plumbingandfiredesgn
Mechanical
Good morning,
Are air-admittance valves approved for common vents per the 2021 IPC?
§918.3: "Individual, branch and circuit vents shall be permitted to terminate to an [...] air admittance valve". There is no mention of common vents here, but maybe common vents are qualified as individual vents?
Are air-admittance valves approved for common vents per the 2021 IPC?
§918.3: "Individual, branch and circuit vents shall be permitted to terminate to an [...] air admittance valve". There is no mention of common vents here, but maybe common vents are qualified as individual vents?