Oltaven Sintered Activated Carbon Rod Filter Ф32×106 for Water Purifiers

The Oltaven sintered activated carbon rod filter Ф32×106 is a finished water filter cartridge made from high-iodine coconut shell carbon and food-grade ion exchange resin. It reduces chlorine, odours, colour, and heavy metals such as lead and mercury, and helps soften water by preventing scale. It is designed for household reverse osmosis systems (as a pre- or post-filter), direct drinking machines, refrigerators with built-in water dispensers, and commercial coffee machines.

From Media to Finished Filter

Media alone does not make a filter. The same activated carbon powder can become a loose, dusty granule bed or a rigid, porous rod depending on how it is formed. In Oltaven's sintered carbon rod, coconut shell carbon and a food-grade binder are heated under controlled pressure so the particles bond into a uniform microporous block. This sintering step creates a fixed pore structure with high internal surface area.

The choice of media sets the potential: high-iodine coconut shell carbon offers strong adsorption of chlorine, taste, and odour compounds, while the built-in ion exchange resin adds softening and heavy-metal reduction. Forming then decides how well that potential is delivered. A well-formed rod has consistent density, so water flows evenly through the wall and contacts the carbon for the intended time. Poorly formed blocks can channel, shed fines (black dust), or collapse under pressure.

Oltaven sells finished filters, not just media. That means we control every step from carbon selection and binder mixing to sintering, cutting, end-cap welding, and final testing. The result is a cartridge whose efficiency, resistance, and capacity are predictable in your device.

What Decides Finished Performance

Three performance numbers matter most to a system designer: efficiency (how much contaminant is removed), resistance (pressure drop at a given flow), and capacity (how long the filter lasts). Each is shaped by forming decisions.

• Efficiency: A finer, more tightly bonded carbon structure gives more contact time and captures smaller particles, but it also raises resistance. Oltaven balances these by controlling carbon particle size and sintering temperature so the rod achieves high chlorine reduction and particulate retention without excessive pressure loss.
• Resistance: The outer diameter and wall thickness determine the flow path length. A larger diameter or thinner wall usually lowers resistance, while a smaller diameter or thicker wall increases contact time. Because Oltaven can customise outer diameters from Ф30 to Ф60 mm, we can match the rod to your pump's pressure and your desired flow rate.
• Capacity: The total amount of carbon and its activity level set the service life. High-iodine coconut carbon with a large adsorption capacity, combined with uniform pore structure, lets the filter hold more contaminant before breakthrough. The ion exchange resin also contributes to capacity by softening water and reducing scale build-up that would otherwise blind the carbon.

Sealing and end-cap design also affect finished performance. Oltaven can weld end caps to the rod to create a secure seal that prevents bypass and ensures all water passes through the carbon. The exact sealing method is specified per project and confirmed during sampling.

Applications

The Ф32×106 mm size is a common form factor for compact water treatment devices. Typical uses include:

• Household reverse osmosis (RO) systems: as a pre-filter (CTO) to protect the RO membrane from chlorine and particulates, or as a post-filter (T33) to polish taste.
• Direct drinking machines and water dispensers: for chlorine, odour, and heavy-metal reduction.
• Refrigerators with built-in water filters: to improve taste and reduce contaminants.
• Commercial coffee machines: as a pre-filter to remove chlorine and scale-forming minerals that affect coffee flavour and machine life.

Because Oltaven offers flexible sizing (outer diameter Ф30–Ф60 mm, with custom length and inner/outer diameter ratios), the same media and forming approach can be adapted to many other water purification devices.

Technical Specifications

Note: The specifications above are for the product family. The Ф32×106 size is one of several standard dimensions; exact performance data for your application can be confirmed with a sample.

The Oltaven Factory and Certifications

Oltaven brings over 20 years of filtration product development and manufacturing experience to every custom project. We have developed more than 1,000 filtration solutions for customers worldwide, and we support OEM/ODM customisation of size, structure, filter media grade, end-cap design, logo, and packaging.

Our production base covers 50,000 m², including six cleanrooms totalling 20,000 m². These controlled environments help prevent particle and microbial contamination during production, which is critical for drinking-water products. Multiple automated production lines support a monthly capacity of millions of pieces.

Quality is backed by our CNAS-accredited laboratory, which can issue test reports for filtration efficiency, dust holding capacity, and resistance. Our quality management system is certified to ISO 9001, ISO 14001, and ISO 45001, and we added IATF 16949 automotive quality certification in 2024. Our products comply with REACH and RoHS environmental regulations, and we can provide compliance documents on request. We have been exporting to Europe, the United States, Japan, and South Korea for over 20 years.

OEM/ODM Workflow

Starting a custom project with Oltaven follows a clear path:

1. Inquiry: Share your device or application, required dimensions or drawing, flow rate, operating conditions, and estimated quantity.
2. Evaluation and proposal: Our engineers review your requirements and recommend a media formulation, forming approach, and end-cap design. We confirm feasibility and outline the project plan.
3. Sampling: We produce custom samples, typically within 7–15 days, for your testing. Standard sizes like Ф32×106 may be available from stock for quick evaluation.
4. Testing and validation: You test the samples in your system. We can also provide CNAS test reports for key performance parameters. Adjustments are made as needed.
5. Order and production: Once the design is approved, we confirm the order details and schedule production. Standard models typically ship in 7–15 days; custom orders in 25–35 days.
6. Quality control and delivery: IQC, IPQC, and OQC checks are performed throughout production. Finished filters are packed according to your branding requirements and shipped.

Start a Custom Project

To help us respond quickly, please include the following in your inquiry:

• Device or vehicle model (if applicable) and intended use
• Required dimensions or a drawing (outer diameter, length, end-cap style)
• Target flow rate and operating pressure
• Operating conditions (water quality, temperature, expected service life)
• Estimated annual quantity and packaging requirements

We will review your information and reply with a tailored proposal. For standard sizes like Ф32×106, we can provide samples for testing. Contact Oltaven to start the conversation.