Design radiators with horizontally aligned profiles, bottom middle connection, built-in distribution pipeline and an inserted valve

KORATHERM HORIZONTAL VKM is the latest model which extends the product range of design radiators. The bottom middle connection and regulation valve which are delivered as standard enhance the efficiency of this radiator in all modern heating systems.

It is designed for double-pipe pressurized heating systems, the heating profiles are horizontally aligned. The connection to the heating system is always bottom middle with the connecting pitch 50 mm. This model is equipped with a built-in distribution pipeline and an inserted valve.

It is equipped with 2 bottom connections with inside thread G½, an air vent and a blanking plug with G¼ thread. The types 11, 20, 21 and 22 are delivered with a top grill.

KORADO now offers also towel hangers and pegs which extend the practical use of KORATHERM design radiators.

Technical Data

Height (H)218, 366, 514, 588, 662, 884 mm
Length (L)500, 600, 700, 800, 900, 1000, 1100, 1200, 1400, 1600, 1800, 2000 mm
Depth (B)62, 74, 117 mm
Connecting pitchh = 50 mm
Connecting thread2 x G½ inside
Highest allowed working pressure4 bar
Test pressure5.2 bar
Highest allowed working temperature (°C)110 °C
Pressure Loss

When using design radiators in the version KORATHERM HORIZONTAL VKM it is necessary to calculate the correct level of valve presetting (pdf, 70 kB) and specify this in the project documentation to ensure a proper function of the heating system. This must be kept by the plumber 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

Overview of Types

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