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This Thesvin activated carbon filter cartridge is designed for water pitchers, portable sports bottles, and countertop instant-heating dispensers. It combines a food-grade PP housing, high-iodine coconut-shell activated carbon, and ion-exchange resin to reduce chlorine, taste and odour, soften water, and capture heavy metals such as lead and copper. It is aimed at OEM and ODM customers—appliance brands, water-filter companies, and private-label retailers—who need a drop-in or custom-moulded cartridge that matches their host device and delivers consistent gravity-flow performance.
Fitment is the starting point for every Thesvin pitcher cartridge project. The cartridge is built around a precision-injection-moulded PP frame and a fine mesh outlet that controls the gravity-flow path. The outer profile, inlet arrangement, and outlet mesh are matched to the host pitcher, bottle, or dispenser so the cartridge seats correctly without bypass. Because the housing is produced in-house, we can adjust the frame geometry and mesh aperture to suit the seat and water level of your existing product, or tool a new mould for a proprietary shape.
Sealing and location are handled by the moulded features of the housing rather than by a separate gasket list we cannot confirm. The key point is that the cartridge is located by its own frame, and the outlet mesh is sized to prevent carbon fines from escaping into the finished water. This is what keeps the user experience clean—no black water, no grit—while still allowing a practical descent rate under gravity. If you are replacing an existing cartridge, the critical dimensions are the outer diameter at the seat, the overall height, and the position of the outlet. Send these and we will confirm whether a standard housing fits or a new tool is needed.
Typical host devices include household water pitchers, portable sports water bottles, desktop instant-heating water dispensers, and the internal water-tank filter cartridges of capsule coffee machines. In each case, the cartridge is a gravity-fed element, so the fit must be tight enough to force water through the media rather than around it. Thesvin engineers review the interface before quoting, so the first article is not a surprise at assembly.
The filter media are selected for three jobs. First, high-iodine coconut-shell activated carbon rapidly adsorbs residual chlorine and the chlorinous odour that goes with it, along with many organic compounds that affect taste. Second, a high-quality ion-exchange resin softens the water by exchanging calcium and magnesium ions, which reduces scale in kettles and coffee machines, and also helps capture heavy metals such as lead and copper. Third, the moulded mesh and the housing retain sand, rust, and suspended solids that would otherwise pass into the glass.
Because the carbon and resin are blended, the ratio can be tuned to your target. A pitcher aimed at chlorinated municipal water may need more carbon; a market with hard water may need more resin for softening; a product making a lead-reduction claim may need a higher resin share. Thesvin supports this kind of flexible OEM blending, so the cartridge can be positioned for dechlorination, softening, or heavy-metal reduction without changing the outer housing. The housing itself is food-grade PP, and the appearance can be customised with your own mould for colour, logo, and shape.
The result is a cartridge that improves taste and reduces scale in everyday use, while the sealed construction keeps the media where it belongs. For appliance makers, this means the cartridge can be specified into a new pitcher or dispenser without compromising the look or the user experience of the host product.
| Item | Detail |
|---|---|
| Product name | Dechlorination water pitcher filter cartridge / drinking bottle filter cartridge |
| Core filtration materials | Food-grade PP housing + high-efficiency coconut-shell granular activated carbon + high-quality ion-exchange resin |
| Core purification functions | Strong adsorption of residual chlorine and off-colour/off-odour; water softening (removal of calcium and magnesium scale); capture of harmful heavy metals (lead, copper, etc.); removal of sand, rust, and suspended solids |
| Flow and filtration characteristics | Precision injection-moulded filter mesh designed to ensure an excellent gravity-fed descent rate while preventing internal carbon fines from leaking; no black water during use |
| Main application end-products | Household water pitchers, portable sports water bottles, desktop instant-heating water dispenser filter components, built-in water-tank filter cartridges for capsule coffee machines |
| Media ratio and mould customisation | 100% OEM flexible custom manufacturing supported. The mix ratio of activated carbon to resin can be adjusted for target lead-reduction or scale-reduction needs; housing structure and shape fully support customer-specific moulding |
| Quality certification and safety system | Produced in the company’s 20,000 m² clean workshop, meeting international water-contact and food-contact safety standards. The company holds ISO 9001 / ISO 14001 system certification and IATF 16949 certification. |
Thesvin’s quality system is built around dimensional consistency for fitment-critical parts. The company has held IATF 16949 automotive quality management certification since 2024, and applies IQC, IPQC, and OQC controls from incoming material to final shipment. For a pitcher cartridge, that means incoming carbon and resin are checked, in-process moulding and filling are monitored, and outgoing cartridges are inspected for dimensions, mesh integrity, and cleanliness. Our own laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust-holding capacity, and resistance, so performance claims are supported by measured data rather than estimates.
Production takes place in Zhongshan, Guangdong, China, in a 50,000 m² facility that includes six clean workshops totalling 20,000 m². The company holds ISO 9001, ISO 14001, and ISO 45001 certifications, and products can be supplied with REACH and RoHS compliance documentation. With more than 20 years of filtration R&D and manufacturing experience and exports to Europe, the United States, Japan, and South Korea, Thesvin supports OEM/ODM projects covering size, structure, media grade, housing material, logo, and packaging, and has developed more than 1,000 filtration solutions. Multiple automated lines support monthly capacity in the millions of pieces.
To move quickly, send us the device or vehicle model, the cartridge size or a drawing, the expected water flow or airflow, the operating conditions (water hardness, temperature, pressure), and the quantity you plan to order. If you do not have a drawing, an old part and a photo of the seat are enough for us to start. Our engineers will reply with a fitment assessment, a media recommendation, and a quotation. Contact Thesvin to begin.
Fitment depends on the seat diameter, overall height, and outlet position of your device. Thesvin produces the PP housing in-house, so we can match an existing housing to your seat or tool a new mould for a proprietary shape. Send the device model and a photo or drawing of the seat, and we will confirm whether a standard cartridge fits.
Yes. An old cartridge plus a photo of the seat is enough for our engineers to assess the interface. We measure the critical dimensions and recommend either a standard housing or a new tool. This is often faster than preparing a drawing from scratch.
The high-quality coconut-shell activated carbon in this cartridge achieves over 95% removal of residual chlorine from tap water, and also adsorbs off-colour, off-odour, and some organic pollutants. Under standard use (about 2–4 L per day for a household), a single cartridge lasts up to 150 L or 1–2 months. Performance data are verified in our CNAS-accredited laboratory.
Yes. The blend of activated carbon and ion-exchange resin can be adjusted for your target—more carbon for dechlorination, more resin for softening or heavy-metal reduction such as lead and copper. The outer housing can stay the same, so you can offer several performance variants from one platform.
MOQ is typically 1,000–2,000 pieces depending on specification and packaging; for custom models we recommend 5,000 pieces. Standard items ship in 7–15 days, while OEM custom orders usually take 25–35 days for mass production. We can arrange scheduled deliveries for long-term customers.
Yes. For B2B customers with a clear project, we provide free standard samples (freight usually paid by the customer) for performance and market evaluation. For custom samples, our engineering team will build to your drawing or sample and provide a CNAS laboratory test report to support your technical evaluation.
Under standard household use of about 2–4 L per day, replace the cartridge after 150 L or every 1–2 months, whichever comes first. In hard-water areas or with heavier use, the replacement interval may be shorter. The sealed PP housing and mesh design keep carbon fines contained throughout the service life.
Thesvin holds IATF 16949 (since 2024), ISO 9001, ISO 14001, and ISO 45001 certifications. Products can be supplied with REACH and RoHS compliance documentation, and our CNAS-accredited laboratory issues test reports for filtration efficiency and flow. Please contact us with your market requirements so we can confirm the applicable documents.