Thermal Vacuum Valve: Testing and Inspection

Fig. 40 Testing Water Thermo Valve.:

1. Remove the water thermo valve.
2. Immerse the water thermo valve in a container filled with water Fig. 40.
3. Heat up the water gradually and observe the temperature.
4. Blow through the valve from the vacuum hose and if air comes out of the other hose at 55°C (131°F) minimum, the valve is operating properly.