This air admittance valve is designed for use with above ground drainage installations to allow air into the soil pipe network, reducing negative pressure and preventing siphoning of traps. It is suitable for both 3" (75mm) and 4" (110mm) soil pipes, offering flexibility for fitting during new builds or refurbishment work.
The unit is fitted to soil stacks that terminate within a building, providing ventilation without the need for external vent pipes. Installation is straightforward with either a push-fit or push-over connection to compatible pipework, making it a practical solution for plumbers working on domestic or light commercial projects.
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