Studor 20301 Mini-Vent with PVC Adapter 1 1/2-Inch or 2-Inch Connection

[Music] stewed or revolutionising the plumbing industry [Music] the technology of stewed or air admittance valves a AVS is revolutionising the way plumbing drainage systems are vented the extensive and costly network of pipes required to vent the plumbing drainage system through the roof is being replaced with these valves how can these a AVS replace the extensive vent piping for the next few minutes we'll take you through the technology of stewed or AAV since plumbing was brought indoors the water trap seal has served as the barrier to prevent sewer gas from entering the building through the fixture drains two inches of water in the trap teach the sewer gas inside the plumbing drainage system maintaining a normal healthy environment inside the building shortly after plumbing was moved indoors it was realized that the would lose the water seal when a difference in pressures occurred in