This air admittance valve is suitable for fitting onto 1.1/2 inch soil and waste pipe systems. It allows air to enter the pipework, which assists with proper drainage and helps reduce the risk of trap siphonage in internal plumbing setups.
Typically installed on branch lines in kitchens, utility rooms, or bathrooms, the valve is used during both new installations and refurbishments where direct external venting is not possible. It is a practical component for maintaining system reliability in internal soil stacks.
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