Galvanic cathodic protection requires the periodic replacement of consumed anodes. In heater treaters and other production vessels cylindrical aluminum anodes make this replacement process a snap. These anodes are cast from the high potential alloy, which delivers a voltage of approx. 1.10 volts (with respect to an Ag/AgCl reference cell). The alloy contains nominal percentages of indium, zinc and silicon. This combined with the unique shape allows the cylindrical anode to offer one of the best current outputs available. The chemical composition of this anode also has a proven track record for delivering superior protection in produced brines with elevated temperatures.
All Canada Metal cylindrical anodes are cast with threaded steel pipe cores. A stabilizing rod attached to these cores ensures a strong mechanical bond between the core and anode. To guarantee the highest quality anode, we conduct emission tests on each production run of aluminum anodes.

| Zinc | Aluminum | Nominal Dimensions | |||||
| Type Number |
Nom Wgt. Lbs (Kg) |
Type Number |
Nom Wgt. Lbs (Kg) |
Mounting |
A-Length In (mm) |
B-Diameter In (mm) |
X-Dimen In |
| Treater Z321 | 39.0 (17.7) | Treater 321 | 16.5 (7.5) | Threaded | 21.5 (546) | 3.0 (76) | 1.0 1.5 |
| Treater Z321A | 39.0 (17.7) | Treater 321A | 16.5 (7.5) | Threaded | 21.5 (546) | 3.0 (76) | 4.9 |
| Treater Z330 | 56.0 (25.4) | Treater 330 | 23.5 (10.7) | Threaded | 30.0 (762) | 3.0 (76) | 1.0 1.5 |
| Treater Z321A | 56.0 (25.4) | Treater 330A | 23.5 (10.7) | Threaded | 30.0 (762) | 3.0 (76) | 4.0 |

Ideal for higher temperature or lower chloride saltwater environments.