Apply to be a TradeMaster!
Main product image of 10" WC Gas Valve, LP, 100112339
Magnifying glass
Hover image to zoom

10" WC Gas Valve, LP, 100112339

Brand:
AO Smith
SKU:
100112339
Rating:
(26)
Q&A:
(0)
10" WC Gas Valve, LP, 100112339
Magnifying glass
Hover image to zoom
$239.40 each
In Stock
In Stock
Get 12 Tue, Jul 7
Order by today, receive Tuesday
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days

Description

AO Smith 100112339 10" WC Gas Valve (LP)
A propane (LP) water heater gas valve used to control gas flow and temperature regulation on compatible units that specify this exact replacement part.

Key Features:
  • LP gas valve rated at 10" water column (WC)
  • Application listed: Heating
  • SupplyHouse lists this item as replacing: 100093978, WV8840B5077, 9007891005, 6911136

Compatibility & Applications:
  • Listed under AO Smith water heater parts (Gas Valves - Commercial)
  • Q&A repeatedly indicates gas valves are unit-specific; compatibility should be confirmed by the water heater model/serial and the manufacturer-specified part number
  • Q&A confirms it is an LP/propane valve and includes direct-replacement confirmation for WV8840B5077 in at least one case
  • Must only be used where the manufacturer specifies this exact part number: 100112339

Installation & Operation Notes:
  • Installation should be performed by a qualified service technician
  • Follow the water heater's service/installation manual for the correct removal/installation procedure and checkout
  • Reviews/Q&A note real-world service considerations such as difficulty removing an old valve from the tank on some installs (some users swap the internal circuit/control component instead of removing the entire valve body); follow the equipment documentation for the approved service method

Maintenance & Troubleshooting:
  • This part is commonly replaced when a water heater's gas valve/thermostat starts "acting up," causes inconsistent hot water, or won't operate correctly at normal settings
  • Reviews describe successful repairs where replacement restored normal firing and made the heater operate properly even on lower temperature settings
  • If problems persist after replacement, troubleshooting should continue per the water heater service manual (model/serial verification, correct fuel type, and correct replacement part selection)

User Reviews & Q&A Summary:
  • Common review themes: correct part received, fixed the problem, and restored reliable hot water; many mention straightforward installation when the old valve is removable
  • Repeated purchasing themes: easy to find the right replacement and fast shipping; several reviewers bought it specifically for older units
  • Recurring cautions: a few reviewers mention these valves can fail over time and that replacement is sometimes "only when necessary" due to cost/effort
  • Q&A themes: strong emphasis on confirming fit by model/serial; confirmed LP/propane use; confirmed direct replacement for WV8840B5077 in at least one case; and clarified it is not a universal cross-over for other brands

Specs

Application:

Heating

Contact

+
Help Face

Happy Independence Day!

Our Customer Support will be closed today in honor of Independence Day. We will be back tomorrow to answer your questions.
Call or text 888-757-4774
Special Hours
Closed Now
MondayThursday
8am7:45pm
Friday
9am7:45pm
SaturdaySunday
9am5:45pm


You May Also Need

Burner Assembly 18" #51, 100112352
SKU: 100112352
Lochinvar

Product Reviews

4.65 out of 26 reviews
96% would recommend this product
4.65
out of 26 Reviews
96% would recommend this product
WRITE A REVIEW
5 star
81%
4 star
12%
3 star
4%
2 star
0%
1 star
4%
WRITE A REVIEW

Most Liked Positive Review

Easy to Find the Right Part and Fast Shipping

Our water heater's gas valve started acting up and I went online to AO Smith to buy a replacement. I couldn't even find their own gas valve on their site, so I googled it and the first thing that popped up was SupplyHouse with the exact model. Bought it immediately and it was shipped within days. AO Smith even reimbursed me for the part!
VS

Most Liked Negative Review

Good to find the unit.

While I really wanted just the control board inside the controller, I was satisfied to buy the whole unit and just scavenge the control panel and try it in my existing unit, without having to go through the trouble of draining the tank and replacing the whole unit. Would be nice to have found it on Google easier. Supply House did not show under any of my searches.
Showing 1-10 of 26 reviews

Worked perfectly

.....the instructions were simple & concise....I had the part in & water tank fired in less than an hour....thank you!!
Teri
Agness, OR
1 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Part was correct. Fixed the issue

I could not get the old gas valve to come out of the tank. So I simply swapped the circuit card from the new to the old. Fixed the issue.
REJ
Texas
2 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Yes, I would. But not unless necessary.

Glad I was able to find the part I needed for an older AO Smith gas water heater. Works perfectly. Delivered as promised too. Thank you.
Steve
Gentry Arkansas
2 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Works great.

Extremely easy installation and works perfect. Thank you !
Riverside Camper
Abingdon, Va
2 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

I would buy this product again, from this company..

My 89 Year ol Mom 's hot water tank went out. Hubby found the problem, the igniter. Promptly went on line, found the SupplyHouse.com, ordered what we needed and received the part pronto. They really saved Mom from taking cold showers.. Thanks again guys...
Grateful Daughter
Arizona
2 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Much needed gas valve

Fast shipping for a very vital part. I would have given five stars, but these valves don't last very long before they fail.
Older plumber
West coast, CA
3 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Finally, a gas valve/thermostat that works!

When I purchased the water heater, it didn't work correctly and the manufacture sent me a new gas valve and it still didn't operate correctly! We would run out of hot water and I would have to go outside and turn up the thermostat to make the water heater turn on. Now works wonderfully even on the lowest setting!
We have hot water
Palo Cedro, CA
3 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Yes

All the parts were correct, and installed on water heater to working condition
Shell
Antelope Valley, California
3 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Great company overall~

We are a pretty big company with several gas station and supermarkets and are always need part for various equipment parts. This company as alot of parts we need, is Very responsive and parts are shipped quickly! Definity a reliable company to order from.
Zin
Austin TX
3 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?

Our replacement part arrived overnight

It arrived so quickly we were surprised. 'An easy order process with good notification and follow-up. We get the impression that it's a very well run company.
rii
Northern California
3 years ago
Verified Buyer Icon
Verified Buyer
Was this review helpful to you?
Free Shipping
On orders over $99
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Shipping Policy
Easy Returns
Returning items is as simple as 1-2-3
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.
Return Policy