Description
Tower Automatic Air Eliminator Valve – 22mm (AIR22)
The Tower Automatic Air Eliminator Valve (AIR22) is designed to improve the efficiency and reliability of central heating systems by automatically and progressively removing trapped air from the system. Available exclusively in 22mm, with an optional 22mm cold feed variant, it plays a vital role in maintaining smooth system operation and consistent heat distribution.
As air accumulates within a heating system, it can cause unwanted noise, reduced circulation, and increased strain on pumps and other components. The AIR22 continuously vents air as it forms, helping to reduce system noise, improve overall performance, and maintain optimal operating conditions. By preventing air-related restrictions, the valve also helps to minimise the risk of pump failure, contributing to longer system life and reduced maintenance issues.
The valve is designed for soldered installation only and is not compatible with compression fittings, ensuring a secure and permanent connection once installed. Its straightforward fitting process and dependable operation make it a popular choice for both new installations and system upgrades.
Widely specified and used by British Gas, the Tower Automatic Air Eliminator Valve has a proven reputation for reliability in professional heating installations. Its robust construction and effective air removal make it an essential component for improving system efficiency and long-term performance.
The Tower AIR22 Automatic Air Eliminator Valve provides quiet operation, enhanced circulation, and dependable protection for pumps and system components, making it a trusted solution for modern domestic heating systems.
Full technical specifications, installation guidance, and cold feed variant details can be found in the specification tab above.
Key features
- Air Elimination: Automatically removes air to improve efficiency.
- Noise Reduction: Reduces noise caused by trapped air in the system.
- Enhanced System Lifespan: Minimises pump failure by maintaining smooth operation.
- Trusted Brand: Widely specified by BRITISH GAS for professional use.
This Air Separator 22mm & 28mm is a practical choice for domestic heating systems where dependable operation, clear control and straightforward installation are important.
- SPARES2GO Air Separator 22mm
- 22mm air separator -- Helps noise reduction -- Used by professional fitters
- For soldered copper connection only -- Automatically and progressively eliminates air from the system -- No moving parts
- Reduces pump failure by reducing cavitation -- Simple installation -- For open-vented systems only -- Plumb into the flow between boiler and pump
- Vent pipe connects to top connection and terminates over the feed and expansion tank -- Removes air from system water with greatest efficiency, if the air separator output is within one metre of the pump


























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