Contact us at 610-240-4900 to speak with a member of our technical staff.