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The LavaTap Air Admittance Valve (AAV) is designed for homeowners and plumbers seeking an efficient internal waste vent solution. Its primary benefit is preventing trap siphoning and foul odors by regulating air pressure in drainage systems. A key consideration is that it is designed for internal use only and must be installed above the highest water outlet. This versatile valve acts as a 3-in-1 solution, accommodating 32mm, 40mm, and 50mm waste pipes with an included adaptor, supporting both push-fit and solvent weld installations for seamless integration into various plumbing setups.
| Model Part Number | LAVA0050 |
|---|---|
| Brand | LavaTap |
No, the LavaTap Air Admittance Valve is designed and approved for internal use only. It must be installed within the building's heated envelope and above the flood level of connected fixtures.
The valve is a universal fit for 32mm, 40mm, and 50mm waste pipes, utilizing an included stepped adaptor for versatile compatibility.
Simply unscrew the top cap counter-clockwise to access the internal mechanism. Remove any debris and wipe clean with a damp cloth. Re-secure the cap firmly afterward.
An AAV automatically admits air into the drainage system when negative pressure occurs, preventing trap siphoning and the release of foul odors into the living space.
The valve itself is designed to accommodate both push-fit and solvent weld methods. However, the connection *to* the pipework must be consistent (e.g., use push-fit fittings for push-fit pipe, and solvent weld for solvent weld pipe) unless specific transition fittings are used.
Install the valve vertically on a waste pipe, ensuring it is positioned higher than the water level in the trap of the highest fixture connected to that waste pipe.
No, the LavaTap AAV operates passively using the natural pressure changes within the drainage system. It does not require any external power source.
Verify the AAV is installed vertically and above the highest fixture's flood level. Check that the cap is securely fitted and clean any debris from the valve mechanism. Ensure no other venting issues exist in the system.
Confirm the valve is functioning by checking for proper air admittance. Ensure the valve is not blocked internally and that the pipework is not obstructed. The valve might be undersized for extremely high flow rates or incorrectly positioned.
Ensure the valve is installed in the correct orientation (vertical) and that the cap is fully secured. Debris or damage to the sealing mechanism could be the cause; clean or replace if necessary.
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