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HL 105 Three-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.

  A three-way mixing valve in a heating system controls the circulation and feed flow temperature of the water flowing in the heating system. A pump circulates the water in the pipe system. The differential pressure across the pipe system is limited using a relief valve. Bimetallic thermometers indicate the temperatures at all relevant points in the heating circuit.

Learning Objectives / Experiments

- Function and operating behaviour of a three-way

  mixing valve
- Effect of mixing ratio on feed flow or circulating

  flow temperature
- Effect of mixer setting on the flow rate

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

[1] Trainer on heating systems and plumbing
[2] 3-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

Three-way mixing valve 
- setting angle: 120°
- 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

065.10500  HL 105  Three-Way Mixing Valve Training Panel