An auto air vent, also known as an AAV, a bottle vent, an auto purger or an auto de-aerator, is a mechanical device which has the purpose of automatically releasing air that is trapped within a water system to prevent pressure build up. Usually they will be fitted on the pump, and can also be found at the highest point of an appliance. Auto Air Vents are also used in heating systems and on water heater discharge lines to make sure that trapped air pockets can be relieved before pressure buildup causes damage to the system.
What can DHS do for you?
As a leading supplier of boiler spares and plumbing supplies for the uk, at Direct Heating Spares we strive to help you restore your boiler, central heating or system to full working order by supplying high calibre parts, produced by the manufacturers, along with punctual delivery and outstanding customer services across the UK. If this is the part your boiler requires, please take your time and locate your exact boiler model using the provided table and filters. Our UK based offices collectively contain over 200 years of boiler spares and spares distribution experience. Please feel free to contact us either by phone or e-mail on the information provided at the bottom of this page. We have a large array of boiler spares and materials and can help you find availability, part numbers and prices for delivery across the UK.