• Universal 3-in-1 Sizing: Fits 32 mm, 40 mm and 50 mm waste pipes using the included detachable adaptor-one valve covers all common sizes to simplify installations and reduce stock requirements.
• Connection Compatibility: Designed for solvent weld systems, making it ideal for mixed material setups without additional adapters or specialised connectors.
• Stops Odours and Trap Siphoning: Automatically admits air into the waste system to balance pressure and prevent trap seal loss-protecting rooms from unpleasant foul smells.
• Internal Use Only: Engineered for indoor installations above the flood level of connected fixtures-ideal for bathrooms, kitchens and utility areas where roof venting is impractical.
• Compact Serviceable Design: Smooth ABS construction with removable top cap for easy cleaning and maintenance; low-profile body suits tight spaces and discreet fitting.
• Easy Vertical Installation: Installs quickly on vertical waste pipe sections using standard fittings; no special tools required. Always fit above the highest connected trap water level for best performance.

The LavaTap air admittance valve is a high-performance internal waste vent designed to regulate pressure, prevent trap siphoning and eliminate foul odours in modern drainage systems. Built as a true 3 in 1 solution, this valve is fully compatible with 32mm waste pipe, 40mm waste pipe and 50mm pipework using the included stepped adaptor, making it a versatile choice for installers and DIY users alike.

Engineered for flexibility, this air admittance valve supports solvent weld installations, allowing seamless integration with standard 40mm waste pipe fittings and existing systems. Whether you are upgrading old pipework or installing new plumbing, it provides a fast, reliable solution without the need for multiple valves or complicated setups.

Designed for internal use, the valve automatically admits air into the system when negative pressure occurs, helping maintain water seals and preventing unpleasant smells from escaping into the property. It is ideal for use in kitchens, bathrooms, utility rooms and other areas where external venting is not practical.

The compact, low-profile design makes it a space-saving alternative to larger options such as an air admittance valve 110mm, while still delivering consistent performance. Manufactured from durable ABS, it offers long-lasting reliability comparable to leading brands such as floplast, with the added benefit of a removable cap for quick inspection and maintenance.

Suitable for vertical installation above the highest water outlet, this valve is a dependable choice for both professional plumbers and DIY users looking for a clean, efficient and easy-to-install ventilation solution.