Copper-silver natural gas injection switch, gas outlet nozzle, all-copper flamethrower nozzle

From portable gas stoves with 3 valves, called tripod stoves or paella burners, to camping stoves with double burners - the main features to look for in camping stoves are their efficiency, number of burners, stability, type of fuel used (butane, propane, LPG), and whether this is bottled or in canisters