How to use the Gallo Gun CO2 Drain Opener? @1NuCalgon

Nu-Calgon 4179-01 (1 Pack) Gallo Gun-Clears Condensate Drain Lines
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Nu-Calgon 4179-16 Includes (12)-16g Mag 16 CO2 Cartridges, Piece
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Nu-Calgon 4179-20 Includes (12)-20g Mag 20 CO2 Cartridges, Piece
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Nu-Calgon Website
https://www.nucalgon.com/

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