Sealed Explosion-Proof Motor
The motor assembly is selected for the stated explosion-protection configuration and mounted outside the main airflow path on the illustrated models.
AIRTECHZ · Hazardous-area portable ventilation
Explosion-Proof Portable Ventilation Fan
A portable axial duct blower for hazardous-area air supply and extraction. This explosion-proof portable ventilation fan is designed for locations where flammable gases, vapours or combustible materials may be present. The CTF series combines a sealed explosion-proof motor, explosion-proof switch, cast-aluminum propeller and robust steel housing in a compact carry design.
Core Construction
Explosion-Proof Switch
A robust switch assembly provides local operating control. Confirm switch rating, cable, plug and power arrangement for the destination market.
Cast-Aluminum Propeller
The aluminum propeller provides a strong, lightweight rotating assembly for portable axial ventilation duty.
Robust Steel Housing
The cylindrical steel casing, protective grille, carrying handle and stable feet support transport and repeated job-site use.
ATEX-Certified Explosion-Proof Ventilation Fan
The supplied product information lists the marking II 2G Ex h IIB T4 Gb and references the following standards:
- EN ISO 80079-36:2016 – non-electrical equipment for explosive atmospheres, basic method and requirements.
- EN ISO 80079-37:2016 – non-electrical types of protection including constructional safety, control of ignition sources and liquid immersion.
- EN 14986:2017 – design of fans working in potentially explosive atmospheres.
ATEX Certificate
The AIRTECHZ CTF series explosion-proof portable ventilation fan is ATEX certified for hazardous-area ventilation applications. The certified explosion-protection marking is II 2G Ex h IIB T4 Gb, and the certification references EN ISO 80079-36:2016, EN ISO 80079-37:2016 and EN 14986:2017.
ATEX certificate available: A copy of the applicable ATEX certificate and conformity documentation can be provided for customer review with the quotation or order documents. Please confirm the required model, voltage, frequency and hazardous-area classification when requesting the certificate.
Do not select equipment from a product photo or general description alone. Request the applicable certificate, declaration and nameplate information for review before purchase.
CTF Series Technical Specifications
Performance values below are reproduced from the supplied datasheet. Voltage entries indicate available supply versions; they do not mean one motor is automatically dual-voltage. Confirm the exact voltage, frequency and performance point when ordering.
| Model | Fan diameter | Voltage | Frequency | Power | Speed | Air capacity | Static pressure | Noise |
|---|---|---|---|---|---|---|---|---|
| CTF-20 | 200 mm / 8 in | 220/110 V | 50/60 Hz | 230 W | 2800/3300 r/min | 25/35 m³/min | 245 Pa | 60 dB(A) |
| CTF-25 | 250 mm / 10 in | 220/110 V | 50/60 Hz | 320 W | 2800/3300 r/min | 43/53 m³/min | 294 Pa | 68 dB(A) |
| CTF-30 | 300 mm / 12 in | 220/110 V | 50/60 Hz | 520 W | 2800/3300 r/min | 65/75 m³/min | 373 Pa | 71 dB(A) |
| CTF-35 | 350 mm / 14 in | 220/110 V | 50/60 Hz | 750 W | 2800/3300 r/min | 82/90 m³/min | 598 Pa | 76 dB(A) |
| CTF-40 | 400 mm / 16 in | 220/110 V | 50/60 Hz | 1100 W | 2800/3300 r/min | 96 m³/min | 700 Pa | 80 dB(A) |
| CTF-45 | 450 mm / 18 in | 220/110 V | 50/60 Hz | 750 W | 1450 r/min | 160 m³/min | 224 Pa | 78 dB(A) |
| CTF-50 | 500 mm / 20 in | 220/110 V | 50/60 Hz | 1100 W | 1450 r/min | 166 m³/min | 270 Pa | 84 dB(A) |
| CTF-60 | 600 mm / 24 in | 220/110 V | 50/60 Hz | 2200 W | 1450 r/min | 290 m³/min | 300 Pa | 90 dB(A) |
The supplied table does not state the test method, tolerance, measurement distance for noise or the exact mapping between every dual-listed frequency and performance value. Ask AIRTECHZ to confirm the duty point and documentation required for your project.
Optional FRAS Anti-Static Flexible Duct
The optional black flexible duct is made from PVC flame-resistant and static-free (FRAS) fabric reinforced with a helical steel wire. It is intended to connect to the blower for temporary air supply or extraction of fumes, dust and contaminated air.
- Flame-resistant and anti-static FRAS fabric
- Helical steel-wire reinforcement
- Flexible construction for temporary routing
- Earth clamp supplied with each duct
Grounding matters: the duct’s conductive path and earth clamp must be connected and verified according to the site procedure. Duct length, bends and restrictions increase resistance and reduce delivered airflow.
Product Views & Production
Typical Applications
Ship Holds & Shipyards
Temporary supply or extraction ventilation during inspection, repair and maintenance, subject to the vessel’s hazardous-area procedures.
Refineries & Petrochemical Plants
Portable ventilation for approved work zones where the specified marking and site classification match.
Oil Platforms & Power Plants
Maintenance ventilation where compact equipment and flexible duct routing are needed.
Mines & Underground Work
Ventilation for applicable underground locations only after confirming the required equipment group and certification.
Tunnels & Construction
Air supply or extraction for temporary work areas that require a portable, duct-connectable fan.
Confined-Space Work
One component of a complete safe-work system that also includes atmospheric testing, permits, monitoring and rescue planning.
OEM supply
Colors, Branding & Order Configuration
Multiple housing colors are available. Carton packaging can be prepared with the buyer’s OEM brand, subject to artwork approval and order quantity.
For an accurate quotation, send the required fan diameter, airflow or pressure duty, duct length, voltage/frequency, hazardous-area classification, gas/dust group, temperature class, plug/cable requirement, quantity and destination.
How to Select the Correct Model
1. Confirm the Hazard
Identify gas, vapour, mist or dust; the zone/category; gas or dust group; temperature class; and ambient conditions.
2. Define the Ventilation Duty
Provide the space volume, target air changes, required airflow, duct diameter, total duct length, bends and whether air is supplied or extracted.
3. Confirm Electrical Details
Specify voltage, frequency, plug or terminal arrangement, cable length and any site-specific switch or connector requirements.
Need help sizing the fan? Send a simple sketch showing the work area and duct route. AIRTECHZ can compare the CTF models against the required airflow and expected duct resistance.
Frequently Asked Questions
What is the MOQ for standard models?
The minimum order quantity for standard models is 30 units per model.
What is the MOQ for a customized color?
The minimum order quantity for a customized color is 100 units.
What is the production lead time?
The standard production lead time is approximately 30 days after the order details are confirmed.
Which fan sizes are available?
The CTF series is available in 200, 250, 300, 350, 400, 450, 500 and 600 mm nominal diameters, corresponding to 8 through 24 inches.
Which voltage options are available?
The CTF series is available in 110 V or 220 V versions at 50/60 Hz. Confirm the exact voltage and frequency required for the selected model when ordering.
Can the packaging box be customized?
Yes. The carton design, printed logo, product information, labels and shipping marks can be customized. Please provide the required artwork and carton information for confirmation before production.
What is the warranty period?
The standard warranty period is 12 months.
Related Ventilation Products
Portable Ventilation Blower
Portable axial blowers for general temporary air supply and extraction.
Industrial Exhaust Fan
Fixed industrial exhaust solutions for workshops and commercial facilities.
Centrifugal Inline Duct Fan
Inline centrifugal airflow for duct systems that need higher pressure.
Request a CTF Fan Quotation
Send your fan size or required airflow, hazardous-area classification, voltage/frequency, duct requirements, quantity and delivery destination.