The Jyntrel sintered activated carbon filter cartridge Ф51×127 is a coconut-shell carbon block with built-in ion-exchange resin, designed to reduce chlorine, taste, odour and scale in household water purifiers, refrigerator water dispensers and commercial coffee machines. It filters potable water in systems where a compact, high-flow carbon block is needed. This cartridge suits appliance OEMs, water-purifier brands and distributors who require a reproducible filter element for a defined housing. Jyntrel manufactures it in Zhongshan, Guangdong, China, and supports custom outer and inner diameters.
Although this is a water filter, the same system-thinking applies: performance depends on the flow path, the velocity through the carbon block and the environment in which the cartridge sits. In a typical purifier, water enters the housing, passes radially through the sintered carbon wall and exits through the central core. The Ф51×127 size refers to an outer diameter of 51 mm and a length of 127 mm; the wall thickness and core diameter are set by the mould and can be adjusted for the housing.
At the rated flow of approximately 1.0 L/min, the face velocity across the carbon block remains low enough for adequate contact time, which supports chlorine reduction. If a system runs at a higher flow, pressure drop increases and contact time falls; the cartridge still filters, but efficiency and service life are affected. For this reason, Jyntrel asks for the operating flow rate and the expected daily water consumption before quoting. The cartridge is intended for cold, potable water and should not be exposed to hot water or freezing conditions.
The carbon block is formed from high-iodine-value coconut-shell activated carbon, chosen for its microporous structure and adsorption capacity. It is combined with food-grade ion-exchange resin, which helps soften the water and reduce scaling on downstream components. The block acts as a depth filter: particles such as sediment and rust are intercepted through the wall, while dissolved chlorine, off-flavours and organic compounds are adsorbed. The resin also contributes to the reduction of heavy metals such as lead and mercury.
The manufacturing process gives a uniform pore structure, so initial flow is high and the cartridge does not release black carbon fines into the water. Because the carbon is sintered rather than loosely packed, the block holds its shape throughout service. The standard filtration rating is 5 µm, with custom ratings from 1 µm to 10 µm available. Chlorine reduction is typically greater than 95% under the recommended operating conditions. The rated flow is approximately 1.0 L/min, and the suggested replacement interval is 6–12 months or about 6,000 L of treated water, whichever comes first, depending on feed-water quality.
Jyntrel supplies standard sizes including Ф60×130, Ф62×240, Ф37.5×75, Ф38×57, Ф40×195, Ф51×127, Ф32×126 and Ф32×106 mm (outer diameter × length). For OEM/ODM projects, we can adjust length, outer diameter and inner diameter, and we offer end-cap welding options to match your housing. To recommend the right configuration, we need the following information:
With these details, Jyntrel can propose a specification and provide a sample for evaluation.
| Item | Detail |
|---|---|
| Product name | Carbon block water filter cartridge (CTO filter) for water purifiers and refrigerators |
| Core filtration media | High-iodine coconut-shell activated carbon with food-grade ion-exchange resin |
| Core performance | Softens water and reduces scaling; adsorbs chlorine, colours and odours; reduces heavy metals such as lead and mercury |
| Accuracy and service life | Uniform microporous structure, high initial flow, high filtration accuracy, no black carbon fines; large adsorption capacity for long service life |
| Standard sizes (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 reverse-osmosis purifiers (pre-RO CTO/post-RO T33), direct-drinking dispensers, side-by-side refrigerator water filters, commercial coffee machines |
| Customisation | Full OEM/ODM support. Length, diameter and inner/outer diameter ratios can be tooled to suit the device; end-cap welding available |
| Quality system | ISO 9001 and IATF 16949 certified production; filter media meet potable-water safety standards; CNAS-accredited laboratory for quality control |
This cartridge is used as a pre-filter or post-filter in household reverse-osmosis systems, where it protects the membrane from chlorine and sediment. It is also fitted in direct-drinking water dispensers, side-by-side refrigerators with built-in water filters, and commercial coffee machines where scale and taste are critical. In each case, the Ф51×127 format allows a compact installation with a flow rate matched to typical point-of-use demand. Jyntrel supplies these cartridges to appliance OEMs, water-purifier brands and distributors, and can adapt the specification to the housing and performance targets of a specific program.
Jyntrel operates multiple automated production lines with a monthly capacity of several million pieces, which supports stable supply for volume programs. With more than 20 years of export experience to Europe, the United States, Japan, South Korea and other markets, we understand the documentation and consistency required by international customers. Our production base covers 50,000 m², including six clean workshops totalling 20,000 m², where filter media are handled and assembled to limit contamination. The site is certified to ISO 9001 and IATF 16949 (obtained in 2024), and our in-house laboratory is accredited by CNAS (China National Accreditation Service for Conformity Assessment), so we can issue test reports for flow, pressure drop, chlorine reduction and other parameters. Quality control follows IQC, IPQC and OQC stages, and each batch can be supplied with a COA. Products comply with REACH and RoHS where applicable, and we can provide compliance documents on request.
To receive a quotation or a sample, please tell us your device or vehicle model, the required size or a drawing, the operating flow rate or water consumption, and any special conditions such as feed-water quality or temperature. Also include your estimated quantity and target delivery date. Send these details through our contact page and our engineering team will respond with a proposed specification.
This is a water filter, so air velocity does not apply. For water, the rated flow is approximately 1.0 L/min. At higher flow rates, pressure drop increases and contact time decreases, which can reduce chlorine reduction efficiency. Please specify your operating flow so we can confirm suitability.
We need the water flow rate (L/min) or daily water consumption, not airflow. Please also provide the feed-water chlorine level, hardness and TDS. With these data, Jyntrel can recommend the appropriate carbon block specification and estimate service life.
Under recommended conditions, the cartridge reduces chlorine by more than 95% and filters particles down to 5 µm (standard). Custom ratings from 1 µm to 10 µm are available. Efficiency depends on flow rate and feed-water quality, so we test with your operating parameters.
Yes. Jyntrel supports OEM/ODM customisation of outer diameter, inner diameter, length and end-cap welding. Standard sizes range from Ф32×106 to Ф62×240 mm. Provide a drawing or sample and we will propose a matching configuration.
Contact us through the inquiry form with your device model, required size, flow rate and quantity. We can provide 2–5 free samples of standard sizes (you cover freight); custom samples may incur a fee, refundable on bulk orders. Quotes are typically issued within 1–2 business days after we receive complete data.
For standard sizes, the MOQ is typically 1,000–2,000 pieces, depending on packaging. Custom sizes usually require 5,000 pieces. We can discuss flexible arrangements for long-term programs.
Standard items ship in 7–15 days if stock is available. Custom production typically takes 25–35 days after drawing approval. Jyntrel holds inventory for repeat customers and can arrange scheduled deliveries to support your production.
Replace every 6–12 months or after about 6,000 L of treated water, whichever comes first. If feed-water chlorine or sediment is high, the interval may be shorter. Monitor flow and taste as indicators.