Push Fit Air Admittance Valve - 4Trade - AF112

Name: Push Fit Air Admittance Valve - 4Trade - AF112
Brand: 4Trade
SKU: ifnlc7jdib
Price: 54.71 GBP
Availability: InStock

Valves are manufactured in modified PVCu and are extremely durable and designed to provide secure ...

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Product Information

Full details

This 4Trade Push Fit Air Admittance Valve (AF112) is designed for plumbing professionals and DIY enthusiasts needing to safely vent sanitary pipework. Its key benefit is providing secure, odor-free ventilation without the need for roof penetrations, while a potential caveat is ensuring proper installation below flood levels. The valve allows air entry into the system to prevent siphoning without releasing foul gasses.

All features

Model Part Number	AF112
Brand	4Trade

Extended Product Information

FAQs

What is an Air Admittance Valve?

An Air Admittance Valve (AAV) is a device that allows air to enter a plumbing drainage system without letting foul air escape. It prevents siphoning of trap seals and ensures proper system venting.

Can this valve be installed anywhere in the pipework?

No, this valve must be installed vertically and below the flood level of any connected appliance, as per BS EN 12380 standards.

What is the operating temperature range for this valve?

The valve is tested and approved for use in installations varying between -20°C and +60°C, requiring no insulation.

How do I connect the valve?

The valve is designed for secure solvent weld jointing to the sanitary pipework.

What is the airflow capacity?

The valve provides an airflow of 43 L/s.

Does this valve require maintenance?

It requires minimal maintenance. Periodically check the diaphragm seal for obstructions or damage.

What is the benefit of using PVC-C material?

PVC-C provides superior fire performance and a high softening point, meaning it is not adversely affected by hot water discharges.

Troubleshooting

Valve is not venting effectively / Persistent odors.

Ensure the valve is installed vertically and below the flood level. Check that the diaphragm seal is clean and not obstructed. Verify that the solvent weld joint is secure and not leaking.

Slow draining from connected appliances.

Confirm the valve is functioning correctly by checking the diaphragm seal. Ensure there are no blockages in the main soil pipe that the valve is venting.

Valve diaphragm appears stuck or damaged.

Inspect the diaphragm for any debris. If damaged, the valve will need to be replaced. Ensure installation environment is within the specified temperature range.

Pros and Cons

Pros

Prevents foul odors from escaping the drainage system.
Eliminates the need to cut holes through roofs or external walls.
Durable construction suitable for demanding environments.
Wide temperature tolerance means no special insulation is required.
Approved for installation below flood levels, offering installation flexibility.
Can serve as a rodding point for maintenance.

Cons

Requires careful installation below flood level to function correctly.
Relies on solvent welding for secure joints, which requires proper technique.
May require professional installation for optimal performance and compliance.
Not explicitly designed for applications outside standard sanitary pipework venting.

Setup, Compatibility & Care

Setup:

Ensure the valve is installed vertically.
Install the valve below the flood level of any connected appliance.
Connect the valve to the sanitary pipework using the appropriate solvent weld fittings. Ensure a clean, dry surface for solvent welding.
Allow adequate drying time for the solvent cement as per the manufacturer's instructions.

Compatibility:

Compatible with standard PVC-C and PVCu soil and ventilating stacks.
Suitable for use with appliances where the discharge point is below the valve.

Care:

The valve requires minimal maintenance. Periodically check the diaphragm seal for any obstructions or damage.
Clean any external dirt with a damp cloth. Do not use abrasive cleaners.