Furnace gas valve

Boon Docker wrote:
Try this search.

yep. Already did that. Every single one of those leads said that it is either no longer available, back ordered, or something along those lines. The only one that said it was available was some auto dealer up in Canada that linked through Walmart.ca. I actually tried ordering there but said my address wasn’t valid…I took that to mean they weren’t shipping across the border.

deleted

I have the 8531-II and have some parts from a III in it. I can't keep the part numbers straight. I found this info:

"Note there are three versions of gas valves that are applicable to the models listed below. Prior to ordering, please compare the picture of the valve to your existing valve to ensure that you are ordering the correct gas valve. If you have a 31096 or 31097 gas valve, you must order the 31155 and transfer the fitting, coil harness and the gas manifold from the old unit."

from:

https://pantherrvproducts.com/31098/

I have a photo of either the II or III's with some other parts-burnt out burners etc. That shows how the gas valve is in a II or III (same). Not sure what is meant by "side" in the OP

BFL13 wrote:
I have the 8531-II and have some parts from a III in it. I can't keep the part numbers straight. I found this info:

"Note there are three versions of gas valves that are applicable to the models listed below. Prior to ordering, please compare the picture of the valve to your existing valve to ensure that you are ordering the correct gas valve. If you have a 31096 or 31097 gas valve, you must order the 31155 and transfer the fitting, coil harness and the gas manifold from the old unit."

from:

https://pantherrvproducts.com/31098/

I have a photo of either the II or III's with some other parts-burnt out burners etc. That shows how the gas valve is in a II or III (same). Not sure what is meant by "side" in the OP

What I mean by “side” is…if I assume the gas outlet feeding the burner is the “front” of the valve, then the gas inlet is on the rear of the valve feeding straight through. However, mine also has a 90 degree fitting and then a short “S” fitting at the inlet so that the gas line actually enters the furnace box from the side. The replacement gas valve shown in your Panther link is the one I was looking at with the inlet on the side where my gas line enters the furnace box without the two fittings I mentioned. It looks like it should work but I figured I’d ask before I blew anything up.

In the photo of mine it shows the inlet down low on the "side" that connects to the gas line from the propane tank. Inlet is pointing to the right when looking at the furnace from outside the rig where the control board is on the far left.

The burner on mine is turned 90 degrees the other way from the panther link's diagrams (three versions in their third photo). I suppose you can just turn that as needed.

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

Not clear on above parts shown, but mine all goes with this piece where you screw the sparkers on so they are "above" the burner screen (but they are both "sideways" in the furnace)

I see mine has a way bigger hole in it for the fan. There is something different in the way the gas pipe bends around at the plate that screws on there where the burner goes on the other side in the other version too-mine is straight.

I have no slack in the inlet gas line from the propane tank, so the inlet on the part has to be just right there. If it were farther away a bit like the panther one might be (hard to tell) it would not work for me. If you have some slack, or room to run an extra piece of gas line over to it, that would be good.

Here are three photos of what goes in an 8531-II or III. It appears the gas valve is part of this assembly. 25M16V Type 701 is marked on it as shown.

JBarca wrote:

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

For the 31150, the gas outlet is in the wrong place. In your 2nd photo, the gas outlet is on the far side. On the 31155, the gas outlet would be to the right where your finger tips are, which is how mine is. Once mine is mounted in the furnace, the solenoids sit upright and the gas flows straight through from back to front. I suppose I might be able to rotate a 31150 and mount it sideways and use some fittings to get the gas line to the inlet port, which would face down, which is how it looks like yours is mounted. But I don’t have that L-shaped tube between the valve and the burner that is shown in your last photo.

Do you know if those caps with the allen head screws are removable? If so, could I swap the outlet from the side to the front?