The Staufix Siphon backwater valve with DN 50 nominal size provides protection for individual drainage points such as washbasins, showers, or washing machines in rooms below the backwater level. It installs in drain fittings and is available as a siphon for washbasins and with an inlet funnel for heating system emergency overflow.
The standard-compliant sizing ensures compatibility in existing installations regardless of manufacturer. The valve features tool-free maintenance through a quick-release closure, making cleaning and upkeep convenient. The Staufix Siphon Ø 50 represents the first standard-compliant backwater valve according to EN 13564 Type 5.
Features & benefits
- Tool-free maintenance without tools via quick-release closure
- Standard-compliant design per EN 13564 Type 5
- Multiple configuration options (sink siphon, washing machine connection, inlet funnel)
- Guaranteed compatibility with existing installations regardless of manufacturer
- Suitable for single drainage points below backflow level
- Quick-release closure for convenient maintenance and cleaning
Applications
- Individual washbasin protection below backwater level
- Shower drainage protection
- Washing machine connections
- Heating system emergency overflow (with inlet funnel variant)
- Single drainage point protection in rooms below backflow level
Technical specifications
| Nominal Size (DN) | 50 |
|---|---|
| Backwater Protection Type | Type 5 |
| Standard Compliance | EN 13564 |
| Closure Type | Quick-release (tool-free) |
| Available Variants | 3 configurations |
Article overview
Staufix Siphon backwater valve
Staufix Siphon DN 50
Staufix Siphon DN 50
| Picture | Nominal size (DN) | Backwater protection | Installation situation | Item no. | Show |
|---|---|---|---|---|---|
 | 50 | Type 5 | installation as sink siphon | 73051 | Show 73051 |
 | 50 | Type 5 | installation as washing machine connection | 73052 | Show 73052 |
 | 50 | Type 5 | installation as inlet funnel | 73053 | Show 73053 |