Thread: All about gas stoves.

Part 3 - Inverted liquid feed canister stoves.

So how do we get around those issues of evaporative cooling and our gas mix changing for the worse that we saw with the upright canister stoves? We invert the canister.
Now there is no evaporation happening inside the canister, we are drawing liquid gas off to our stove and because of that we have no internal cooling of the liquid reducing our pressure and we are drawing off the gas at the same mixture ratio for the whole canister. Win!

But( there's always a but) we need a special type of stove to do this. We need a stove that has a way of changing our liquid to a vapour before it reaches the burner. Take a look at the stove below. Notice what the green arrow is pointing to. It's a preheat loop. With this type of stove we start the stove with the canister in the upright position and run it for 30 seconds to warm up that preheat loop then we can invert the canister to liquid feed mode and the liquid will travel down the hose and hit that hot loop. When it reaches that hot loop it will evaporate and we have gas vapor for our burner.
The other advantage of this type of stove is it can be used down to much lower temperatures. When we use it in the upright canister position our valve at the canister controls the volume of fuel which is vapour. When we invert the canister and feed liquid our valve still controls the volume of fuel but the mass of our fuel has greatly increased. In short, (and I want to keep it kinda short) we can continue to get good output in liquid feed mode with very low canister pressure because of this.



Always consult a manual to see if your stove is capable of being used in liquid feed mode. Just because it has a preheat loop does not also necessarily mean it's good to use with a canister.