EN
This is a drop-in coffee machine water filter cartridge built by Thesvin to match the Calphalon housing, using a coconut-shell activated carbon and food-grade ion exchange resin core. It filters tap water before it reaches the brew path, reducing sediment, rust particles, chlorine, odours, heavy metals and scale-forming minerals. It is made for owners and service partners of automatic, semi-automatic and commercial coffee machines who need a replacement cartridge that locates and seals like the original, and for OEM buyers who want the same cartridge under their own brand.
Fitment comes first on this part. The cartridge is moulded to the Calphalon dimensional envelope, so the body diameter, overall length and connection geometry follow the host machine's filter seat rather than a generic canister size. The result is a cartridge that seats into the existing holder without adapters, and that you push in and seat the same way as the part you are removing.
From a structural point of view, three things decide whether a replacement cartridge works in a coffee machine: the outer diameter against the holder bore, the length against the available depth, and the inlet/outlet interface against the water path. All three are controlled on this part as a matched set. The moulded body keeps its shape under line pressure, and the media bed is packed so that water passes through the full bed instead of channelling around it.
Because the housing is a push-fit component, the outside profile matters as much as the media. Rough or out-of-tolerance mouldings cause tight insertion, incomplete seating or bypass at the seal face. Thesvin controls these dimensions in process, not only at final inspection, which is what keeps cartridge-to-cartridge behaviour consistent across a production run.
If your machine is a variant, a different Calphalon model year, or a machine that uses a similar form factor from another supplier, send the old cartridge or a drawing. The dimensions can be checked against existing tooling before anything is quoted.
The media is a two-stage arrangement. Granular activated carbon from coconut shell adsorbs chlorine and chloramine by-products, together with the taste and odour compounds that make coffee taste flat or metallic. Food-grade ion exchange resin then targets hardness minerals, the calcium and magnesium that form limescale on heater elements, thermoblocks and solenoid valves. Fine microporous interception captures sediment and rust carried in from the mains.
The practical benefit is twofold. Water chemistry stabilised before brewing gives a cleaner extraction and a more consistent cup, and reduced scaling protects the machine's hydraulic components from the gradual blockage that shortens service life. The cartridge is intended for cold water filtration only, which is the normal feed arrangement in coffee machine water circuits.
Performance depends on what comes out of the tap. Hard water consumes ion exchange capacity faster; high sediment loads blind the carbon bed sooner. The rated life of approximately 250 litres, or 2-3 months, is a working figure that should be shortened where water is hard or daily throughput is high, and can be extended slightly where water is soft and use is light.
| Item | Detail |
|---|---|
| Product | Coffee machine water purifying filter cartridge, compatible with Calphalon |
| Filtration media | Coconut-shell activated carbon with food-grade ion exchange resin |
| Particle retention | Fine microporous interception of sediment, rust and other large particles |
| Service life | Approximately 250 litres, or 2-3 months, depending on local water quality and use frequency |
| Operating pressure | 20-120 psi (approximately 1.4-8.3 bar) |
| Operating temperature | 2°C to 38°C, cold water filtration only |
| Applications | Automatic coffee machines, semi-automatic espresso machines, commercial coffee machine water softening, OEM water filter cartridge custom production |
| Quality systems | Manufactured under ISO 9001, ISO 14001 and IATF 16949 systems, medical supplies GMP standard, with CNAS national-level testing |
Thesvin holds IATF 16949, the automotive quality management system certification obtained in 2024, which sets the discipline for dimensional consistency on a part like this: tolerances defined, process capability watched, and changes controlled. That discipline is applied through IQC, IPQC and OQC. Incoming carbon and resin are checked on arrival, moulded components and assembly are inspected in process, and finished cartridges are checked again before shipment, with samples retained for traceability.
Our own laboratory is accredited by CNAS, the China National Accreditation Service for Conformity Assessment, and can issue test reports covering filtration efficiency, dust holding capacity and resistance. The production base covers 50,000 m², including six clean workshops totalling 20,000 m², where cartridges are filled and assembled in a controlled environment. The company operates under ISO 9001, ISO 14001 and ISO 45001, and products meet REACH and RoHS requirements with compliance documentation available on request.
Multiple automated lines support output in the millions of pieces per month. Standard compatible cartridges carry a MOQ of 5,000 pieces with typical delivery in 15-20 days for stock or small build-ahead orders. OEM projects are quoted individually, generally from 10,000 pieces, with a 25-30 day production cycle once tooling and packaging are approved.
To get a quote, send us the device or vehicle model, the cartridge size or a drawing, the airflow or water flow the machine needs, the operating conditions (pressure, temperature, hardness), and the quantity you expect per order and per year. If you have an old cartridge, post it instead of drawing it. That is usually the fastest route to a confirmed fit. Reach us through the contact page and we will reply with the next step.
The cartridge is moulded to the Calphalon dimensional envelope, so its body diameter, length and connection geometry follow the original filter seat and it seats without adapters. For a different model year or a variant we have not produced before, send the machine model plus a photo of the holder measured with calipers, or post the old cartridge, and we will confirm before you order.
Coconut-shell activated carbon adsorbs chlorine, taste and odour compounds, while food-grade ion exchange resin targets the calcium and magnesium that cause limescale. Fine microporous interception captures sediment and rust particles. The combined effect is cleaner-tasting water for brewing and less scale on heaters and valves.
Rated life is approximately 250 litres, or 2-3 months, depending on local water quality and how often the machine is used. Hard water or heavy daily throughput shortens that interval; soft water and light use can stretch it slightly. Change the cartridge when flow drops or taste changes, whichever comes first.
Yes. Posting the used cartridge is usually the fastest way to confirm fit, because we can measure the outside profile and the connection directly against our existing tooling. If the variant is new to us, those measurements become the basis for a custom mould. A dimensioned drawing works equally well.
Yes. Standard stock samples ship in 3-5 working days; custom samples generally take 7-15 days depending on complexity. Samples can be accompanied by a CNAS laboratory test report, and you are welcome to have them verified independently. Send the machine model, dimensions, flow requirement and target quantity through the contact page for a quote.
Standard compatible cartridges have a MOQ of 5,000 pieces, with typical delivery in 15-20 days for stock or small build-ahead orders. OEM projects are quoted individually, generally from 10,000 pieces, with a 25-30 day production cycle after tooling and packaging approval.
The cartridge is rated for 20-120 psi, approximately 1.4-8.3 bar, and 2°C to 38°C. It is for cold water filtration only, which matches the normal feed arrangement in coffee machine water circuits. Stay inside that window, since sustained overpressure can distort the housing and cause bypass at the seal face.
Moulded dimensions are controlled in process, not only at final inspection, under an IATF 16949 quality system obtained in 2024, applied through IQC, IPQC and OQC checks with retained samples for traceability. Our CNAS-accredited laboratory can issue reports on filtration efficiency, dust holding capacity and resistance. Tell us your machine model and quantity through the contact page and we will take it from there.