Aluminum Tank & Condenser Anodes by Farwest Corrosion

Sacrificial Anodes for a Variety of Internal C.P. Needs


Aluminum anodes have long been used in the fight against corrosion. In the oil and gas industry, aluminum anodes are widely used to protect against corrosion in a wide variety of steel structures such as oil-water separators, condensers, tanks and any other vessel where produced water is stored.  Common installation methods include welding or bolting the anodes directly to the structure that is to be protected.
ALOLINE aluminum anodes are designed for optimum performance under a variety of environmental conditions and temperature ranges. Cast in different sizes and weights, ALOLINE anodes provide maximum performance in seawater and brackish environments.

Typical Chemical Composition

Element Percentage
Indium (In)
Zinc (Zn)
Silicon (Si)
Copper (Cu)
Iron (Fe)
Cadmium (Cd)
Others, each
Others, total
0.016 to 0.02%
4.75 to 5.75%
0.08 to 0.12%
0.003% Maximum
0.12% Maximum
0.002% Maximum
0.02% Maximum
0.05% Maximum


Performance Characteristics

Anode Capacity
Potential (Calomel)
Consumption Rate
1150 amp hours per pound (Minimum)
1.080 volts (Minimum)
7.6 pounds per amp year

Available Sizes

Aluminum anodes are available in many different shapes, weights, and core configurations. While many of these configurations are listed in the following charts, many more anodes are available but not shown.  

For assistance selecting the appropriate anode, contact a Farwest customer service representative for assistance.


Installation Instructions for Condenser Anode with Mounting Kit

Dimensions (in) Core Type Weight (lbs)
Aluminum Gross
C-13 8" x 8" x 2" 3/4" Pipe 12.5 12.7
C-26 8" x 8" x 4" 3/4" Pipe 23 23.2
C-13C 8" x 8" x 2" 3/4" NPT Coupling 12.5 12.7
C-26C 8" x 8" x 4" 3/4" NPT Coupling 23 23.2
C-2R5A 5" diameter x 2" 3/4" Pipe 3.5 3.7


9.8" Dia. Sphere Aluminum Anode



1. The surface to which the anode is to be attached should be cleaned of scale and rust by chipping and wire brushing before the anode and/or mounting kit is to be installed. This is important to insure a good seating surface for the anode.
2. When installing to a steel surface, fillet weld the tapered end of the #304 stainless steel stud with a 1/8” diameter #310 stainless steel electrode at 70-105 amps. The stud must be held perpendicular to the steel surface and a neat weld should be made without building up an excessive reinforcement, otherwise the anode will not seat squarely against the surface to be protected.
3. After the stud has cooled, place the 1/16” x 10” x 10” rubber sheet over the stud and lay flat against the steel structures surface. Do not tear or enlarge the stud hole in the rubber sheet.
4. If using a “resistance washer” in the installation, slide the rubber insulating tube over the anode stud until it comes in contact with the rubber sheet installed per item 3 above. If you’re not using a resistance washer in the installation, do not install the rubber insulating tube.
5. Apply enough gasket sealer compound (included in the anode mounting kit) to coat the bottom face of the anode. This compound can be applied with a putty knife, spatula or similar.
6. Place the anode in position over the stud and on the rubber sheet. Insure that the anode is not in direct contact with the structure’s steel surface.
7. Place the provided steel flat washer over the anode stud and allow the washer to contact the anode core inside the anode recess. If using a resistance washer, do not use the steel flat washer. Instead, install the resistance washer in place of the steel flat washer.
8. Install the ½” Flex-Loc nut on the threaded portion of the anode stud and tighten the nut to secure the anode. If using a resistance washer, do not over tighten the Flex-Loc nut as it may crack the resistance washer.
9. Liberally coat the stud protector gasket with gasket sealer compound and then place the gasket over the anode stud and into the anode recess.
10. Screw on the ½” plastic anode stud protector until it seats against the rubber stud protector gasket. Do not apply excessive torque or the plastic will crack.

Should you have any problems or questions, please call 888-5FARWEST (888-532-7937).