Quick answer: Pentair C-155 is a 10-micron activated-carbon filter for electroplating-bath solution filtration. It is used in process-solution filtration to help control organic contamination and fine particulate without introducing carbon fines into the bath. See the C-155 specifications and sizes before selecting a model.

Description
Pentair C-155 is a carbon filter cartridge designed specifically for electroplating applications. Its construction is cellulose-free, uses activated carbon, and includes a post-filtration layer to help prevent carbon fines from entering the solution. C-155 is not an RO membrane and does not replace the electroplating-wastewater treatment required for heavy-metal or cyanide-bearing wastewater.
Technological Excellence and Benefits
The C-155 construction is designed to help control carbon-fines release, which is important for maintaining clean bath solution.
The benefits of this technology include:
- Better compatibility with acidic and alkaline solutions up to 82°C
- A post-filtration layer for carbon-fines control
- Permanently molded endcap gaskets to simplify cartridge change-out
Actual performance depends on bath chemistry, contaminant load, flow rate, housing, and the replacement interval specified for the filtration system.
Specifications
Pentair C-155 has the following specifications:
| MODEL | MAX. DIMENSIONS | μ (NOMINAL) | INITIAL PSI @ FLOW RATE | CASE QUANTITY |
|---|---|---|---|---|
| C-155X10T | 2.63” x 9.75” (67 mm x 248 mm) | 10 | 3.4 psi @ 1 gpm (0.2 bar @ 3.8 Lpm) | 30 |
| C-155X20T | 2.63” x 20” (67 mm x 508 mm) | 10 | 3.4 psi @ 2 gpm (0.2 bar @ 7.6 Lpm) | 30 |
| C-155X30T | 2.63” x 30” (67 mm x 762 mm) | 10 | 3.4 psi @ 3 gpm (0.2 bar @ 11.4 Lpm) | 30 |
| C-155X40T | 2.63” x 40” (67 mm x 1,016 mm) | 10 | 3.4 psi @ 4 gpm (0.2 bar @ 15.1 Lpm) | 12 |
Applications in Industry
The filter is intended for a range of electroplating applications, including automotive components, electronics, hardware, and consumer-product finishing. Suitability must be confirmed against the plating solution and filtration-system design at your facility.
Sustainability and Cost Efficiency Aspects
Operating cost depends on actual cartridge life, contaminant load, and the change-out schedule. Monitor differential pressure and solution quality so cartridge changes are based on operating data.
Comparison with Other Products
Compare cartridges by chemical compatibility, dimensions, micron rating, flow, temperature limit, and carbon-fines control—not only by initial purchase price.

For electroplating-bath filtration, use the Pentair C-155 product page as the source for models and specifications. Watermart can help check housing compatibility, cartridge length, temperature, and flow for your application.
For more information, contact us via WhatsApp or email, or visit the Pentair C-155 product page.