US Patent 8967208 Secured system for fire suppression refill and recovery

A secured system for fire suppression refill and recovery and a method for using such system. Operation of the system involves the refilling of an extinguisher tank with matter from a storage tank, the recovery of matter from an extinguisher tank to a storage tank, the cleansing of matter within a tank, and the purging of matter from a tank. The system includes a secure recovery unit, secure tank units, and equipment for connecting the recovery unit to the tank units. The system is configured such that, during its operation, safety and security risks commonly associated with the transfer of matter to and from extinguisher tanks are greatly reduced.