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HL 107 Circulating Pumps Training Panel
Education / GUNT Hamburg / Thermal Engineering and HVAC / Heating and Ventilation in Buildings /

The trainer contains a pipe system with two circulating pumps. It is possible to switch between series and parallel operation using ball valves.

  Two rotameters with different measuring ranges are provided for the measurement of the flow rate. Manometers indicate the pressure at all relevant points in the system. The temperature can be read on a bimetallic thermometer.

  The trainer has a closed water circuit with expansion vessel and is thus independent of the water mains.

Learning Objectives / Experiments

- Pump characteristics at varying speeds
- Determination of pipework characteristics
  and operating points
- Series operation of circulating pumps
- Parallel operation of circulating pumps
- Comparison of experiment and calculation


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

[1] Series and parallel operation of 2 pumps
[2] Training panel can be changed to various operating modes using ball valves
[3] 2 rotameters
[4] Pressure measurement with 6 Bourdon tube manometers
[5] 1 bimetallic dial thermometer 
[6] Water connections made using quick-release couplings
Technical Data

2 pumps

- power consumption: 70W

- max. flow rate: 60L/min

- max. head: 4m

Measuring ranges
- flow rate 1x 150...1600L/h / 1x 400...4000L/h
- temperature: 0...60°C
- pressure: 0...2.5bar


Dimensions and Weight
l x w x h: 1650 x 200 x 1100 mm (panel)
Weight: approx. 58 kg (panel)
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phasse
Scope of Delivery

1 trainer

1 manual

Order Details

065.10700  HL 107  Circulating Pumps Training Panel