When you turn on a gas oven, you cannot see if the gas is ignited unless you have the oven open to look at the flame bar. This is not a safe practice because if the flame does not ignite immediately, there can be an explosion once it does catch and reaches the gas that has accumulated. However, to prevent this from happening, there is a gas safety valve that keeps the gas from being released until there is ignition from the pilot light. Anytime your oven has a small explosion inside when you turn it on, you need to replace the safety valve. Be sure to buy the same type of valve the oven has already to ensure your safety.
This valve includes the thermocouple. If the thermocouple needs to be replaced, you will have to replace the valve piece as well. It has a ½ inch circular red button underneath the valve. It comes with either both "in and out" holes at the top, or with an "out only" hole. When you take off the defective valve, if you have to unscrew two tubes from it, you have an "in and out" model. The "out only" model is only connected by one tube.
The BASO valve does not come with a thermocouple. If you need to replace that as well, you will need to buy two separate parts. It comes in different designs for different models so knowing the make and model of your oven is important when buying this valve. It also comes with either "in and out" or "out only" connections. To determine if it is a FMDA or BASO valve, look at the pilot button. This valve has a larger button, measuring 15/16 inch.
It is very rare that you will have to replace a TS valve because it can be rebuilt. Unless the piece has physical damage to it, you can purchase a rebuild kit to repair it. It is available with both "in and out" or "out only" connections. The best way to determine if you have a TS valve is the 5/8 inch pilot button and that it comes without the thermocouple attached to it.
In addition to allowing gas to flow freely into your oven, a defective safety valve can also prevent any gas from releasing. If your oven will not ignite at all, or ignites and then the gas shuts off, it could be a faulty valve. Go ahead and replace it. If that does not fix the problem, you should call in a technician to figure out what is wrong.
To learn more about garland stove parts, contact a company like K & D Factory Service IncShare