Oltaven Sintered Activated Carbon Rod for Water Purifier Ф32×126

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.

From Media to Finished Filter

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.

What Decides Finished Performance

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.

Applications

• Household reverse osmosis systems: used as a pre‑filter (CTO) or post‑filter (T33) to protect the membrane and improve taste.
• Direct‑drinking water dispensers: provides chlorine reduction and softening in compact installations.
• Built‑in refrigerator water filters: the Ф32×126 size fits many side‑by‑side and multi‑door models; custom sizes are available for other configurations.
• Commercial coffee machines: reduces scale‑forming minerals and off‑tastes that affect beverage quality.

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.

Technical Specifications

The Oltaven Factory and Certifications

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.

OEM/ODM Workflow

1. Requirement review: share your device model, target size (or drawing), required flow rate, water quality conditions, and estimated quantity.
2. Feasibility and proposal: Oltaven’s engineers assess media selection, forming parameters, and end‑cap design, then propose a finished‑filter specification.
3. Sampling: prototype rods are produced for your fit and performance testing; test reports from the CNAS lab can be provided.
4. Validation and approval: you confirm the sample; Oltaven finalises tooling and process settings.
5. Production and quality control: mass production follows IQC, IPQC, and OQC protocols; packaging and logo customisation are applied as agreed.
6. Delivery: finished filters are shipped according to the agreed schedule; ongoing technical support is available.

Start a Custom Project

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.