IQ Water Tank Air Filter
| Brand | Deepflow |
|---|---|
| Model | CYTANKV01A1 |
| Origin | Shanghai, China |
| Type | In-Tank Ventilation Filter for Ultra-Pure Water Systems |
| Regulatory Design | ISO 14644-1 Class 5 (ISO Class 5) Compatible Ventilation |
| Filtration Media | Hydrophobic PTFE Membrane |
| Filter Area | 25 cm² |
| Maximum Operating Pressure | 0.3 bar (gauge) |
| Sterilization Compatibility | Autoclavable (121°C, 30 min, 3 cycles) |
| Integrity Testable | Forward Flow & Bubble Point |
Overview
The IQ Water Tank Air Filter (Model CYTANKV01A1) is an engineered vent filtration solution designed specifically for ultra-pure water (UPW) storage tanks in pharmaceutical, biotechnology, and analytical laboratory environments. It functions as a critical barrier between the headspace of a purified water reservoir and ambient air, preventing microbial ingress, particulate contamination, and volatile organic compound (VOC) absorption while permitting controlled gas exchange to accommodate thermal expansion/contraction and pump-induced pressure differentials. The filter operates on the principle of hydrophobic membrane-based sterile ventilation: its certified 0.2 µm pore-rated polytetrafluoroethylene (PTFE) membrane repels liquid water and blocks airborne microorganisms—including bacteria, yeasts, and molds—without compromising airflow integrity. Unlike generic desiccant or charcoal filters, this unit maintains consistent differential pressure response across its service life and supports routine non-destructive integrity verification per ASTM F838-22 and ISO 13408-2.
Key Features
- Hydrophobic PTFE membrane with validated bacterial retention efficiency ≥ log 7 CFU reduction (Brevundimonas diminuta challenge per ISO 13408-2)
- Compact, vertically oriented housing optimized for integration into stainless-steel UPW tank manways or dedicated vent ports
- Autoclavable construction: full assembly withstands 121°C saturated steam for 30 minutes over three consecutive cycles without delamination or seal degradation
- Integrated pressure-relief bypass (optional configuration) to prevent tank vacuum formation during rapid drawdown
- Pre-sterilized and gamma-irradiated options available (25 kGy dose, Co-60 source, certificate of conformance included)
- Material compatibility verified per USP and cytotoxicity and systemic injection testing
Sample Compatibility & Compliance
The CYTANKV01A1 is compatible with Type I ultrapure water (resistivity ≥ 18.2 MΩ·cm at 25°C, TOC ≤ 1 ppb) and meets the mechanical and microbiological requirements for use in GMP-regulated water-for-injection (WFI) and purified water (PW) distribution systems. Its design conforms to ASME BPE-2022 surface finish standards (Ra ≤ 0.4 µm electropolished 316L SS housing), and the filter element complies with ISO 9001:2015 manufacturing controls. Installation aligns with EU Annex 1 (2022) recommendations for sterile barrier system validation and supports FDA 21 CFR Part 11–compliant electronic batch records when paired with optional digital pressure-differential monitoring modules.
Software & Data Management
While the CYTANKV01A1 is a passive mechanical component, it integrates seamlessly into supervisory control and data acquisition (SCADA) architectures via optional add-on sensors. A calibrated differential pressure transducer (0–100 mbar range, ±0.5% FS accuracy) can be mounted upstream/downstream to provide real-time clogging diagnostics and predictive maintenance alerts. Raw sensor outputs interface with industry-standard protocols (Modbus RTU, 4–20 mA analog) and are compatible with LIMS platforms including LabWare LIMS and Thermo Fisher SampleManager. All integrity test logs—including bubble point (≥ 32 psi for 0.2 µm PTFE) and forward flow (< 0.5 mL/min at 25 psi)—are timestamped and stored with user ID traceability to satisfy ALCOA+ data governance principles.
Applications
- Final venting of Type I ultrapure water storage tanks in semiconductor fab labs and central utility plants
- Microbial barrier for WFI holding tanks in aseptic manufacturing suites (Category C/D environments)
- Protection of reverse osmosis permeate and EDI product streams during intermittent operation
- Head-space conditioning in chromatography mobile phase reservoirs requiring VOC-free air
- Backup ventilation for nitrogen-purged water systems where inert gas supply may experience transient interruption
FAQ
Is the CYTANKV01A1 suitable for WFI applications under EU GMP Annex 1?
Yes—when installed with documented integrity testing, sterilization validation, and material traceability, it satisfies the sterile ventilation requirements for WFI storage per Annex 1 §7.72–7.75.
Can the filter be integrity-tested in situ without removal from the tank?
Yes—forward flow and bubble point tests can be performed online using standard portable test rigs compliant with ISO 13408-2 Annex B.
What is the recommended replacement interval?
Filter lifetime depends on ambient air quality; typical service life is 12 months in ISO Class 5 environments and 6 months in ISO Class 7 settings—validated by trending differential pressure rise ≥ 25 mbar.
Does Deepflow provide installation qualification (IQ) documentation?
Yes—customizable IQ/OQ protocols aligned with ASTM E2500-22 are available upon request, including torque specifications, leak test procedures, and material certificates.
