Well, you might want to watch this video of how to make a mini butane torch out of some ... air through the syringe, and gas through the bicycle pump nozzle, with a bit of pressure adjustment ...

Refilling fuel in your torch or lighter may not ... and check for proper butane flow by making sure the nozzle from the pump butane canister is fully engaged during refilling.

Fuel is provided by a butane canister with a nozzle that needs to be pressed to release the gas. A servo is used to push the canister into a 3D printed housing, releasing the gas into a pipe to ...