Chloropac® System: Effective Marine Growth Prevention for Shipboard Installations
The Chloropac® MLF system (Range SB50 – SB200) is a proven solution for preventing marine growth in seawater piping, heat exchangers, sea chests, and coolers. Ship owners and operators worldwide prefer this system, with thousands of installations already in place. Continuous low-level hypochlorination has shown to be more effective than other marine growth prevention methods, offering over 40 years of reliable service in the marine industry.
How the Chloropac® MLF System Works
The process begins by diverting a small volume of seawater—about 2m³/hr (or 9 GPM)—from a pressurized seawater line. This water flows through electrolytic cells at high velocity, where a portion of the salt is converted into sodium hypochlorite. This solution is then directed back to the sea chest, where it mixes with incoming seawater.
As a result, the cooling water contains a trace level of sodium hypochlorite, enough to prevent marine organisms from attaching and growing in the system. This method ensures all circuits, from intake to discharge, remain free from fouling. Additionally, the system can automatically adjust the sodium hypochlorite output based on the flow rate, ensuring optimal efficiency.
With its proven track record, the Chloropac® system continues to deliver effective, long-term marine growth prevention, minimizing maintenance costs and improving operational efficiency.
Comparison Chloropac® MLF system to Other Methods
Effective Dosage |
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The Chloropac electrochlorination system effectively controls both micro and macro fouling organisms by low continuous dose of 0.5 ppm or less. Additionally, it ensures efficient marine growth prevention
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In contrast, copper ion-type systems claim a dose rate of 1 ppb suffices for all marine growth. However, a dose rate of ~20 ppb is actually needed to control macro fouling. Additionally, continuous dissolution of copper and aluminum does not effectively combat micro fouling. | |
Cell Longevity and Maintenance Costs |
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| The Chloropac system uses platinum-on-titanium electrolytic cells (anodes) to produce sodium hypochlorite from seawater. These cells are warranted for five years, but typically last around seven years. | Conversely, copper-based systems use “sacrificial anodes” that dissolve quickly, requiring replacement every 12-24 months at a high cost. Therefore, ongoing consumable and maintenance costs are lower with the Chloropac system. | |
Control and Environmental Impact |
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| Chloropac system controllers can be adjusted manually or automatically to regulate hypochlorite production based on demand, allowing for zero or near-zero residual overboard discharge. | On the other hand, copper anodes dissolve continuously, discharging copper overboard and adding heavy metal pollutants to the ocean. | |
Chemical Handling and Safety |
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| The Chloropac system produces sodium hypochlorite using only ambient seawater, eliminating the need to store biocides or precursor chemicals on board. All produced sodium hypochlorite is directly injected into the sea chests, simplifying purchasing, storage, handling, and chemical logistics. | In contrast, chemical injection systems require the storage and handling of highly corrosive and toxic chemicals, creating additional storage and safety hazards on board. | |
Contact Us for More Information
If you have any questions or require spare parts for your Evoqua system.
SPARE PARTS AVAILABLE FROM STOCK:
Evoqua PN |
DWG PN |
SPEC PN |
Description |
| W3T290525 | 5/1035 | 12047 | MLF 50 Cell Assembly |
| W3T290795 | 5/0988 | 11563 | Cathode MLF 50 |
| W3T290794 | 5/0987 | 10106 | Anode MLF 50 |
| W3T290796 | 5/0989 | 11562 | Inner bi polar MLF 50 |
| W3T290526 | 5/1036 | 11504 | MLF 100 Cell Assembly |
| W3T290797 | 5/0990 | 11646 | Cathode MLF 100 |
| W3T290798 | 5/0991 | 15016 | Anode MLF 100 |
| W3T290799 | 5/0992 | 11648 | Inner bi polar MLF 100 |
| W2T624744 | 5/0974 | 10115 | Union MLF |
| W2T624745 | 5/0975 | 11556 | Union nut MLF |
| W3T290793 | 5/0976 | 11552 | Split collar MLF |
| W2T625196 | 5/0977 | 10116 | O-ring MLF |
| W2T624748 | 5/0978 | 11551 | Inner spacer MLF |
| W2T624749 | 5/0980 | 11639 | Sleeve MLF |
| W2T624750 | 5/0981 | 11641 | Titanium pin MLF |
| W2T624751 | 5/0982 | 10119 | Spacer pip MLF |
| 12624 | Flow indicator DN25 | ||
| 12625 | Flow indicator DN40 |
STANDARD VALVES:
Evoqua PN |
DWG PN |
SPEC PN |
Description |
| W2T630794 | 6D-16511 | 6S-13913/3 | Shipside valve DN25 ANSI 150 |
| W2T630795 | 6D-16511 | 6S-13913/4 | Shipside valve DN40 ANSI 150 |
| W2T630800 | 6D-16768 | 6S-13929/1 | Shipside valve DN15 EN 1092 |
| W2T630801 | 6D-16768 | 6S-13929/3 | Shipside valve DN25 EN 1092 |
| W2T630802 | 6D-16768 | 6S-13929/4 | Shipside valve DN40 EN 1092 |
| W2T631206 | 6D-19764 | 6S-30766/2 | Shipside valve DN25 JIS 10K |
| W2T631207 | 6D-19764 | 6S-30766/3 | Shipside valve DN40 JIS 10K |
| W2T630797 | 6D-17405 | 6S-13914/1 | Check Valve DN15 ANSI 150 |
| W2T625162 | 6D-17405 | 6S-13914/2 | Check Valve DN25 ANSI 150 |
| W2T625163 | 6D-17405 | 6S-13914/3 | Check Valve DN40 ANSI 150 |
| W2T630805 | 4-24357 | 6S-13930/1 | Check Valve DN15 EN 1092 |
| W2T630806 | 4-24357 | 6S-13930/2 | Check Valve DN25 EN 1092 |
| W2T630807 | 4-24357 | 6S-13930/3 | Check Valve DN40 EN 1092 |
| W2T631116 | 6D-17750 | 6S-30629/1 | Check Valve DN15 JIS 10K |
| W2T631117 | 6D-17750 | 6S-30629/2 | Check Valve DN25 JIS 10K |
| W2T631118 | 6D-17750 | 6S-30629/3 | Check Valve DN40 JIS 10K |
| W2T821953 | 6D-19949 | 6S-32995/1 | Diaphragm Valve DN15 ANSI 150 |
| W2T821954 | 6D-19949 | 6S-32995/2 | Diaphragm Valve DN25 ANSI 150 |
| W2T821955 | 6D-19949 | 6S-32995/3 | Diaphragm Valve DN40 ANSI 150 |
| W2T821957 | 6D-19949 | 6S-32995/5 | Diaphragm Valve DN15 EN1092 |
| W2T821958 | 6D-19949 | 6S-32995/6 | Diaphragm Valve DN25 EN1092 |
| W2T821959 | 6D-19949 | 6S-32995/7 | Diaphragm Valve DN40 EN1092 |
| W2T625176 | 4-21329 | 6S-13536/2 | Diaphragm Valve DN25 EN1092 |
| W2T625584 | 4-21329 | 6S-13536/3 | Diaphragm Valve DN40 EN1092 |
| W2T630811 | 6D-19757 | 6S-13939/1 | Diaphragm Valve DN25 JIS 10K |
| W2T630812 | 6D-19757 | 6S-13939/2 | Diaphragm Valve DN40 JIS 10K |
Send your inquiry to info@venteville.com
