Designed to control the flow of gas and water and provide air admittance.


What's the difference between a push-fit connection and a solvent-cement connection?

Push-fit pipes are quick and easy to install and can be easily separated. Solvent-weld pipes use solvent cement to make a strong joint, making them suitable for permanent fixtures.

Push-fit connections connect with push-fit pipes and solvent-cement connections connect with solvent-weld pipes. Some valves come with a removable adaptor that allows it to fit either connection, for example on the Bromic Air Admittance Valve 110mm.

What size air admittance valve do I need?

To choose the right air admittance valve, you'll need to know the fixture unit of the pipe and the airflow capacity required. Read more

Air Admittance Valve 110mm
(SKU: 1210702)
Air Admittance Valve with Adaptor for 32-40-50mm
(SKU: 1210701)
Recommended ApplicationDischarge stacks up to 45 metres or 10 storeys high32mm and 40mm for use as a connection to waste pipes to prevent water loss from trap seals. 50mm is for use on branch discharge pipes
Connection110mm push-fit connection
82mm solvent cement connection
32mm, 40mm and 50mm solvent cement connection
Airflow Capacity108.32l/s10.1l/s
Maximum Unit LoadingPipes – 19,799 fixture units
Stacks – 1230 fixture units
Pipes - 172 fixture units
Stacks – 10 fixture units
Temperature Range-20°C to +60°C-20°C to +60°C
A detailed comparison between Bromic Air Admittance Valves.

When should a ball valve be used instead of a butterfly valve?

Both ball valves and butterfly valves are valves that are used to control the flow of water or gas in a pipe system. Internally, butterfly valves consist of a thin disk and ball valves consist of a sphere-like disc that rotates as the handle is turned.

Whilst butterfly valves are usually recommended for use with larger pipe diameters, ball valves provide a tighter seal and are hence suitable for high-temperature and pressure services. Bromic supplies a wide range of ball valves with different thread connections and lever types for gas and water applications.

Please note: Butterfly valves should not be confused with butterfly handles (also known as T handles).

How do you distinguish between gas and water valves?

The colour of the handles on Bromic ball valves are used to distinguish their usage between gas and water.

Valves with a yellow handle are gas valves and are AGA-approved for use with Natural Gas and LPG.

Valves with a green handle are water valves and are WaterMark-approved for use with potable water. Almost all of Bromic's green handle valves are also AGA-approved for use with gas, with exceptions such as 1210437.

Refer to product information to review if a valve is compatible with gas and/or water pipelines.

Frequently Asked Questions for Valves including AAVs (Air Admittance Valves)
Valves - Frequently Asked Questions


Our brass valves are designed to suit a range of thread configurations, handle types and uses including ball valves, butterfly valves and cylinder valves. Designed for gas and water systems, our ball valves are AGA-approved and/or WaterMark-approved based on application.

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Bromic Plumbing & Gas