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Anodes - Zinc
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Marine Protection Products >
Marine Galvanic CP Materials
Zinc
Sacrificial Anodes
for Shipping & Offshore Industries
by Farwest Corrosion Control
 Characteristics
Farwest zinc anodes are cast in current
U.S. Military Specification (Mil-Spec) and Special High Grade high
purity alloys. Farwest zinc anodes are the ideal corrosion protection
solution where the use of aluminum anodes is restricted, as in the upper
areas of tanks.
Features & Benefits
- Economical and Time-Tested,
Farwest zinc anodes set the standard for affordable corrosion
protection.
- Optimal Composition, Quality & Fit
are ensured with anodes designed and manufactured at our suppliers
foundry.
- Comprehensive Range of hull,
tank, engine room, bracelet and other anodes is available to suit
virtually every marine application.
- Pit-Guard Anodes stop corrosive
pitting in cargo and ballast tanks simply and economically.
- Farwest Zinc Anode Alloys include
the latest Mil-Spec delivering trusted performance, as well as Special
High Grade (SHG) for reliable protection wherever Mil-Spec is not
required.
- Immediate Delivery of large
quantities of standard anodes is available from stock.
- Custom Anodes can be produced to
satisfy unique specifications.
Applications
- Hulls of ships, barges, tugs and boats
- Ballast tanks of tankers, ore carriers and freighters
- Bulkheads
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- Piers and pilings
- Submarine pipelines
- Heat exchangers
- Traveling screens
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Installation & Operation
Farwest zinc anodes are normally clamped
or welded into position from an integrated steel core. With proper
installation, the anodes will operate efficiently and economically
without attention. They generate their own current and work silently and
surely to control corrosion. Apart from routine inspection, no labor
cost is involved after installation and no electrical supply is
required.
Farwest Zinc Anodes:
Simple, Economical
Designed specifically for reliable
performance under a variety of environmental conditions, Farwest zinc
anodes operate effectively at both low and high temperatures. Farwest
zinc sacrificial anodes are performance-proven with over 40 years of
research and commercial use.
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Pier and Piling Anodes: PZ
Series
Several different galvanized steel cores are available in
this anode series. When ordering, specify which of the following cores is desired.
- Type "E" - 1/2" diameter
eyebolt in anodes weighing up to 200 lbs; 3/4" over 200 lbs.
- Type "P" - 3/4" standard
pipe in anodes weighing less than 250 lbs; 1" pipe 250 lbs and up.
- Type "R" - 1/2" diameter
rod.
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| Anode |
Pounds |
W |
H |
L |
Core
Type |
Current
Amp-Yrs |
| PZ-50 |
50 |
2" |
2" |
48" |
E, R |
2 |
| PZ-100 |
100 |
3" |
3" |
44" |
E, P, R |
4 |
| PZ-150 |
150 |
4" |
4" |
36" |
E, P, R |
6 |
| PZ-250 |
250 |
9" |
9" |
12" |
E, P, R |
10 |
| PZ-250A* |
250 |
4" |
4" |
60" |
E, P, R |
10 |
| PZ-350 |
375 |
7" |
7" |
30" |
E, P, R |
15 |
| PZ-500 |
500 |
9" |
9" |
24" |
E, P, R |
20 |
*Pipe core for this anode is 3/4"
standard pipe.
Hi-Amp Cast Plates
Solid hull anodes are available without cast-in mounting
strips.
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| Anode |
Pounds |
W |
H |
L |
Current
Amp-Yrs |
| M-23 |
22 |
6" |
12" |
1 1/4" |
1 |
| M-19 |
19 |
6" |
12" |
1" |
0.75 |
| M-10 |
10 |
6" |
12" |
1/2" |
0.5 |
Condenser Anodes: CZ Series
These circular anodes conform to the latest modification of
MIL-A-18001 and are available with either of the following core configurations:
- Type "A" - one 1/2" IPS
galvanized steel pipe.
- Type "B" - two 1/2" IPS
galvanized steel pipes on 3 1/2" centers (not shown).
|
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| Anode |
Lbs |
Dia. |
Core
Type |
| CZ-2 |
1 |
2" |
A |
| CZ-3 |
2 |
3" |
A |
| CZ-4 |
3 |
4" |
A |
| CZ-5 |
5 |
5" |
A |
| CZ-6 |
7 |
6" |
A |
| CZ-9 |
16 |
9" |
B |
| CZ-11 |
24 |
11" |
B |
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Custom Line
For special requirements, HI-AMP anodes for ballast tanks,
piers and pilings can be furnished with a wide variety of cores and to the range of
dimensions shown in the accompanying table.
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| Cross Section |
Lengths |
Nominal Weight
(lbs/in) |
| 1.4" x
1.4" |
6" - 60" |
0.5 |
| 2" x 2" |
6" - 60" |
1.0 |
| 2 1/2" x 2 1/2" |
6" - 60" |
1.5 |
| 3" x 3" |
6" - 60" |
2.3 |
| 4" x 4" |
6" - 60" |
4.2 |
| 5" x 5" |
6" - 48" |
6.5 |
| 7" x 7" |
6" - 36" |
12.8 |
| 9" x 9" |
6" - 24" |
21.0 |
| 9" x 10" |
6" - 24" |
23.4 |
| 10" x 10" |
6" - 24" |
26.0 |
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| Hull
Anodes |
LL-26 Hull Anode
Contains single galvanized steel longitudinal strap. Can be
bolted or welded to hull. Particularly suited for smaller ships, coastal vessels, harbor
tugs, etc. Farwest can add a mounting hole to each mounting strap. |
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| Anode |
Lbs |
W |
H |
L |
Amp-yrs |
| LL-26 |
26 |
4 1/2" |
2 1/4" |
14" |
1 |
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LL-48 Hull Anode
Contains single longitudinal galvanized strap for welding
to hull. Particularly suited for major ships, 10,000 DWT and upward. Farwest
can add a mounting hole to each mounting strap. |
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| Anode |
Lbs |
W |
H |
L |
Amp-yrs |
| LL-48 |
48 |
4 1/2" |
2 1/4" |
24" |
2 |
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Tapered M-24 Hull Anode
Contains two cast-in galvanized steel mounting straps.
Farwest can add a mounting hole to each mounting strap. |
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| Anode |
Lbs |
W |
H |
L |
Amp-yrs |
| Tapered M-24 |
22.5 |
6 1/2" |
1 1/4"" |
14" |
1 |
Military Anodes
The military anodes shown here conform to the latest
modification of mil spec MIL-A-18001.
Anodes in this series contain two cast-in galvanized steel
mounting straps (brass mounting straps are also available) or two cast-in cored holes on
6" centers Farwest can add a
mounting hole to each mounting strap. |
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| Anode |
Lbs |
W |
L |
H |
Amp-yrs |
| M-24 |
22 |
6" |
12" |
1 1/4" |
1 |
| M-23-C |
22 |
6" |
12" |
1 1/4" |
1 |
| M-47 |
42 |
6" |
12" |
2 1/2" |
2 |
| M-47-C |
39 |
6" |
12" |
2 1/2" |
2 |
The military anodes below contain a single
cast-in galvanized steel mounting strap measuring 3/16" x 1 1/4" x 16".
Farwest can add a mounting hole to each mounting strap.
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| Anode |
Lbs |
W |
L |
H |
Amp-yrs |
| M-12 |
11 |
3" |
12" |
1 1/4" |
0.5 |
| M-21 |
21 |
3" |
12" |
2 1/2" |
1.0 |
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A teardrop-shaped military anode containing a single.
Cast-in galvanized steel straps. Farwest can add mounting holes, such as two 3/8" diameter holes on 11" centers.
|
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| Anode |
Lbs |
W |
L |
H |
Amp-yrs |
| M-6 |
5 |
3" |
9" |
1 1/4" |
0.25 |
Ballast Tank Anodes
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TZ Series
Anodes contain 1/2" diameter straight
electrogalvanized steel core rod for direct welding or assembly to two flat bards with
"U" bolts as shown. |
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| Anode |
Lbs |
W |
H |
La |
Lc |
Amp-yrs |
| TZ-27 |
27 |
1.4" |
1.4" |
48" |
60" |
1 |
| TZ-50 |
50 |
2" |
2" |
48" |
60" |
1 |
| TZ-60 |
60 |
2" |
2" |
60" |
72" |
2.25 |
| TZ-70 |
70 |
2 1/2" |
2 1/2" |
48" |
60" |
2.5 |
| TZ-100 |
100 |
2 1/2" |
2 1/2" |
60" |
72" |
4 |
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TZW Series
The core consists of two electro-galvanized steel flat bars
welded to a mild steel rod. Anodes can be clamped, welded or bolted to a ballast tank
structure. |
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| |
| Clamp Type |
Bolt Type |
Lbs |
W |
H |
La |
C |
Amp-yrs |
| TZ-27-WC |
TZ-27WB |
27 |
1.4" |
1.4" |
48" |
24" |
1 |
| TZ-50-WC |
TZ-50WB |
50 |
2" |
2" |
48" |
24" |
2 |
| TZ-60-WC |
TZ-60WB |
60 |
2" |
2" |
60" |
36" |
2.25 |
| TZ-70-WC |
TZ-70WB |
70 |
2 1/2" |
2 1/2" |
48" |
24" |
2.5 |
| - |
TZ-100WB |
70 |
2 1/2" |
2 1/2" |
60" |
36" |
4 |
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BTZ Series
Contains 1/2" diameter bent electro-galvanized steel
core rod on sizes up to 50 lbs for direct welding to structure. Anodes over 50 lbs have
5/8" diameter core rod. Use TZW series anodes where excessive vibration is
anticipated. |
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| Anode |
Lbs |
W |
H |
La |
Lc |
Amp-yrs |
| BTZ-27 |
27 |
1.4" |
1.4" |
48" |
69" |
1 |
| BTZ-50 |
50 |
2" |
2" |
48" |
69" |
2 |
| BTZ-60 |
60 |
2" |
2" |
60" |
81" |
2.25 |
| BTZ-70 |
70 |
2 1/2" |
2 1/2" |
48" |
69" |
2.5 |
| BTZ-100 |
100 |
2 1/2" |
2 1/2" |
60" |
81" |
4 |
Bracelet Anodes
Number of
Segments |
Nom. Pipe
Diameter |
| 4 |
20" - 36" |
| 4 or 6 |
30" - 36" |
| 6 |
30" - 54" |
| 6 or 8 |
40" - 54" |
| 8 |
40" - 72" |
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Q-AMP™ bracelet
anodes are a family of products consisting of quadrants of multiple arc segments. Each
segment contains cast-in, circumferentially oriented steel cores. Bracelets are assembled
with 4, 6 or 8 units depending on pipe diameter. Q-AMP bracelet anodes are superior to
both semicircular bracelet assemblies in the larger sizes and multi-segment, external core
assemblies because they offer:
- More accurate sizing over pipe coatings to eliminate gaps
that promote excessive wastage of the anode at the inside diameter of the bracelet.
- Minimal distortion and "locked-in" stress when
compared to conventional semi-circular bracelets for pipes of about 20"diameter.
The maximum arc length of each segment ranges
from about 14" to about 27". Each segment contains at least one
circumferentially-oriented steel core.
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