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Old 11-18-2010, 11:04 AM   #1
2 Rivet Member
1994 30' Excella
Napanee , Ontario
Join Date: Oct 2007
Posts: 58
furnace gas valve

Hello, Can anyone assist? The burner on the furnace of our 94 Excella is being replaced. It has been discovered as well, that the furnace also must have its gas valve replaced as the gas mixture is "too rich." Unfortunately the dealer is not able to obtain this valve and suggests that the solution is to purchase a new furnace. ie. $2000+
Does anyone have or know where I could look to purchase a used valve part for the furnace? I am waiting to receive the proper name and number for this part.

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Old 11-18-2010, 11:30 AM   #2
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2010 30' Classic
Vintage Kin Owner
South of the river , Minnesota
Join Date: Dec 2009
Posts: 3,794
The gas valve ordinarily would not affect the richness of the mixture. That is determined by relative sizes of the orifice and venturi and the setting of the air shutter.

Should you need to replace the furnace you should be able to obtain one for much less than $2000.

Suburban SF Furnace - Heater at the Suburban SF Furnace Catalog

Depending on the model of your existing furnace it may be necessary for the installer to build a new base for it and make other adjustments. Even so, a technician familiar with Airstreams should be able to do it in no more than 4 hours.

I would not install a used valve. If the gas valve has indeed failed, I would imagine that new gas valves should in fact still be available. Parts diagrams, lists, and prices for most furnaces of recent manufacture are available here:

Suburban Furnace Parts for Sale - Atwood, Duo Therm
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