Firexo actively advise against a non-qualified person attempting to service their own extinguishers. There are many parts to a fire extinguisher other than the vessel itself, such as the pressure gauge, Valve handle, hose, nozzle, dip tube etc. If, for example, a pressure gauge was faulty only a trained engineer could tell this with the equipment they carry. Firexo have a wide range of partners across the UK that can assist you here. To find out more Info on a provider near you, please visit https://firexo.com/distributor- finder/