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HL 106 Four-Way Mixing Valve Training Panel
Education / GUNT Hamburg / Thermal Engineering and HVAC / Heating and Ventilation in Buildings /

The trainer was designed for heating and plumbing trainees.

  The four-way mixing valve in a heating system controls the circulation and feed flow temperatures of the water flowing in the heating system and the boiler return flow temperature. It is possible to add the hot water required and to connect radiators. The differential pressure across the pipe system is limited using a relief valve. Bimetallic thermometers indicate relevant temperatures. 

Learning Objectives / Experiments

- Function and operating behaviour of a four-way

  mixing valve 
- Effect of the mixing ratio on feed and

  circulating flow temperature
- Effect of mixer setting on the flow rate

In conjunction with other trainers in the HL 100 series, it is possible to set-up a complete heating system.


[1] Trainer on heating systems and plumbing
[2] 4-way mixing valve DN 20
[3] Circulating pump
[4] 4 rotameters 
[5] 4 bimetallic dial thermometers 
[6] 2 heating water connections DN 15
[7] 2 water connections for boiler DN 15
[8] 1 differential pressure overflow valve
[9] Water connections made using quick-release couplings


Technical Data


- power consumption: 60W

- max. flow rate: 60L/min

- max. head: 4m

Four-way mixing valve 
- setting angle: 90°
- opening time: 2min

Measuring ranges

- flow rate: 3x 150...1600L/h, 1x 0...440L/h
- temperature: 0...100°C


Dimensions and Weight
l x w x h: 1650 x 200 x 1100 mm (panel)
Weight: approx. 45 kg (panel)
Required for Operation
230V, 50Hz, 1 phase
Hot water supply: 1500L/h, drain
Scope of Delivery
1 trainer 
1 manual
Order Details

065.10600  HL 106  Four-Way Mixing Valve Training Panel