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I have a very old Lennox gas furnace and the regulator has stopped allowing gas in. It allows just enough for the pilot to stay lit, but when the unit calls for heat the pilot goes out.
I figured it shouldn't be too hard to replace a regulator, but apparently because of the age, I am having difficulty getting information on the old regulator. So I know what to replace it with.
All the regulator has inscribed on it is Thermac Co. and what appears to be a HM and T11-
Also stamped on it is 4-59.
I have typed all of this in various forms into google search but have had no luck.
Any chance someone here knows what this regulator could be replaced with?