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.
* Trainer on heating systems and plumbing1
* Function of a four-way mixing valve1 * In conjunction with other trainers in the HL 100
series, the set-up of a complete heating system is