✅ SOLVED Gas light key maybe ?

[Bruce R]

The square hole is 3/8 x 3/8 in. Cast iron.View attachment 1311378View attachment 1311379

 

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[osage express]

http://thumbs3.ebaystatic.com/d/l225/pict/321772073396_1.jpg I hope this link works.They are calling it a Radiator or gas key.Hope this helps

 

[ARC]

Fireplace gas valve key.

 

[ARC]

Vintage Fireplace Gas Valve Keys | eBay

 

[tamrock]

Vintage Fireplace Gas Valve Keys | eBay

"Solved" with a perfect reference example. A non specific gas valve key for a device that runs on gas. That ends this one.

 

[Bruce R]

Cool, thanks. That was quick , I'll get er marked solved. I had been told gaslight key, but I've seen a lot of gaslight fixtures and none took a key. The fireplace burner makes more sense.