Silver gas cartridge converter adapter for cartridge gas stoves, interchangeable filling valve for camping and outdoor activities

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