Description
AUTOMATIC AIR ADMITTANCE VALVE
Type* AUTOMATIC AIR ADMITTANCE
Nominal size* 82 x 110 mm
Mat, body* ABS PLASTIC
Colour WHITE
Volume 3.742 cdm
Weight 0.354 kg
Manufacturer Old Part Number 153.3.4W
Manufacturer WAVIN – POLYPIPE CIVILS
Manufacturer Part Number 4S304W
An Air Admittance Valve (AAV), also known as a Durgo valve or a Studor vent, is a one-way valve used in plumbing systems to allow air to enter a drainage system when negative pressure occurs, preventing siphonage and the associated release of sewer gases. It effectively replaces traditional vent stacks, particularly in situations where extending a vent pipe to the roof is impractical or undesirable.
