I have some jet lighters in my shop. I’m not a smoker but they are useful for other things too. My problem is that they seem to not work at all?
When I buy them they are fine, push the button, clear “click” sound and a fine hot jet of fire. After a while though, they simply won’t fire anymore, even though the little window shows that there’s plenty of gas inside.
Are these also using the normal propane/butane as regular lighters?
The gas stays liquid over a wide range of pressures - you wouldnt see any difference visually. On the higher pressure side, the gas comes out at higher pressure and therefore more mass is ejected per unit time. At lower pressure the gas comes out, sure, but perhaps not fast enough to give that jet effect.