... 10Mpa not need heating, pressuring GTM-D Fire extinguisher CO2 filling machine 1. GTM-D Fire extinguisher carbon dioxide ... efficiency, etc.4. GTM-D is the common type of CO2 filling machine for fire extinguisher. Good appearance, good performance, ... production and maintenance factories.Parameters:For filling MT2-MT7 portable CO2 fire extinguisherFilling pressure: 3 to 10MpaEnvironment temperature: 5°C ...