Sioux Chief TurboVent™ Air Admittance Valve, Series: 250, 1-1/2 to 2 in Nominal, Hub, ABS Body, Elastomer Seal, 2-3/4 in Dia x 2-1/8 in H, Domestic

Sioux Chief 250 series TurboVent air-admittance valves with fire-rated access box shall be installed as vent terminal for secondary venting within the plumbing system. Valve shall connect to DWV system via Sch. 40 adapter, and be made accessible after finish wall is installed. Valve shall incorporate an actuating device which spins upon activation to keep the elastomeric sealing surface clean and free of debris. During drainage, actuating device shall raise a designed distance under negative line pressure to allow optimal air flow into the DWV system. Valve shall provide a positive seal at 0 psi and under any positive line pressure to prevent sewer gasses from entering the living space.