Zinc Anode Header Plugs (Sacrificial Anodes)
Reduce Corrision and Prevent Equipment Damage with Sacrificial Zinc Anodes
- Prevent damage from galvanic corrosion
- Available from 1" to 14"
- Replaceable zinc anode
- Soft rubber material conforms to provide a tight seal
- In-stock items ship within 24 hours
For use in heat exchangers, pumps, tanks, pipelines and engines
Because heat exchangers are typically a copper alloy, they are at risk of galvanic corrosion. To combat this, many heat exchangers are fitted with a Zinc Anode Header Plug, also called a "pencil anode," or a "sacrficial anode." You will find it (or not) under a plug in the exchanger. The Zinc Anode Header Plug is easily replaced by unscrewing the old sacrificial anode from the plug.
Frequently Asked Questions
We are a full machine shop, and we're capable of customizing your anode plug to your exact spec. Please contact us with your project details, and we'll be happy to assist you.
The NPT on our anodes are made of brass.
Seawater, and other kinds of water, can create an electrical current between two metals that results in corrosion. By introducing a third metal that 'sacrifices' itself before the other metals start to corrode, you have an easily replaceable part that prevents corrosion on your equipment.
We suggest you check your anodes every 6-12 months.
Absolutely. We're happy to sell you just the anode, please contact us with the size of rod you need, and the dimensions on your existing plug.
Heat exchangers, pumps, tanks, pipelines and engines are all common equipment that have anode plugs built in. Boats and other equipment that are regularly subjected to seawater have a higher chance of corrosion and may benefit from a zinc anode plug.