Sacrificial
Zinc Anodes

Reduce Corrision and

Prevent
Equipment
Damage

See how fast we can deliver!

Plug Sizing Chart

Zinc Plug Features

How Zinc Anodes Work

Installing Tube Plugs?

Zinc Corrosion Plug Specifications

Size NPT (in.)	Rod Diameter (in.)	Rod Length (in.)	Part No.
1/4	1/4	1	AP-0250-1
1/4	1/4	2	AP-0250-2
1/4	1/4	3	AP-0250-3
1/4	1/4	6	AP-0250-6
3/8	3/8	2	AP-0375-2
3/8	3/8	3	AP-0375-3
3/8	3/8	6	AP-0375-6
1/2	1/2	3	AP-0500-3
1/2	1/2	6	AP-0500-6
1/2	1/2	8	AP-0500-8
3/4	3/4	4	AP-0750-4
3/4	3/4	6	AP-0750-6
3/4	3/4	8	AP-0750-8
1	1	4	AP-1000-4
1	1	6	AP-1000-6
1	1	1	AP-1000-10
1	1	14	AP-1000-14

ZINC ANODE/ BOAT ZINC PRODUCT FEATURES:

Prevent damage from galvanic corrosion
Rod lengths available from 1" to 14"
Rod diameters available from 1/4" to 1"*
Replaceable zinc anode
Soft rubber material conforms to provide a tight seal
In-stock items ship within 24 hours

For sizes larger than 1" NPT, use 1" parts and install a reducing bushing

For use in heat exchangers, pumps, tanks, pipelines and engines

Other Names/Uses

Boat Pencil Zincs, Pencil Anodes, Engine Anodes, Marine Zincs, Zinc Engine Anodes, Pencil Zinc Engine Anodes, Galvanic Corrosion Anodes, Galvanic Sacrificial Anodes

HOW ZINC ANODES WORK:

Heat exchangers, often made of copper alloy, are prone to galvanic corrosion. Zinc Anode Header Plugs are commonly installed in them to prevent this. These plugs can be found in the exchanger and are easily replaceable. It's advisable to check internal anodes annually if your equipment has them.

Sacrificial anodes work by preventing galvanic corrosion. When two different metals are connected and exposed to seawater, they generate electrical current, leading to corrosion. To counter this, a third metal, faster to corrode than the other two, is introduced to the circuit, sacrificing itself to protect the other metals.

Replacement anodes are available separately, eliminating the need to buy the entire plug assembly.