Air Admittance Valves (AAVs): Durgo Valves, Studor Vents, and Soil Vent Pipe Alternatives for UK Plumbers
Air Admittance Valves (AAVs): Durgo Valves, Studor Vents, and Soil Vent Pipe Alternatives for UK Plumbers An air admittance valve (AAV) allows air into the drainage system to prevent trap siphonage, without requiring a full open vent pipe through the...
