Description
Number 9 Magnesium Anode Bag
Keep your underground propane tank safe from corrosion with the Number 9 Magnesium Anode Bag. This sacrificial anode is designed to protect buried steel propane tanks by attracting corrosive electrical currents away from the tank body, preventing rust and structural degradation over time.
Product Details
- #9 size magnesium anode suited for small to mid-size underground propane tanks
- Pre-packaged in permeable bag with proprietary backfill mixture
- High-purity magnesium delivers effective cathodic protection
- Easy installation alongside new or existing below ground propane tank
- Helps satisfy NFPA 58 corrosion protection requirements
- Recommended replacement interval: every 10-15 years or per corrosion survey results
How Cathodic Protection Works
When a steel propane tank is buried in soil, electrochemical reactions cause the metal to gradually corrode. A magnesium anode bag creates a galvanic cell where the magnesium (which is more chemically active than steel) corrodes preferentially. The anode sacrifices itself so your underground propane tank stays intact. It’s a proven, time-tested technology used on buried metal structures worldwide.
Sizing Your Anode
The #9 anode bag is appropriate for smaller underground propane tanks, typically in the 120 gallon to 500 gallon range, depending on soil conditions. Larger below ground propane tanks — such as 1000 gallon models — may require a #17 anode bag or multiple anodes for adequate coverage. If you’re unsure which size you need, our team can help you determine the right protection for your specific installation.
Fast Shipping from Propane Tank Traders
Order this Number 9 Magnesium Anode Bag for just $140, shipped to your door with our $350 flat rate delivery. Pair it with a new underground propane tank from our inventory for a complete installation package. At Propane Tank Traders, we carry everything you need for propane tank installation, protection, and maintenance.
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