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This HEPA-grade dust filter box is a high-efficiency particulate filter designed for ventilators, anesthesia machines, industrial respirators, and high-specification air purifiers. It captures PM0.3 particles at ≥99.99% efficiency and combines particle removal with activated carbon adsorption for VOCs. Ranveth builds it with medical-grade PTFE media and offers full customisation to your device's dimensions.
The performance of this filter box comes from how the media layers are paired, not from any single material. Ranveth engineers combine a high-precision PTFE microporous membrane, top-grade glass fibre, and composite activated carbon into a layered structure. The PTFE membrane provides fine particle capture at ≥99.99% for PM0.3, while the glass fibre layer supports the membrane and contributes to dust holding. The activated carbon layer adsorbs VOCs and odorous gases, so the filter addresses both particulate and gaseous contaminants in one unit.
This pairing directly affects three things a buyer cares about: efficiency, airflow resistance, and service life. The PTFE membrane delivers high efficiency without excessive pressure drop, which helps protect the ventilator's air supply. The glass fibre and carbon layers are selected to balance dust capacity against resistance, so the filter lasts longer in demanding environments. Ranveth offers HEPA grades from H13 to H14, allowing you to choose the efficiency level that matches your device's airflow and filtration requirements.
Every media choice is backed by testing. Ranveth's CNAS-accredited laboratory verifies filtration efficiency, resistance, and dust holding capacity, so the layer build you specify is supported by measured data.
| Item | Detail |
|---|---|
| Product name | HEPA Dust Filter Box / Ventilator Filter / Respirator Cartridge |
| Core media composition | High-precision PTFE microporous membrane, top-grade glass fibre, composite activated carbon |
| Core filtration performance | Dual effect: precise removal of PM0.3 particles (efficiency ≥ 99.99%) |
| Extended grade options | Available from HEPA H13 to H14 filter cartridges |
| Main applications | Clinical medical ventilators, anesthesia machine circuits, industrial respirators / positive-pressure respirators, high-specification fresh air purification and oxygen generation equipment |
| Custom dimensions | Tooling and production fully according to customer drawings. Non-toxic medical-grade ABS/PC injection-moulded housing and medical silicone ultrasonic-welded sealing ring to ensure no air leakage |
| Certifications | CNAS-accredited laboratory for filtration efficiency verification; Medical Supplies GMP certification; IATF 16949; ISO 14001; ISO 45001 |
This filter box is specified for clinical medical ventilators and anesthesia machine breathing circuits, where reliable particle removal protects both patients and equipment. In industrial settings, it serves industrial respirators and positive-pressure respirators, capturing dust and fumes while the activated carbon layer adsorbs VOCs. It is also used in high-specification fresh air purification systems and oxygen generation equipment that require HEPA-grade filtration.
Because the housing and sealing ring are made from medical-grade ABS/PC and medical silicone, the filter is suitable for environments where non-toxic materials and leak-free performance are essential. The ultrasonic welding of the sealing ring ensures a secure seal without adhesives.
Ranveth customises this filter box to your device. To prepare an accurate quotation and sample, please provide the following:
With these details, our engineering team can recommend the appropriate media pairing and layer build, and produce a sample for your validation.
Ranveth's approach to filter media is test-backed. Our CNAS-accredited laboratory verifies filtration efficiency, resistance, and dust holding capacity, so every media pairing we propose is supported by measured performance data.
Manufacturing takes place in a 50,000 m² plant that includes six cleanrooms totalling 20,000 m².We are certified to IATF 16949 (achieved in 2024) and hold ISO 9001, ISO 14001, and ISO 45001 management system certificates. Our products comply with REACH and RoHS, and we can provide compliance documentation.
With more than 20 years of experience in filtration and ongoing exports to Europe, the United States, Japan, and South Korea, Ranveth supports OEM/ODM projects with custom dimensions, structures, media grades, housing materials, logos, and packaging. Our quality control follows IQC, IPQC, and OQC processes to maintain consistency across batches.
To discuss your application and receive a sample or quotation, please contact our team. Share your device model, required dimensions or drawing, airflow or water flow requirements, operating conditions, and estimated quantity. We will respond with a tailored proposal.
It combines a high-precision PTFE microporous membrane, top-grade glass fibre, and composite activated carbon. This pairing delivers ≥99.99% efficiency for PM0.3 particles and adsorbs VOCs. The exact layer build can be adjusted to meet your airflow and resistance targets.
The filter achieves ≥99.99% removal of PM0.3 particles, corresponding to HEPA H13/H14 grades. Ranveth offers both H13 and H14 options so you can select the grade that fits your device. Efficiency is verified in our CNAS-accredited laboratory.
Yes. Ranveth produces fully custom filter boxes based on your drawings or samples. We can adjust dimensions, housing material (medical-grade ABS/PC), and sealing (medical silicone ultrasonic welding) to ensure a precise fit and leak-free performance.
Contact us with your device or vehicle model, required dimensions or drawing, airflow or water flow, operating conditions, and estimated quantity. We will review your requirements and provide a sample and quotation. Existing specification samples are available for free evaluation (freight collect); custom samples are quoted based on complexity.
The standard MOQ is 1,000 pieces; custom orders are negotiated based on tooling. Lead time for stock items is about 7–15 days, and custom batches typically take 25–35 days. During peak seasons, we prioritise repeat customers.
Replacement intervals depend on the operating environment and contaminant loading. In clinical settings with continuous use, we recommend monitoring pressure drop and replacing when it reaches the device manufacturer's limit. In industrial settings with high dust, more frequent changes may be needed. Ranveth can provide guidance based on your specific conditions.
Ranveth holds Medical Supplies GMP certification, IATF 16949, ISO 9001, ISO 14001, and ISO 45001. Our CNAS-accredited laboratory provides test reports for filtration efficiency and resistance. Products comply with REACH and RoHS, and compliance documents are available.
Yes. With a 50,000 m² plant, six cleanrooms (20,000 m²), and automated production lines, we have the capacity for stable long-term supply. Our IQC, IPQC, and OQC processes and batch traceability under IATF 16949 help ensure consistent performance. For inquiries, please contact us.
