440SS InLine - 220SS - 350SS
InLine UV disinfection principle
440-InLine Series and Cabinets
MR1-440SS UV units
Compact control unit for 220W UV system
Compact control unit for 75W UV system
UV installation options
Automatic cleaning for UV system

UV disinfection of water in stainless steel reactor vessels

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 series 220 SS, 350 SS and 440 SS and the ÖNORM MR16-350 SS 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

ACN series, Certified and approved for low UVT

ULTRAAQUA’s ACN Series is parallel to its SS and PP Series. It has been designed for high turbidity water applications.

A more compact design reduces the distance between lamps and eliminates “dark areas” resulting from low UVT.

  • Designed for varying or poor water qualities
  • Suitable for high-risk applications such as hospitals, biotech and ultrapure water applications
  • 350 PP and SS Series approved for treatment of intake water for aquaculture by the Norwegian Veterinary Institute
  • Available with the same features and options as the standard 220 and 350 series



Third party validated UV system

Our MR16-350 SS VAL series is performance validated according to ÖNORM M 5873-1 and DVGW Worksheet W294-2.

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 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. The ACN Series is designed for low UVT.


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 Series MR1-220SS MR3-220SS MR4-220SS MR6-220SS MR8-220SS MR12-220SS MR16-220SS
Max. flow 38 m³/h 110 m³/h 150 m³/h 225 m³/h 340 m³/h 490 m³/h 620 m³/h
Lamp power 0.25 kW 0.75 kW 1.0 kW 1.5 kW 2.0 kW 3.0 kW 4.0 kW
Inlet/outlet dia. DN80 DN150 DN150 DN200 DN200 DN250 DN250


350 SS Series MR1-350SS MR3-350SS MR4-350SS MR6-350SS MR8-350SS MR12-350SS MR16-350SS
Max. flow 60 m³/h 260 m³/h 390 m³/h 600 m³/h 870 m³/h 1300 m³/h 1650 m³/h
Lamp power 0.4 kW 1.1 kW 1.5 kW 2.3 kW 3.0 kW 4.5 kW 6.0 kW
Inlet/outlet dia. DN100 DN150 DN150 DN200 DN250 DN300 DN300


440 SS Series MR1-440SS MR4-440SS MR6-440SS MR10-440SS MR14-440SS MR16-440SS
Max. flow 68 m³/h 330 m³/h 550 m³/h 1000 m³/h 1400 m³/h 1600 m³/h
Lamp power 0.5 kW 1.9 kW 2.9 kW 4.8 kW 6.7 kW 7.6 kW
Inlet/outlet dia. DN100 DN200 DN300 DN300 DN400 DN400

*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


NYSE Euronext, London, UK

Multiple MR75SS UV systems for disinfection of cooling water.

US Air Base, Kyrgyztan

Several Ultraaqua UV systems for sterilization of drinking water.

Hirtshals, Denmark

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

Belsvik, Norway

Two MR16-320SS VAL disinfecting lake water. Önorm and DWGW validated UV-systems.