The automatic air vent is a pressure safety device in the central heating unit. They work by using buoyancy to release built up air. As water flows through the heating and heating system a float within the aav (automatic air vent) opens or closes dependan

Brand Name	Biasi
Colour	string
Material	string
Manufacturer Model No	BI1172111
Wear Type	string
Type	Automatic Air Vent
Certifications Met	string
Country of Origin	string
Protects From	string
Waterproof	string
Number of Pockets	string
Waist Size	ab54cb12gs
Toilet Cistern Capacity	FTW
Supplier Part Number	BI1172111