One lamp systems - Flows up to 69m3/h
Multi-lamp SS Systems
Large scale SS closed vessel UV systems
MR1-220SS with compact coated steel control cabinet
Standard Control cabinet. Enclosures are available in GFRP - Stainless steel - Mild Steel
ÖNORM certified UV sensor
Automatic cleaning for UV system
UV installation options

SS Series for General Water Disinfection

ULTRAAQUA’s SS closed reactor series are built from high-grade AISI 316L steel are suitable for most water disinfection applications.

UV sensor and automatic mechanical cleaning systems are available. The three standard series 220 SS, 350 SS and 440 SS and the ÖNORM SSV Validated Series cover a large variety of flows and doses.

  • Corrosion-resistant electropolished stainless steel AISI 316L construction
  • Simple installation, operation and maintenance
  • Improved energy efficiency for clear water due to internal reflection of UV light
  • Operating pressure up to 10 bar
  • No tools needed for regular maintenance
  • Available with standard or advanced controls



Third party validated UV system

One entirely product series has been validated according to ÖNORM M 5873-1 – UV ÖNORM Validated systems for drinking water applications, based on ULTRAAQUA’s SwirlFlow™ technology.

Please note that 220, 350 and 440 series are based on the same design principles and quality components. Key components such as UV lamps, quartz sleeves, lamp drivers, sensors etc. are manufactured according to the exact same very high technical standards.


UVT – UV transmittance

UVT describes how well UV light penetrates the water. In relation to UV system sizing this parameter is as decisive as water flow rate. In general, the higher the water quality, the higher UVT. However, water that looks very clear can still have low UVT if it contains certain dissolved substances such as iron, manganese, etc. ULTRAAQUA offers free in-house measurement of UVT from a supplied water sample.  

For low UVT applications (UVT < 70%), please consider LUVT Series.


InLine (440 series) or U-configuration (75, 220 and 350 series)

In many cases it is an advantage that inlet and outlet are on the same level. This is often the preferred configuration for installations to fit existing pipe systems. If the UV system is installed with a bypass, the U-configuration is often the simpler solution.


Custom-made systems

ULTRAAQUA can offer optimized custom-made UV systems based on your specific requirements. ULTRAAQUA can offer UV systems with customized connection sizes and/or orientation. ULTRAAQUA can also offer even larger systems than the standard current available.


220 SS SeriesMR1-220SSMR3-220SSMR4-220SSMR6-220SSMR8-220SSMR12-220SSMR16-220SS
Max. flow37 m³/h155 m³/h230 m³/h350 m³/h500 m³/h760 m³/h1000 m³/h
Lamp power0.2 kW0.7 kW1.0 kW1.4 kW1.9 kW2.9 kW3.8 kW
Inlet/outlet dia.DN80DN150DN150DN200DN200DN250DN250
350 SS SeriesMR1-350SSMR3-350SSMR4-350SSMR6-350SSMR8-350SSMR12-350SSMR16-350SS
Max. flow60 m³/h260 m³/h390 m³/h600 m³/h870 m³/h1300 m³/h1650 m³/h
Lamp power0.4 kW1.1 kW1.5 kW2.3 kW3.0 kW4.5 kW6.0 kW
Inlet/outlet dia.DN100DN150DN150DN200DN250DN300DN300
440 SS SeriesMR1-440SSMR4-440SSMR6-440SSMR10-440SSMR14-440SSMR16-440SS
Max. flow68 m³/h330 m³/h550 m³/h1000 m³/h1400 m³/h1600 m³/h
Lamp power0.5 kW1.9 kW2.9 kW4.8 kW6.7 kW7.6 kW
Inlet/outlet dia.DN100DN200DN300DN300DN400DN400

*Flange size can be customized

*Max. flow calculated at UVT 96%, min UV dose 30 mJ/cm2



ULTRAAQUA products are available worldwide. Please use the contact form to the right and we will refer you to the nearest distributor.

Call us
+45 7023 1020


Response within 24 hours


Porvoo, Finland

ÖNORM Validated MR3-220SSV installed for disinfection of drinking water.

NYSE Euronext, London, UK

Multiple MR75SS UV systems for disinfection of cooling water.

Hirtshals, Denmark

Two MR1-220SS. UV disinfection of water supply to local dairy.

US Air Base, Kyrgyztan

Several Ultraaqua UV systems for sterilization of drinking water.