IT-IT
Contattaci Oltaven’s sintered activated carbon rod for water purifiers (Ф32×126 mm) is a finished filter cartridge made from high‑iodine coconut shell carbon and food‑grade ion exchange resin. It…
FILTER MEDIA / ROLLS · SHEETS · DIE-CUT
Oltaven’s sintered activated carbon rod for water purifiers (Ф32×126 mm) is a finished filter cartridge made from high‑iodine coconut shell carbon and food‑grade ion exchange resin. It reduces chlorine, taste and odour, softens water, and helps remove heavy metals such as lead and mercury. It is designed for household reverse osmosis systems (as a pre‑ or post‑filter), direct‑drinking water dispensers, built‑in refrigerator filters, and commercial coffee machines. Oltaven supplies the finished filter, not just the media.
Activated carbon is the starting point, but the finished cartridge is what determines real‑world performance. The carbon’s iodine value and pore structure set the adsorption ceiling. The forming step—sintering the carbon with a food‑grade binder—creates a rigid block with a uniform micro‑porous structure. How that block is shaped, cut, and sealed into a cartridge then decides the pressure drop, the flow path, and whether fine carbon dust can escape.
Oltaven sells finished sintered carbon rods, not loose media. Every rod is produced under controlled conditions so that the same carbon lot can deliver consistent filtration when formed into different diameters and lengths. The Ф32×126 size is one standard format; other diameters from Ф30 to Ф60 mm and various lengths are available through flexible tooling.
Three factors shape the finished filter’s efficiency, resistance, and capacity: media choice, forming, and sealing.
Media choice. High‑iodine coconut shell carbon provides a high surface area for adsorbing chlorine, organic compounds, and odours. Adding food‑grade ion exchange resin enables softening and heavy‑metal reduction. The ratio of carbon to resin and the carbon’s activity level directly affect how much contaminant the rod can hold before breakthrough.
Forming. Sintering binds the carbon particles into a block with a uniform micro‑porous structure. A well‑formed block has high initial flow and high filtration accuracy—typically 5–10 µm for this type—without releasing black carbon fines. The forming process also sets the rod’s mechanical strength and its resistance to channeling. An overly dense block increases pressure drop; an overly loose one loses efficiency.
Sealing and end‑cap design. How the rod is sealed into its housing or end caps determines whether water bypasses the filter. Oltaven can weld end caps to match specific device requirements, ensuring the finished cartridge fits and seals correctly. This is part of the customisation service, not a separate component sale.
Because Oltaven controls media selection, forming, and sealing, we can adjust the finished filter’s balance of efficiency, resistance, and capacity for a given application. For example, a coffee machine filter may need a different flow‑versus‑capacity trade‑off than a refrigerator filter. These adjustments are made at the finished‑filter level, not by blending media alone.
These applications share a need for reliable, repeatable filtration in a compact cartridge. Oltaven’s custom forming and sealing options let device makers specify the exact outer diameter, length, and end‑cap geometry their product requires.
| Item | Detail |
|---|---|
| Product name | Carbon block water filter / CTO filter for water purifiers and refrigerators |
| Core filtration materials | High‑iodine coconut shell activated carbon + food‑grade ion exchange resin |
| Core performance | Softens water and helps prevent scaling; adsorbs chlorine (bleach) and off‑odours; reduces colour and taste; helps remove harmful heavy metals such as lead and mercury |
| Accuracy and service life | Uniform micro‑porous structure, high initial flow, high filtration accuracy, no black carbon fines; large adsorption capacity for long service life |
| Standard size reference (outer diameter × length, mm) | Ф60×130 / Ф62×240 / Ф37.5×75 / Ф38×57 / Ф40×195 / Ф51×127 / Ф32×126 / Ф32×106 |
| Main end applications | Household RO purifiers (pre‑filter CTO / post‑filter T33), direct‑drinking dispensers, built‑in refrigerator water filters, commercial coffee machines |
| Customisation | Full OEM/ODM support. Tooling can be made to match any length, diameter, or inner/outer diameter ratio required by the device; end‑cap welding available |
| Quality systems | Production base certified to ISO 9001 and IATF 16949; filter materials meet strict drinking‑water safety standards; quality control supported by a CNAS‑accredited testing centre |
Oltaven is an OEM/ODM filter manufacturer with more than 20 years of experience and over 1,000 developed filtration solutions. Our production base in Zhongshan, Guangdong, China, covers 50,000 m², including six cleanrooms totalling 20,000 m². A CNAS‑accredited laboratory supports filter efficiency, dust‑holding capacity, and resistance testing. The plant holds IATF 16949 (obtained in 2024) and ISO 9001, ISO 14001, and ISO 45001 certifications, and products comply with REACH and RoHS requirements. IQC, IPQC, and OQC checks run throughout production. This infrastructure supports consistent finished‑filter quality for customers exporting to Europe, the US, Japan, and Korea.
To receive a tailored quote for the Ф32×126 sintered carbon rod or a custom finished filter, please provide: your device or vehicle model (if applicable), required size or drawing, target airflow or water flow, operating conditions (e.g., water quality, pressure, temperature), and estimated order quantity. Contact Oltaven to discuss your project—we welcome OEM/ODM partnerships and long‑term supply arrangements.
Resistance depends on the carbon’s pore structure, the sintering density, and the internal flow path. A denser block or a finer carbon grade increases resistance but may improve filtration accuracy. Oltaven adjusts forming parameters to balance resistance and efficiency for each application.
It starts with your device model, required dimensions or drawing, target flow rate, water conditions, and estimated quantity. Oltaven’s engineers then propose a finished‑filter specification, produce samples for your testing, and finalise tooling after approval. The CNAS lab can provide performance test reports during sampling.
The rod typically achieves 5–10 µm filtration accuracy, with high initial flow and no black carbon fines. It effectively reduces chlorine, taste and odour, and with the ion exchange resin helps soften water and remove heavy metals such as lead and mercury. Performance depends on water quality and flow rate; Oltaven can provide test data from its CNAS‑accredited lab.
Yes. Oltaven supports full OEM/ODM customisation of outer diameter, length, inner/outer diameter ratio, and end‑cap welding. Tooling can be made to match your device requirements, and logo and packaging customisation are also available. Over 1,000 filtration solutions have been developed for customers.
Standard sizes typically have an MOQ of 1,000–2,000 pieces; custom sizes are recommended from 5,000 pieces. Samples can be arranged for evaluation. Standard items ship in 7–15 days, while custom production generally takes 25–35 days after approval. Exact terms are confirmed with your inquiry.
Under normal municipal water conditions (TDS below 500 ppm, chlorine below 2 ppm), the recommended replacement interval is 6–12 months or after treating about 2,000–4,000 litres. High‑use applications such as commercial coffee machines may require more frequent changes based on actual water throughput. Oltaven can provide life‑test guidance for your target market.
Oltaven’s CNAS‑accredited laboratory can issue reports on filtration efficiency, dust‑holding capacity, and resistance. The plant holds ISO 9001, ISO 14001, ISO 45001, and IATF 16949 certifications, and products comply with REACH and RoHS. Compliance documents can be provided for export markets.
Please contact Oltaven through the inquiry form with your device model, required size or drawing, flow requirements, operating conditions, and estimated quantity. Our team will respond with a tailored proposal and samples if needed. We welcome OEM/ODM partnerships and long‑term supply discussions.