TYPICAL HIGH PRESSURE AIR CYLINDER LABEL INFORMATION

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• High Pressure Air: Sometimes called Nitro tanks (nitrogen or air). Peak tank pressure is between 3000 psi and 5000 psi.  They can be steel, aluminum and aluminum/fiber wrapped.
   
• Fiber wrapped: These bottles usually need to be tested every 3 years.  The Newer ones may be tested every 5 years.   They have a 15 year life.
   
• Steel and Aluminum: Most Need to be tested every 5 years and have a unlimited life. However steel bottles that have 3HT stamped on them, should be tested at least every 3 years and have a life span of 24 years.
   
• CO2 tanks: 2 inches or less in diameter do not need to be tested. They usually have a 1800 psi limit. Greater than 2 inches in diameter or greater must be tested every 5 years. These bottles are not fiber wrapped. These are considered high pressure too. 
   

• Proper care of your cylinders includes impact prevention, never over fill beyond the certified pressure, inspect each time you fill and have a certified airsmith or hydro station to do a professional visual inspection inside and outside annually.  Always play safe.