According to the pharmacy filling technical requirements of controlled fire extinguishers of self-propelled artillery, a "time-controlled continuous filling" filling method was proposed, problem of the extinguishing agent mixed with the air filled with ice clogging pipes media is solved, and two extinguishing agent pressurized filling and optimal timing nitrided cast/cutting process control are implemented. After the trial, controllable fire extinguishers filled with equipment with comprehensive, secure, reliable, good stability, can greatly reduce the cost of equipment maintenance.
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