Filler Valve Lock & Key

This patent-pending lock, with a unique registered key code, blocks the outlet valve of a propane tank, effectively preventing the release of propane gas from the tank. The key-operated plug lock serves as a valve block for retail or larger residential and industrial tank valves. Residential and industrial tanks can be “locked-up” for non-payment or to protect against unauthorized access. Re-usable retail tanks, which may be behind a barrier or locked inside a caged enclosure, are easy pickings if the fence or cage door is breached.