Why is there an allen wrench in my FPK charging kit?

​The allen wrench should be used to initially break the gas valve seal prior to installing the FPK charging unit. DO NOT USE THE CHARGING UNIT ITSELF TO BREAK THE SEAL AS INTERNAL COMPONENTS WILL BREAK REQUIRING COMPLETE REPLACEMENT OF THE FPK. Please consult the ''Maintenance'' section of Charging & Gauging Kits on the HYDAC website

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