Skip to Content Skip to Navigation

The Beaver A01–A06 Combination Air Valve has a multi-function design that makes it light, reliable, and easy to install.

The air valve’s three functions are to expel air that accumulates during filling, let in air during emptying to prevent vacuum formation, and remove air pockets when the valve is pressurised.

This series of Beaver Combination Air Valves is suitable for drinking water, sewage, irrigation, and water supply.

Technical specifications




A01 (PN10 Threaded)
A02 (PN16 Threaded)
A03 (PN25 Threaded)
A04 (PN10 Flanged)
A05 (PN16 Flanged)
A06 (PN25 Flanged)

Size range

DN25–300 (1–12”)

Pressure class


End connections


Material specifications


Ductile iron EN GJS-500-7

Cover, float ball, and internal mechanisms

Stainless steel A304
A316 (optional)


Elastomer NBR/EPDM


Internal stainless steel A2
External galvanised steel


Non-toxic epoxy for drinkable water
Internal and external thickness of 200 microns
Contact us for other materials and coatings

How we help you choose the right valves:

1. Tell us what you need

Talk to our experts about your application, which valves and controls you need, and any repair or maintenance concerns.

2. Choose the right solution

We’ll do all the analysis, discuss the options with you, and make a recommendation—the valves we’d choose in your shoes.

3. Get the job done

Get the right valves for the job, fitted out, tested, and ready to install. We’ve got your back with ongoing repairs and maintenance.

Talk to a valve specialist

Got questions? Need advice? Our valve specialists can give you practical advice to help you get on with the job.

Valve automation & repairs

Actuators. Positioners. Controls. Valve repairs. Whatever you need, our valve workshop can handle it.