Air Admittance Valves (AAV’s) allow air to freely enter the sanitary pipe work system and prevents the escape of foul gases into the building. They are suitable for 32-110mm waste and soil pipes.

  • Removes the need to penetrate the outer roof shell
  • Prevents the loss of water from traps and seals
  • Saves on cost of additional pipes and fittings
  • Labour cost savings
  • Environmentally friendly – no foul gases emitted