Steel panel radiator with bottom middle connection

The conception of RADIK VKM-U is based on the VENTIL KOMPAKT design. They are fitted with built-in inside distribution tappings and a regulation valve. These radiators are primarily designed for bottom middle connection with the regulation valve on the right. There are no hangers welded to the back side and thus it is possible to turn the radiator, in that case the regulation valve will be on the left.

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 21 VKM-U66 mm
- Typ 22 VKM-U100 mm
- Typ 33 VKM-U155 mm
Connecting pitch50 mm
Connecting thread6 × G½ inside
Highest allowed working pressure10 bar
Highest allowed working temperature (°C)110 °C
Radiator connectionmiddle 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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