Steel panel radiator with left bottom connection

RADIK VKL is a steel panel radiator in VENTIL KOMPAKT version which allows left bottom connection to a pressurized heating system. There are two upper and two lower hangers welded at the back of the radiator. Radiators in length 1800 mm and more have six hangers.

Technical Data

Height (H)300, 400, 500, 600, 700, 900 mm
Length (L)400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1400, 1600, 1800, 2000, 2300, 2600, 3000 mm
Depth (B)
- Typ 10 VKL47 mm
- Typ 11 VKL63 mm
- Typ 21 VKL66 mm
- Typ 22 VKL100 mm
- Typ 33 VKL155 mm
Connecting pitch50 mm
Connecting thread6 x G½ inside
Highest allowed working pressure10 bar
Highest allowed working temperature (°C)110 °C
Radiator connectionleft bottom
Pressure Loss

In case of two-pipe heating system it is necessary to calculate the correct level of valve presetting and specify this in the project documentation to ensure a proper function of the heating system. This must be kept by the installer during installation of the heating system.

Heat output [W]



  • t1 - input water temperature
  • t2 - output water temperature
  • ti - desired room temperature

For the conversion of heat outputs change the default values.

Heat output calculated to ∆T= 50; (t1/t2/ti = for 75/65/20 °C)

Length [mm]

Types of Connection

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