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This coffee machine filter cartridge is a water purification filter compatible with CAPRESSO machines. It combines high-quality coconut shell activated carbon with food-grade ion exchange resin to reduce sediment, rust, chlorine, odours and hardness in cold water. It is designed for automatic, semi-automatic and commercial coffee machines, as well as OEM water filter customisation. Ranveth manufactures it with a focus on how media layers work together to balance filtration efficiency, flow resistance and service life.
The performance of a water filter starts with how its media are chosen and arranged. In this cartridge, coconut shell activated carbon and food-grade ion exchange resin are paired: the carbon addresses chlorine, taste and odour, while the resin targets hardness minerals that cause scale. The media are held within a structure that allows water to pass through evenly, so the cartridge can intercept sediment and rust particles without creating unnecessary resistance. This pairing is what determines the balance between filtration efficiency, pressure drop and the life of the cartridge.
From a materials perspective, coconut shell carbon is selected for its pore structure, which provides a large surface area for adsorption. The ion exchange resin is food-grade and works by exchanging hardness ions for softer ones, reducing the potential for scale build-up in the coffee machine's heating system. The two media are not simply mixed; they are arranged in layers that allow each to perform its role without being blocked prematurely by the other. The result is a cartridge that maintains flow while delivering consistent water quality over its service interval.
The filter operates at pressures between 20 and 120 psi (approximately 1.4 to 8.3 bar) and at temperatures from 2°C to 38°C, for cold water only. The service life is approximately 250 litres or 2–3 months, depending on local water quality and usage frequency. This life is a direct outcome of the media pairing and layer build: the carbon's capacity and the resin's exchange capacity are matched to the expected water volume, so the cartridge does not exhaust one medium long before the other.
| Item | Detail |
|---|---|
| Filtration Media | High-quality coconut shell activated carbon and food-grade ion exchange resin |
| Micron Rating | Fine microporous interception, effectively captures sediment, rust and other large particles |
| Filter Life | Approximately 250 litres or 2–3 months (depending on local water quality and usage frequency) |
| Operating Pressure | 20–120 psi (approximately 1.4–8.3 bar) |
| Operating Temperature | 2°C–38°C (cold water filtration only) |
| Applications | Automatic coffee machines, semi-automatic espresso machines, commercial coffee machine water softening, OEM water filter cartridge customisation |
| Quality Certification System | Production complies with ISO 9001/14001, IATF 16949, medical supplies GMP standards, and CNAS national-level testing certification |
This cartridge is intended for coffee machines that require cold water filtration. It fits automatic coffee machines, semi-automatic espresso machines and commercial coffee machines where water softening is needed to protect the heating system and maintain consistent extraction. Because the media combination reduces scale and chlorine, it helps preserve the flavour of the coffee and extends the working life of the machine's components.
Beyond direct replacement, the cartridge platform is also used for OEM water filter customisation. Coffee machine brands and distributors can adapt the media, housing or packaging to their specific equipment and market requirements. The same layer build approach can be tuned for different water conditions, as long as the operating parameters remain within the specified pressure and temperature range.
To develop a filter that matches your coffee machine or product line, we need a clear picture of the application. Please provide the following details:
With these inputs, our engineering team can evaluate the appropriate media pairing and layer structure, then propose a specification that balances filtration performance, flow resistance and service life. We can also work from a competitor sample if you need a replacement fit.
Ranveth is a filter manufacturer based in Zhongshan, Guangdong, China, with more than 20 years of experience in filtration product development and manufacturing. The company operates a 50,000 m² production site, which includes six cleanrooms totalling 20,000 m². This environment supports consistent assembly and helps avoid secondary contamination during production.
Our in-house laboratory is accredited by CNAS (China National Accreditation Service for Conformity Assessment) and can issue test reports for filtration efficiency, dust holding capacity and resistance. This means the media choices and layer builds we propose are backed by test data, not guesswork. For buyers, that translates into more predictable performance and fewer surprises in the field.
We hold IATF 16949 certification (achieved in 2024) and ISO 9001, ISO 14001 and ISO 45001 system certifications. Products comply with REACH and RoHS environmental regulations, and we can provide the corresponding compliance documents. Quality control follows IQC, IPQC and OQC processes across the production flow. Our automated production lines support a monthly capacity of millions of pieces, and we offer OEM/ODM services covering dimensions, structure, media grade, logo and packaging. To date, we have developed more than 1,000 filtration solutions and have been exporting to Europe, the United States, Japan and South Korea for over 20 years.
If you are evaluating a water filter for a coffee machine or need a custom cartridge, we are happy to discuss your requirements. To help us respond efficiently, please share the device or vehicle model, the size or drawing, the required water flow and operating conditions, and your estimated quantity. You can reach us through our contact page. Our team will review your information and provide a calm, consultative response with sample and quote options.
It uses high-quality coconut shell activated carbon paired with food-grade ion exchange resin. The carbon targets chlorine, taste and odour, while the resin reduces hardness minerals that cause scale. This combination is arranged in layers to balance filtration efficiency, flow resistance and service life.
The media are arranged so water passes through evenly, allowing each layer to perform its role without premature blocking. This helps maintain flow within the 20–120 psi operating range while still intercepting sediment and rust. The result is a steady balance between filtration performance and pressure drop over the cartridge's life.
Yes, it is designed to be compatible with CAPRESSO machines, with dimensions and connections intended for direct replacement. It operates at 20–120 psi and 2°C–38°C for cold water only. For other models, please send the device model and a drawing so we can confirm fit.
Yes, we support OEM/ODM customisation of media grade, dimensions, structure, logo and packaging. To evaluate a custom build, we need the device model, size or drawing, required water flow, operating conditions and estimated quantity. Our team can then propose a specification that matches your machine and water conditions.
The filter life is approximately 250 litres or 2–3 months, depending on local water quality and usage frequency. We recommend replacing it when either the volume or time limit is reached, or earlier if you notice reduced flow or changes in taste. This interval is based on the media capacity and is intended to protect the coffee machine's heating system.
The MOQ for custom orders is typically 5,000 pieces for standard configurations, while fully customised builds may require 10,000 pieces or more. Lead time is generally 15–20 days for standard items and 25–30 days for custom production after approval. Please confirm the exact MOQ and schedule with our team based on your specification.
Yes, we can provide samples for evaluation. To prepare a quote, please share the device model, size or drawing, water flow, operating conditions and quantity. Our team will respond with sample availability and pricing through the <a href="/en/contact">contact page</a>.
We control consistency through fixed media suppliers with incoming batch testing, automated key processes and CNAS-accredited laboratory checks on finished batches. Each batch can be accompanied by a COA and test reports. This approach helps ensure that the media pairing and layer build perform as specified from order to order.