VIVA 32mm Magna Self-Sealing Waste Valve
The VIVA 32mm Magna self-sealing waste valve is a 1¼” waterless trap designed for compact waste pipe installations where a standard water-seal trap may be difficult to fit. Instead of relying on a standing water seal, the Magna valve uses an internal membrane which opens when water is discharged and then closes again to help prevent foul smells and sewer gases entering the building.
This VIVA WTSTC32 self-sealing waste valve is suitable for installation under sinks, basins, bidets, baths and urinals. It can be fitted horizontally or vertically, making it a useful option for tight spaces, multi-orientation waste pipe layouts and installations where a waterless trap is preferred.
Key Features
- 32mm / 1¼” self-sealing waste valve for suitable waste pipe installations
- Waterless trap design helps prevent odours without relying on a traditional water seal
- Internal membrane opens to discharge water and closes again after use
- Horizontal or vertical installation for flexible fitting in tight spaces
- Supplied with 90° inlet and straight compression adapters
- Will not dry out like a traditional water-seal trap
- Polypropylene construction in a white finish
Typical Uses
- Bathroom basin waste pipe installations
- Compact under-sink waste pipe layouts
- Bidets and urinals
- Installations where a standard basin trap may not fit
- Waste pipe layouts requiring horizontal or vertical fitting
- Applications where a waterless trap is required
Important: Drain cleaning products should not be poured down the Magna valve.
Before ordering, check your existing waste pipe size, available fitting space and installation requirements to make sure this 32mm self-sealing waste valve is suitable for your setup.


















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