Select Page

AirGap 120/5 frequency controlled


AirGap 120/5 back flow preventer category 5 type AB is type approved according to SS-EN 1717.  Has double pums for extra safety and redundancy. The installation is swift and simple. It can be placed on the floor or on the wall and uses a minimal amount of space.

Radonett AirGap 120/5 is delivered as a complete unit tested in the factory before delivery. Pre-mounted 3-phase pumps (internal), damped design solenoid valve, pressure impact absorbers, adjustment valve, adjusted electrical switch with frequency controlled operation of the two assembled pump. Internally assembled stainless-steel pump leads to a low sound level and protects the pump from the aggressive environment.

Suitable for installations when water is needed continous and fluctuating. For instance for  sewage treatment plants using  polymer make-up units such as Polymore, for drinking water for cattle or poultry and animals  and cooling water for pumps.


  • Working pressure: 120 l/min at 5 Bar
  • Max pressure out: 6 Bar
  • Max flow out: 240 l/min
  • Weight (empty): 73 kg
  • Height: 1 170 mm
  • Width: 670 mm
  • Depth: 330 mm
  • Volume: 118 l
  • Tank in acid-proof stain-less steel: EN 1.4404
  • Water in: Solenoid valve Bürkert 5282 NC R20, 3/4″, hammer damped
  • Water out: Adjustment valve pre-mounted R25, 1 1/4″ internal
  • Frequency controll:  Vacon
  • Alarm: Overflow and pump alarm
  • Dry running protection: yes
  • Pump (internal): 2 x 1,1 kW, (3-phase)
  • Balancing valve: yes
  • Pressure sensor: Danfoss
  • Power: 3 x 400 V
  • Rated current: 6,2 A
  • Installation: On the floor  or on the wall in premises with floor drain and non-freezing environment.

Product leaflet

Download PDF

Contact Radonett for more information and for installation manual

AirGap 120/5 Frekvensstyrd återströmningsskydd, brutet vatten, SS-EN 1717, airgap

Back flow preventers:

AirGap 75/5

AirGap 75/5

Back flow preventer category 5 type AB is fitted with double pumps for extra safety and redundancy!

read more