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Ranveth's rotary humidifier filter is a spunlace-fabric evaporative media designed for self-priming humidifiers, purifier-humidifier combos and industrial constant-temperature/humidity air handlers. It filters out calcium and magnesium ions from water to prevent white-powder carryover, while its capillary structure releases moisture evenly. This filter suits appliance OEMs and HVAC equipment makers who need a custom-fit, durable wick that holds up to continuous rotation in a water tank.
The core of this filter is a high-absorbency humidifier paper or polymer humidifier fiber, processed into a spunlace nonwoven. Spunlace entangles fibers mechanically, creating a dense yet open network that wicks water rapidly through capillary action and exposes a large surface area for evaporation. That pairing—hydrophilic fiber plus spunlace bonding—directly sets the three performance levers buyers care about: evaporation efficiency, airflow resistance and service life.
Because the fibers are entangled rather than glued, the media keeps its pore structure when wet. Water climbs the sheet evenly, so the whole evaporative surface contributes instead of just the submerged zone. The result is stable humidity output at lower fan effort, and less risk of localized dry spots that cause mineral buildup. The same structure physically intercepts calcium and magnesium ions, keeping them in the water rather than releasing them as white dust.
Layer build is adjusted to the device: basis weight, thickness and the number of fiber layers are selected so the filter matches the humidifier's water uptake rate and airflow path. A stiffer grade is available where the filter must hold shape while rotating through a water trough. All grades receive an antimicrobial and anti-mildew treatment to resist sour odours and mould growth in the tank.
| Item | Detail |
|---|---|
| Product name | Rotary humidifier filter / humidifier wheel filter / evaporative humidifier filter |
| Core media | High-absorbency humidifier paper or polymer humidifier fiber (spunlace nonwoven) |
| Filtration and humidification performance | Physically intercepts calcium and magnesium ions in water (no white-powder evaporation); strong capillary water uptake and rapid evaporation; long-lasting suppression of bacteria and mould |
| Structural and mechanical advantage | Special stiffness-reinforcement process gives high wet stiffness—does not soften, collapse or fall apart after long soaking and rotation in the water tank |
| Main end applications | High-end cold-evaporation mist-free humidifiers, air purifiers with humidification modules, industrial constant-temperature/humidity air-handling units |
| Frame and size customisation | 100% OEM flexible customisation based on customer's complete equipment drawings. Injection-moulded plastic gear rings, central shaft interfaces, humidification area and thickness can all be tooled and manufactured |
| Quality certification system | Production backed by the company's 50,000 m² clean plant and CNAS-accredited testing laboratory. The company holds ISO 9001, ISO 14001 and IATF 16949 certification |
This filter is built for cold-evaporation, mist-free humidifiers where a rotating wheel draws water from a tank and releases it as invisible vapour. It also fits air purifiers that include a humidification module, and industrial constant-temperature/humidity air-handling units that need a reliable evaporative wick. In each case the media pairing is chosen to match the water quality, duty cycle and airflow of the host equipment.
Because the filter is 100% customised to the equipment drawing, it can be adapted to different tank geometries, drive interfaces and humidification capacities. Typical buyers are appliance OEMs, HVAC equipment manufacturers and private-label brands serving European, US, Japanese and Korean markets.
To quote accurately, we need the following from you:
With these inputs we select the media grade, layer build and stiffness level, then confirm the frame and gear-ring design before sampling.
Ranveth's media choices are test-backed: our in-house laboratory is CNAS-accredited and can issue reports on filtration efficiency, dust holding capacity and resistance.
Production runs in a 50,000 m² plant that includes six cleanrooms totalling 20,000 m². The company has held IATF 16949 since 2024 and also maintains ISO 9001, ISO 14001 and ISO 45001 systems.
Products comply with REACH and RoHS requirements, with compliance documents available on request. With more than 20 years of filter development and manufacturing and over 20 years of continuous export to Europe, the US, Japan and Korea, we support OEM/ODM customisation of size, structure, media grade, frame material, logo and packaging. Our address is Zhongshan, Guangdong, China.
Send your device model, size drawing, required airflow or water flow, operating conditions and quantity. We will confirm the media pairing, propose a layer build and return a quotation with sample lead time. Contact our team to start the conversation.
It uses a high-absorbency humidifier paper or polymer humidifier fiber formed into a spunlace nonwoven. This pairing gives rapid capillary water uptake and even evaporation while physically intercepting calcium and magnesium ions. The media is treated for antimicrobial and anti-mildew performance.
Basis weight, thickness and fiber layers are selected together so the filter matches the device's water uptake and airflow path. A denser build raises evaporation surface area but can increase resistance, so we balance the two for your equipment. The spunlace bonding keeps pores open when wet, supporting stable output at lower fan effort.
Yes. We customise 100% to your equipment drawing, including injection-moulded plastic gear rings, central shaft interfaces, humidification area and thickness. Size, structure, media grade, frame material, logo and packaging can all be adapted. Send a drawing or 3D file so we can confirm the fit.
Service life depends on water hardness, daily run time and cleaning. The antimicrobial treatment and wet stiffness help the filter resist softening and odour over long soaking. We recommend confirming the replacement interval with our CNAS laboratory using your water conditions.
Send your device model, size drawing, required airflow or water flow, operating conditions and quantity. We will propose a media pairing and layer build, then quote with sample lead time. Contact us through the inquiry form to begin.
MOQ and lead time are set per project based on tooling and material selection; they are confirmed in your quotation. Because every build is drawing-specific, we finalise these after reviewing your size and volume. Please include your target annual quantity in the inquiry.
The media physically intercepts calcium and magnesium ions, so evaporation does not release white powder. An antimicrobial and anti-mildew treatment resists sour odours and mould growth in the tank. Performance depends on incoming water quality and regular cleaning.
Ranveth has exported to Europe, the US, Japan and Korea for over 20 years. Products comply with REACH and RoHS, and compliance documents are available. Tell us your target market so we can align documentation with your requirements.