AGF Manufacturing announced the PURGENVENT Air Venting Valves designed to remove excess air from sprinkler pipes for the new NFPA 13 venting requirements.

Step 1: Choose an automatic air vent for installation on the slip joint piping under the sink or choose an air admittance valve for installation on the heavier glued portion of a drain line.

I never knew that there was a Christmas version of an automatic air vent for a residential steam heating system. When I finally found it, I instantly knew this story would be for the holiday issue.