• Product purpose: allows air into the soil or waste pipe system to prevent negative pressure and trap-seal loss without letting foul gases escape
• Size & connection: designed for 110 mm (4-inch) soil pipe systems, with push-fit entry for quick installation onto solvent weld or push fit pipe
• Material & finish: black ABS/ PVCu body suitable for concealed or exposed installation, offering durability and discreet appearance
• Performance specification: meets BS EN 12380 for air admittance valves, rated for internal and external use where ventilation allows
• Installation benefit: reduced roof-vent requirement � installs in accessible location, at least 200 mm above highest wet entry point to stack
• Suitable applications: ideal for multi-storey installations, loft conversions, buildings where external roof-venting is impractical, and soil?stack termination points

The LavaTap 110 mm Air Admittance Valve is a compact, maintenance-free venting solution designed for use in UK soil and waste systems. Featuring a female socket with a built-in rubber seal, it allows for a simple slide-on installation with both push fit and solvent weld pipe systems-no cement or tools required. This one-way valve opens automatically when negative pressure occurs in the drainage system, allowing air in to prevent trap water from being pulled away. It then closes tightly to block odours and sewer gas from entering your home. With no moving parts, it operates silently and reliably over time. Ideal for use where roof venting is impractical-such as basements, kitchen islands, or multi-storey buildings-the LavaTap valve must be installed vertically, in a ventilated, accessible location, at least 200 mm above the flood level of the highest connected fixture. A reliable choice for modern plumbing.