Bottle trap McAlpine 5/4" DN32 with air admittance valve white McAlpine 5130PF

McAlpine 5/4" DN32 bottle trap with integrated air admittance valve in white is a compact plumbing waste fitting designed for sinks and basins. The trap provides a sealed water barrier to prevent sewer gases entering the room while the built-in air admittance valve allows controlled air intake to avoid siphoning in installations where conventional venting is not feasible. Constructed for domestic and light commercial use, the unit combines a space-saving bottle trap profile with a DN32 outlet and a 5/4" connecting thread for common basin fittings.

Advantages

This bottle trap integrates an air admittance valve to maintain venting without additional pipework, reducing installation complexity in confined or retrofit situations. The white finish offers a discreet appearance beneath sinks and hand basins, while the compact bottle design saves under-sink space compared with larger trap types. The combination of DN32 outlet and standard 5/4" thread ensures compatibility with many basin wastes, and the trap is intended to provide a reliable water seal to prevent odors.

Suitable for

• Domestic bathroom and kitchen sinks where space beneath the basin is limited
• Washbasins in small commercial premises, offices or guest facilities
• Retrofit projects where adding a conventional vent pipe is impractical
• Installations requiring a compact trap with built-in venting to prevent siphonage

Key specifications

• Trap type: bottle trap with integrated air admittance valve
• Outlet diameter: DN32
• Thread connection: 5/4" to basin waste
• Finish: white
• Application: sinks and basins in domestic and light commercial settings

How to use

Install the bottle trap by connecting the 5/4" threaded inlet to the basin waste and aligning the DN32 outlet with the waste pipe. Ensure all compression fittings or seals are properly tightened to prevent leaks. The integrated air admittance valve must be positioned upright and in a location with adequate air access; do not enclose the valve within a sealed cabinet space. After installation, run water to check for correct drainage and to confirm the trap maintains the water seal without audible siphoning.

Usage recommendations

Locate the air admittance valve in a position with free access to room air and above the trap outlet level. Periodically inspect seals and clean the bottle trap to remove debris that could impede drainage. Do not paint or obstruct the valve; replace the unit if the valve shows signs of damage or persistent ventilation failure.