NW 18 Sediment Pre-Filter
Maximum efficiency in domestic and industrial pre-filtration, with a multi-layer structure and centrifugal technology.
Technical specifications
View all- Filter precision
- 25 µm
- Filtration surface
- 190 cm²
- Flow rate
- 3.5 m³/hour
- Connection size
- 3/4”
Request received
Our experts will call you.
Free installation
2+8 Year Warranty
24/7 Technical Support
Stable performance under high sediment loads
Rainwater NW 18 has been specially developed to mechanically remove suspended solids such as sand, rust and silt from mains, well or rain water. Manufactured with Made in Belgium engineering, this model has a multi-layer filter structure that delays clogging even under high sediment loads. Its special centrifugal (cyclonic) technology separates coarse sediment by centrifugal force and directs it to the bottom of the bowl, reducing the load on the filter element. From homes to small businesses, it delivers long-lasting, consistent performance that protects your water purification systems and plumbing.
Multi-layer filter structure
Its advanced filter media offers a higher dirt-holding capacity than standard filters and operates stably even with high-sediment water.
Centrifugal pre-filtration
Its advanced cyclonic design separates heavy particles before they reach the filter, extending filter life and lengthening maintenance intervals.
Low pressure drop
With an average flow capacity of 3.5 m³ per hour, it provides uninterrupted flow without loss of performance or pressure drop in your plumbing.
Easy monitoring with a transparent bowl
The filter's level of contamination can be checked visually at a glance 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 18 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 18 is a sediment pre-filter fitted at the water inlet that mechanically captures these solid particles.
Who is the NW 18 suitable for?
For domestic and industrial pre-filtration, well water and plumbing protection. With a 3/4” connection size, it provides an average flow rate of 3.5 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: 3/4”
- Average flow rate: 3.5 m³/hour
- Filter precision: 25 µm
- Filtration surface: 190 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
- 3.5 m³/hour
Purification
- Standard filter precision
- 25 µm
- Filtration surface
- 190 cm²
- Country of manufacture
- Belgium
Power and size
- Weight
- 1.1 kg
- Connection size
- 3/4”
- Operating pressure
- 10 bar
- Max. operating pressure
- 16 bar
- Max. operating temperature
- 50 °C
General
- Brand
- Rainwater
- Model
- NW 18
- Warranty
- 2+8 Years
- Area of use
- Domestic and Industrial Pre-Filtration, Well Water, Plumbing Protection
- Distributor
- Rainwater Dış Tic. San. ve Tic. A.Ş.
Other sediment pre-filtration
Let's talk about NW 18
Our water treatment experts are here for you.
Request received
Our experts will call you.
Frequently asked questions
What does the NW 18 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 18 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 3/4” connection size, it provides an average flow rate of 3.5 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.