Furnace gas valve

Bob E. wrote:
My furnace is an older hydro flame 8531-II. the gas valve is not functioning so I was going to order a new one. But it appears that part number 31155 is no longer available. Does anyone know if the gas valves are more or less the same? I found one that looks similar except the propane inlet fitting is on the side rather than the back. Mine actually has a couple of fittings that connect to the propane line in the side. So I’m wondering if this alternate part would work.

Hi,

I'm not sure where you found the Atwood 31155 aligns to the Atwood 8531-II.

From the 2015 service manual, they call out 38607 for the 8531-II. And and the 38607 is now obsolete and I found the trail that 31150 is what replaces it. The 2015 manual says the 31155 fits the 85XX-LD furnace.

I have bought and installed 2 of the 31150 this year with the last installed one in October. And ordered 2 more for stock last week.

See if this will work on your setup. Pics below.

The 31150 looks like this




A bench leak test on the new one before I intall.


The is the old one leaking, but a pic of the orfice tube you have to move from the old to the new.


Duct tape is over the gas line brass fitting for the inlet


If the 31150 is what you are looking for, here are 2 places I have bought from with positive outcomes.
https://pantherrvproducts.com/31150/?gclid=Cj0KCQiAy4eNBhCaARIsAFDVtI1_GmJlz19kVMwZV8JZAGXS8hQVNCG9EVyOTf7f5OvMM7AB7R9DGBQaAgTUEALw_wcB

https://www.rvupgradestore.com/Atwood-31150-Gas-Valve-For-Hydro-Flame-Furnaces-p/41-0100.htm?gclid=Cj0KCQiAy4eNBhCaARIsAFDVtI2PeuzQvWTDtv2skPmkGa3H-iGMLDHKaOknuwlIIxH2F8TdSitIP1saAq7OEALw_wcB

https://www.dyersonline.com/atwood-38604-furnace-hydro-flame-side-out-gas-valve.html

Hope this helps

John