Possible enum values
- Unknown
- Purchased
- Disposed
- Refilled
- CylinderRelease
- CircuitRelease
- Added
- Recovered
- Tested
- Transferred
- LeakIdentified
- LeakRepaired
- LeakTestFollow
- Created
- CircuitEdit
- Retired
- LeakTestInitial
- Adjusted
- CylinderEdit
- LeakInspected
- ALDCalibrated
- Retrofitted
- Activated
- ServicedOrLeakRepaired