# Air Admittance Valve – 82.4 / 110mm – Black

Air admittance valve is an important component in modern plumbing systems, designed to maintain correct air balance within the drainage network while preventing sewer gases from entering the building.

It allows air to enter the system when negative pressure occurs, helping waste water flow efficiently and reducing the risk of trap seals being disturbed. Suitable for domestic and commercial drainage installations, it provides a practical ventilation solution where traditional venting through the roof is not required.

## Details

- **Price:** 29.17 GBP
- **Vendor:** BRETT MARTIN PLUMBING & DRAINAGE (B80B)
- **Type:** Soil Pipe & Fittings
- **Tags:** Air Valve, Black, National, Plumbing & Heating, Soil Pipe & Fittings

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 29.17 GBP | In stock |

## Images

- Black plastic air admittance valve for plumbing and vent pipe systems

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> Source: [Carvers Building Supplies](https://www.carvers.co.uk/products/black-110mm-82-4mm-air-admittance-valve-bs487b-soil)
> Updated: 2026-06-05