
Hydrun Degasser is a fully automatic vacuum degasser that continuously takes in system water in a partial flow, removes gases from the fluid, and returns the degassed water to the system.
This keeps the entire system free from air, microbubbles, and dissolved gases, which improves energy efficiency, operational reliability, and service life.
Clear connection logic and preset values reduce time on site.
Modbus TCP, RTU, and BACnet for alarms, status, and logging directly to the BMS/DDC as standard.
Removes dissolved gases and microbubbles, reducing corrosion, cavitation, and wear in the system.
Proven, service-friendly components from Grundfos, Danfoss, and Schneider Electric.
Function and performance verified in independent tests by the Research Institutes of Sweden.
Swedish manufacturing with traceable quality, short lead times, and prompt access to spare parts.


Right side of the HY-D with Autofill (optional) and inlet.

Left side of the HY-D with outlet and power cord.

Hydrun Degasser is delivered ready for installation in a box.

Download the technical drawing to assist with installation.
Model
HY-D-25
Previous name: O2-X 25
Previous article no.: HL1121
RSK number: 503 40 14
Operating pressure: 0.8 – 2.5 bar
Pressure class: 10 bar
Working temperature: 0-70°C
Fluid treated: 500 l/h
Voltage: 230V 1-phase
Fuse: 10 A
Power: 0.75 kW
Communication: Modbus TCP, RTU and BACnet
Media: Glykol <50%, Etanol <29%
Connections: DN15
Dimensions: D:250 x W:500 x H:750 mm
Weight: 25.7 kg
Model
HY-D-25-AF (Autofill)
Previous name: O2-X 25 A
Previous article no.: HL1120
RSK number: 503 40 15
Operating pressure: 0.8 – 2.5 bar
Pressure class: 10 bar
Working temperature: 0-70°C
Fluid treated: 500 l/h
Voltage: 230V 1-phase
Fuse: 10 A
Power: 0.75 kW
Communication: Modbus TCP, RTU and BACnet
Media: Glykol <50%, Etanol <29%
Connections: DN15
Dimensions: D:250 x W:500 x H:750 mm
Weight: 25.7 kg
Model
HY-D-40
Previous name: O2-X 40
Previous article no.: HL1101
RSK number: 442 63 68
Operating pressure: 0.8-4.0 bar
Pressure class: 10 bar
Working temperature: 0-70°C
Fluid treated: 500 l/h
Voltage: 230V 1-phase
Fuse: 10 A
Power: 0.75 kW
Communication: Modbus TCP, RTU and BACnet
Media: Glykol <50%, Etanol <29%
Connections: DN15
Dimensions: D:250 x W:500 x H:750 mm
Weight: 30.6 kg
Model
HY-D-40-AF (Autofill)
Previous name: O2-X 40 A
Previous article no.: HL1100
RSK number: 503 40 16
Operating pressure: 0.8-4.0 bar
Pressure class: 10 bar
Working temperature: 0-70°C
Fluid treated: 500 l/h
Voltage: 230V 1-phase
Fuse: 10 A
Power: 0.75 kW
Communication: Modbus TCP, RTU and BACnet
Media: Glykol <50%, Etanol <29%
Connections: DN15
Dimensions: D:250 x W:500 x H:750 mm
Weight: 30.6 kg
Model
HY-D-60
Previous name: O2-X 60
Previous article no.: HL1126
RSK number: 503 40 22
Operating pressure: 3.0–6.0 bar
Pressure class: 10 bar
Working temperature: 0-70°C
Fluid treated: 450 l/h
Voltage: 230V 1-phase
Fuse: 10 A
Power: 0.75 kW
Communication: Modbus TCP, RTU and BACnet
Media: Glykol <50%, Etanol <29%
Connections: DN15
Dimensions: D:250 x W:500 x H:750 mm
Weight: 34.7 kg
Model
HY-D-60-AF (Autofill)
Previous name: O2-X 60 A
Previous article no.: HL1125
RSK number: 503 40 21
Operating pressure: 3.0–6.0 bar
Pressure class: 10 bar
Working temperature: 0-70°C
Fluid treated: 450 l/h
Voltage: 230V 1-phase
Fuse: 10 A
Power: 0.75 kW
Communication: Modbus TCP, RTU and BACnet
Media: Glykol <50%, Etanol <29%
Connections: DN15
Dimensions: D:250 x W:500 x H:750 mm
Weight: 34.7 kg