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Products  |  Thermal Engineering and HVAC  |  Heating and Ventilation in Buildings  |  HL 105
HL 105 Three-Way Mixing Valve Training Panel Show data sheet (pdf file) Print page
Technical Description

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.


* Trainer on heating systems and plumbing1
* Function of a three-way mixing valve1
* In conjunction with other trainers in the HL 100

  series, the set-up of a complete heating system is


Available accessories
HL 112 -- Radiator Training Panel
HL 305 -- Hydronic Balancing of Radiators
Alternative products
HL 106 -- Four-Way Mixing Valve Training Panel
HL 108 -- Domestic Heating Circuit Training Panel
HL 620 -- Domestic Heating System Control Training Panel
[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...100C


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

© 2005 G.U.N.T. Gerätebau GmbH