What to know when buying a gas valve
Gas valves are highly specialized devices that are adjusted to meet specific needs in the models that they service. A lot of gas valves look very similar, but are not interchangeable. That's why we put together a guide to help you find the valve you need before you make a purchase.
SERVICE NOTE: Gas fireplaces and other hearth appliances should only be serviced, repaired, or installed by trained professionals.
Top things to look for when replacing your SIT gas valve:
1. Model Number
The easiest way to order the right valve is to look at the model number on the valve itself. You can then use that number to find the exact replacement part online. These numbers must match exactly.
If you cannot see the model number on the gas valve, you could find the model number of the fireplace instead, and then look up the fireplace on allpartsinc.com.
We have a guide for identifying your fireplace model number as well.
2. Gas Type
The gas type of your new valve must match up with the gas type listed on the old valve.
3. Fireplace Vent Type
The vent type of your fireplace determines what kind of gas valve and pilot you can use.
There are three types of fireplaces: Vented, Vent-free and B-vent. Vented and B-Vent fireplaces use the same gas components, while Vent-free uses separate components. This can make it easy to identify what type of valve to get: simply look at your installed pilot assembly.
A vented gas valve will not work with a vent-free pilot because they have different thermocouple connection sizes. This is one of the biggest problems people encounter when installing a new gas valve.
Thermocouple Connection Sizes:
- Vented Gas Valves: 11/32 ASA-DNC
- Vent-Free Gas Valves: M8x1
