Thermostat: Testing and Inspection

THERMO VALVE CHECK





1. Obtain a container filled with water and place the thermo valve in it with a stick [approximately 6 mm (0.24 inch) in diameter] inserted. Gradually warm up the water while stirring, and check that the thermo valve opening temperature is within the standard value. The stick rises when the thermo valve opens.
Standard value:
75± 1.5°C (167± 2.7°F)
2. Warm up the water to the full-open temperature of the thermo valve, and check that the valve lift amount is within the standard value.

Standard value:
Full-open temperature 95°C (203°F) or more
Valve lift amount when it is fully opened:
3 mm (0.12 inch) or more
NOTE:
Measure the height of the fully closed valve in advance, and then measure the valve height at fully open temperature to calculate the lift amount.