VIVA 32mm Anti-Vac Waste Trap Adapter
The VIVA 1¼″ Anti Vac Adapter is a compact solution designed to prevent negative pressure in waste systems and protect the water seal in your trap. When a waste system experiences negative pressure, it can pull water out of the trap, leading to foul odours, gurgling noises, and poor drainage performance. This anti-vac adapter helps balance air pressure in the pipework, supporting smoother flow while reducing the risk of trap siphoning — all without the need for additional venting.
This website listing is for one single unit. Choose the basket quantity you need for the job.
Key Features
- Prevents Negative Pressure in Waste Systems – Compact anti-vac adapter helps stop siphoning, maintains the trap water seal and reduces foul odours caused by negative pressure in waste pipework.
- Reduces Gurgling & Improves Drainage Flow – Helps balance air pressure to reduce gurgling noise and support smoother drainage performance without adding extra venting.
- Fits Standard 1¼″ (32mm) Pipe – Designed for 1¼″ / 32mm waste systems and fits neatly behind the trap, ideal for tight spaces, upgrades, replacements and retrofit installations.
- Universal Outlet for Common Pipe Types – Universal outlet suitable for plastic, copper and lead pipe, giving flexibility across a wide range of domestic plumbing setups.
- High Quality Polypropylene Construction – Manufactured from durable polypropylene for long service life and resistance to everyday household waste and cleaning chemicals.
Typical Uses
- Hot and cold water pipework
- Central heating installations
- Repairs and alterations to compatible pipe systems
Before ordering, check the stated size, connection type and available fitting space to make sure this product is suitable for your installation.




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