NW 400 Sediment Pre-Filter
A high-performance filtration shield designed for uninterrupted water flow and equipment protection in production facilities.
Technical specifications
View all- Filter precision
- 25 µm
- Filtration surface
- 1010 cm²
- Flow rate
- 12 m³/hour
- Connection size
- 1 - 1/2
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Free installation
2+8 Year Warranty
24/7 Technical Support
Industrial power and efficiency
Rainwater NW 400 has been developed to mechanically remove suspended solids such as sand, silt, rust and mud from water. Thanks to its special centrifugal (cyclonic) technology, it separates heavy particles in the water by centrifugal force and directs them to the bottom of the filter bowl. This delays clogging of the filter cartridge, extending its service life and ensuring low pressure loss across the system. Manufactured with Made in Belgium engineering, the NW 400 delivers consistent water quality and long-lasting equipment performance in industry and facility management.
Centrifugal pre-filtration
Its advanced cyclonic design separates coarse sediment before it reaches the filter element, resulting in less maintenance and higher operating efficiency.
High-flow, uninterrupted performance
With an average flow capacity of 12 m³/hour, it provides powerful filtration on production lines without reducing water pressure.
Extended filtration surface
The 1010 cm² filtration area maximises particle-holding capacity and optimises filter replacement intervals.
Instant monitoring with a transparent bowl
The filter's level of contamination can be easily checked visually through the transparent housing, without having to shut down the system.
Highlights
Pressure loss chart
Pressure loss (bar) by flow rate; shows how much pressure the filter loses at each flow rate.
Easy maintenance
The bowl and filter element can be removed for easy cleaning or replacement.
NW 400 Sediment Pre-Filter
Adding value to your life with certification to international standards
The confidence of flawless quality: freshness and peace of mind for everyday life.
CE certificate
FDA certificate
Water Quality
TÜV Cert ISO 14001
NSF certificate- TÜV Cert ISO 9001
Düzen Norwest
Hacettepe University
Istanbul Technical University
Our systems use PARKER – LIQUIFIT – LEGRIS brand components and comply with the US Food and Drug Administration (FDA) regulations, CFR 21.
Product description
Sand, silt, rust and sediment carried in mains, well or rain water wear out plumbing, pumps and downstream purification units. The NW 400 is a sediment pre-filter fitted at the water inlet that mechanically captures these solid particles.
Who is the NW 400 suitable for?
For production facilities, industry and high-volume water applications. With a 1 1/2” connection size, it provides an average flow rate of 12 m³/hour.
How does it work?
As water passes through the filter element, the 25-micron pores let the water through and hold back larger particles; this is a purely physical, not chemical, filtration. The multi-layer filter structure retains dirt better even under high sediment loads, and the large filtration surface provides high flow and low pressure loss.
A sediment filter does not on its own remove dissolved chemicals such as chlorine, or microorganisms; for this reason, it is used as a pre-filter ahead of softening, activated carbon, reverse osmosis and UV systems, protecting them.
Technical data
- Connection size: 1 1/2”
- Average flow rate: 12 m³/hour
- Filter precision: 25 µm
- Filtration surface: 1010 cm²
- Operating pressure: 10 bar (maximum 16 bar)
- Maximum operating temperature: 50 °C
Installation, maintenance and warranty
Installed on the water inlet line. The filter element can be cleaned or replaced; you can tell the filter is full when the pressure difference increases and the flow drops. The product is covered by a 2+8 year warranty.
Technical specifications
Capacity
- Average flow rate
- 12 m³/hour
Purification
- Standard filter precision
- 25 µm
- Filtration surface
- 1010 cm²
- Country of manufacture
- Belgium
Power and size
- Weight
- 2.9 kg
- Connection size
- 1 - 1/2
- Operating pressure
- 10 bar
- Max. operating pressure
- 16 bar
- Max. operating temperature
- 50 °C
General
- Brand
- Rainwater
- Model
- NW 400
- Warranty
- 2+8 Years
- Area of use
- Production Facilities, Industry, High-Volume Water Applications and Facility Protection
- Distributor
- Rainwater Dış Tic. San. ve Tic. A.Ş.
Other sediment pre-filtration
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Frequently asked questions
What does the NW 400 do?
It mechanically captures solid particles in the water such as sand, silt, rust and sediment, protecting the plumbing and downstream purification units.
Does the NW 400 remove chlorine or bacteria?
No. A sediment filter only captures solid particles; activated carbon is needed for chlorine, and UV or reverse osmosis for microorganisms.
What are its flow rate and connection size?
With a 1 1/2” connection size, it provides an average flow rate of 12 m³/hour.
When should the filter be replaced?
As the filter fills up, the pressure difference between inlet and outlet increases and the flow drops; this indicates that it is time to clean or replace it.
How long is the warranty?
It is covered by a 2+8 year warranty.