DUPLEX FILTER (DF 40)
A filter on standby
The Duplex Filter 40 features a switching unit that allows to select which filter should be switched to operation and which to standby. This enables continuous filtration with no interruption of operation.
The high diversity of materials allows a wide range of applications for continuous filtration.

Technical data
Flow rate
max. m³/h
Filter fineness
> µm
Operating pressure
0 to bar
Flanges
DN 15 to
Automatic cleaning
No
Filter housing
Steel, stainless steel, GRP, plastic
Advantages
- Low investment costs
- No interruption of operation during manual cleaning
- Robust design
- Diversity of materials
- Filter monitoring by differential pressure indicator
High productivity
The Duplex Filter DF 40 for liquid media is suited for a variety of applications. It boasts high performance, a low space requirement, and fast and easy cleaning. Operation must not be interrupted during filter cleaning. This guarantees a continuous flow. The inlet and outlet flanges can be individually tailored to customer requirements.

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We will make sure that you get the filter that is perfectly tailored to your application. Our engineering office will design the filter to match your operating parameters. Our product is thus tailored specifically to your application.
Experienced partner
All DANGO & DIENENTHAL filters are handled by our specially qualified and regularly trained staff. Both our mechanical production and assembly departments have extensive expertise.
Certified testing
Our certified quality management system enables seamless monitoring and control of all production steps. This ensures early detection and troubleshooting, allowing us to offer you a high level of quality.
The team at your side
If you require staff for training or maintenance at your company, don’t hesitate to contact us. Our specially qualified employees will be happy to assist you.
Ideal production conditions
We have been producing filters in our factory in Siegen, Germany, since 1941. Our continuously improved, state-of-the-art range of machinery and modern factory buildings provide an environment that is essential for manufacturing high-quality products.