sun valve (solar-powered gas valve)
E1751754
UNEXPLORED
The sun valve is an automatic, solar-powered gas control device that regulates the operation of gas-lit lighthouses by turning the gas flow on at dusk and off at dawn.
All labels observed (1)
| Label | Occurrences |
|---|---|
| sun valve (solar-powered gas valve) canonical | 1 |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Dalén