External Air Admittance Valve - Plumbright - AX110 White
Not Available
Not Available
Currently unavailable
Currently out of stock
This product is not available at the moment. Check back later.
Product Information
Full details
The Plumbright External Air Admittance Valve (AX110 White) is designed for plumbers and homeowners needing to ensure proper ventilation in sanitary pipework systems. Its key benefit is preventing foul gases from entering a building while allowing free air entry, resolving issues caused by negative pressure in drains. A potential caveat is its external installation requirement, which may be less aesthetically desirable for some.
All features
| Model Part Number | AX110 White |
|---|---|
| Brand | Plumbright |
Extended Product Information
FAQs
What is an External Air Admittance Valve?
An External Air Admittance Valve (AAV) is a fitting installed in a drainage system that allows air to enter the pipes but prevents foul sewer gases from escaping into a building. It helps maintain correct system pressure.
Why do I need an External AAV instead of an internal one?
External AAVs are installed on the outside of a building, removing the need for traditional vents through the roof. This can be beneficial for aesthetics and in situations where routing a vent pipe through the roof is difficult or impossible.
How do I know if my drain system needs an AAV?
Signs include slow draining, gurgling sounds from pipes or fixtures, and water being siphoned out of toilet or basin traps. Building regulations often mandate their use in specific circumstances.
What size pipe does the Plumbright AX110 White connect to?
The AX110 White is designed for 110 mm diameter drainage pipes and features a push-fit connection.
Can I install this myself?
Installation requires basic plumbing knowledge and the use of solvent cement. If you are not comfortable with plumbing work or solvent welding, it is recommended to hire a qualified professional.
How often should I maintain the valve?
It is advisable to check the exterior of the valve periodically for any obstructions and clean it with a damp cloth. Ensure it remains unobstructed for proper airflow.
What is the difference between PVC-U and PVC-C?
PVC-C (Chlorinated Polyvinyl Chloride) is a variation of PVC-U (Unplasticized Polyvinyl Chloride) that has undergone an additional chlorination process. This makes PVC-C more resistant to heat and provides superior fire performance compared to standard PVC-U.
Troubleshooting
Drainage system is slow or gurgling.
Check that the air admittance valve is installed correctly in an upright position and is not blocked externally. Ensure the pipework connection is secure.
Water is being siphoned from trap seals.
Verify that the air admittance valve is functioning correctly and opening to allow air entry during discharge. Ensure it is rated for the specific discharge volume.
Foul odors are still present.
Confirm the air admittance valve is not the source of the odor; it only allows air entry. Check the main drainage system, seals, and connections for leaks or blockages that might be allowing gases to escape elsewhere.
Valve appears damaged or is leaking.
Inspect the valve for cracks or damage. If damage is found, it will need to be replaced. Ensure solvent weld joints were made correctly.
Pros and Cons
Pros
- Effectively prevents foul sewer gases from entering the building.
- Allows necessary air intake to maintain proper drain function and prevent siphoning.
- Durable construction with modified PVC-U and PVC-C for longevity and safety.
- Resistant to hot water discharges due to its high softening point.
- Eliminates the need for traditional, often unsightly, roof vents.
- Easy installation with push-fit 110 mm compatibility.
Cons
- External installation may not be preferred in all aesthetic situations.
- Requires access to an external wall or suitable external location for fitting.
- Relies on proper functioning of internal mechanisms; maintenance might be needed.
- Not suitable for all types of drainage systems without professional assessment.
- PVC-C material, while fire-resistant, can be brittle in extreme cold if not properly handled.
Setup, Compatibility & Care
Setup:
- Location: Identify a suitable external location for the valve, typically on an external wall or in a ventilated external void, ensuring it is above the flood level of the sanitary fixture it serves.
- Pipe Preparation: Ensure the 110 mm drainage pipe is clean, cut squarely, and free from burrs.
- Connection: Apply appropriate solvent cement to both the pipe end and the inside of the valve's push-fit socket. Immediately push the pipe firmly into the socket with a slight twisting motion until it is fully home. Hold in place for a few moments to allow initial bonding.
- Orientation: Install the valve in the upright position to ensure optimal function.
Compatibility:
- Designed for use with standard 110 mm push-fit and solvent weld PVC-U/PVC-C drainage systems.
- Suitable for use in residential and commercial sanitary drainage applications.
Care:
- Regularly check the valve for any obstructions externally (e.g., leaves, debris).
- Periodically clean the exterior of the valve with a damp cloth.
- Avoid using harsh chemicals or abrasive cleaners on the valve.
- Ensure the valve remains unobstructed to allow for free air entry.