Particularly reliable motor operation: In contrast to conventional backwater valves, the Staufix FKA achieves the sealing with the help of a motor. This means that it is also suitable for wastewater containing sewage – not only for showers, washbasins and washing machines, but also for toilets.
Staufix FKA is available in two versions – for installation in an exposed drainage pipe and for floor slab installation, where you can choose between a black cover or tileable cover.
The backwater valve is available for floor slab installation and can also be installed in waterproof concrete by using an extension piece with central flange and an elastomer waterproofing membrane. The integrated drainage function ensures that any surface water that arises, for example due to a pipe break, will be pumped into the sewer despite there being backwater.
The system has a plug-in ready Comfort control unit with the SDS self-diagnosis system, a display for showing the operating status and maintenance information as well as a connection option for centralised control systems. It can be connected without the need for an electrician.
Radon protection: The radioactive noble gas radon is a natural element that is present virtually everywhere in our earth's crust. If it accumulates in a high concentration within enclosed spaces, it can be hazardous to humans: Radon is considered an environmental risk factor for lung cancer. The Staufix FKA for floor slab installation helps to prevent this health hazard from entering buildings. The backwater valve has been tested and certified as radon-proof.
Features & benefits
- Motor-operated sealing mechanism for reliable backflow prevention
- Suitable for wastewater containing sewage, including toilet waste
- Available in two installation versions: exposed drainage pipe and floor slab
- Choice between black cover or tileable cover for floor slab installation
- Can be installed in waterproof concrete using extension piece with central flange and elastomer waterproofing membrane
- Integrated drainage function pumps surface water into sewer even during backwater events
- Plug-in ready Comfort control unit with SDS self-diagnosis system
- Display for operating status and maintenance information
- Connection option for centralised control systems
- No electrician required for installation
- Tested and certified as radon-proof for floor slab installations
- During normal operations, both flaps are open so all wastewater can drain away fully
- In the event of backwater from the sewer, the valve is locked by a motor and then opened again automatically afterwards
Applications
- Toilets located below backflow level
- Sewage-containing wastewater systems
- Showers, washbasins, and washing machines below backflow level
- Floor slab installations
- Exposed drainage pipe installations
- Buildings requiring radon protection
- Installations in waterproof concrete
Technical specifications
| Backwater Protection Type | Type 3 |
|---|---|
| Available Nominal Sizes (DN) | DN 100, DN 125, DN 150, DN 200 |
| DN 100 – Length | 642 mm |
| DN 100 – Width (floor slab) | 590 mm |
| DN 100 – Width (exposed pipe) | 350 mm |
| DN 125 – Length | 645 mm |
| DN 125 – Width (floor slab) | 590 mm |
| DN 125 – Width (exposed pipe) | 350 mm |
| DN 150 – Length | 656 mm |
| DN 150 – Width (floor slab) | 590 mm |
| DN 150 – Width (exposed pipe) | 350 mm |
| DN 200 – Length | 720 mm |
| DN 200 – Width (floor slab) | 590 mm |
| DN 200 – Width (exposed pipe) | 350 mm |
| Actuation | Motor-operated |
| Installation types | Floor slab installation; Exposed drainage pipe installation |
| Cover options (floor slab) | Black cover plate; Tileable cover plate |
| Radon certification | Yes (floor slab installation) |
Article overview
Staufix FKA automatic backwater valve
Floor slab installation
With black cover
| Picture | Type of cover | Nominal size (DN) | Length | Width | Backwater protection | Item no. | Show |
|---|---|---|---|---|---|---|---|
 | Cover plate | 100 | 642 mm | 590 mm | Type 3 | 84100S | Show 84100S |
 | Cover plate | 125 | 645 mm | 590 mm | Type 3 | 84125S | Show 84125S |
 | Cover plate | 150 | 656 mm | 590 mm | Type 3 | 84150S | Show 84150S |
 | Cover plate | 200 | 720 mm | 590 mm | Type 3 | 84200S | Show 84200S |
With tileable cover
| Picture | Type of cover | Nominal size (DN) | Length | Width | Backwater protection | Item no. | Show |
|---|---|---|---|---|---|---|---|
 | tileable cover plate | 100 | 642 mm | 590 mm | Type 3 | 84100X | Show 84100X |
 | tileable cover plate | 125 | 645 mm | 590 mm | Type 3 | 84125X | Show 84125X |
 | tileable cover plate | 150 | 656 mm | 590 mm | Type 3 | 84150X | Show 84150X |
 | tileable cover plate | 200 | 720 mm | 590 mm | Type 3 | 84200X | Show 84200X |
Installation in an exposed drainage pipe
Installation in an exposed drainage pipe
| Picture | Nominal size (DN) | Length | Width | Backwater protection | Item no. | Show |
|---|---|---|---|---|---|---|
 | 100 | 642 mm | 350 mm | Type 3 | 84100 | Show 84100 |
 | 125 | 645 mm | 350 mm | Type 3 | 84125 | Show 84125 |
 | 150 | 656 mm | 350 mm | Type 3 | 84150 | Show 84150 |
 | 200 | 720 mm | 350 mm | Type 3 | 84200 | Show 84200 |