LavaTap Universal Air Admittance Valve 32/40/50 mm - Internal Use Durgo Style Waste Pipe Vent for Push Fit and Solvent Weld Systems - 3-in-1 Plumbing Ventilation Valve

The LavaTap 32/40/50 mm Universal Air Admittance Valve keeps waste systems balanced by allowing air in when negative pressure occurs, preventing trap siphoning and foul odours. Its 3-in-1 modular design fits 32 mm, 40 mm and 50 mm waste pipes using the included detachable adaptor, providing flexibility for plumbers and DIY users while cutting the need for multiple valve sizes.This valve is compatible with push-fit and solvent weld pipe systems and must be installed vertically for internal use only, above the highest connected trap water level. The durable ABS body includes a removable top for inspection and cleaning, ensuring long-lasting reliability and quiet operation.Ideal for bathrooms, kitchens and utility rooms, the LavaTap Air Admittance Valve offers a compact, professional-grade solution where external venting is impractical. Engineered to meet the functional principles of BS EN 12380 design standards.