Assertion: pilot light's flame | /r/HasProperty | extinguished
Facets:
Source sentences:
text: For gas appliances, a flame supervision device (FSD) – alternative name: flame failure device (FFD) – is a general term for any device designed to stop flammable gas going to the burner of a gas appliance if the flame is extinguished.
text: The H17 Series valves provide complete shutoff in the event that the flame heating the thermocouple is extinguished.