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I found this in one of my crawl spaces mixed in with a pile of galvanized pipe and the big inserts that came from a converted coal boiler I assume. You know, the big iron ones that slide into the large passages.
Anyway, it appears to say Rich Fin and 30 gallons. There is some number before that but I can't make it out.
Does anyone know what this is?
Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment