The Ramfan VF-UB20xx is an ATEX certified hazardous area blower with a totally enclosed motor which is safe for use in a variety of potentially explosive atmospheres.

Product Information

VF-UB20xx (115v), VF-UB20xx (230v)

Ramfan™ is the world leading manufacturer of fans and ventilators for hazardous areas.

Super compact and lightweight, at up to 980 cfm (1,666 m3/hr) it delivers the highest airflow in its class.

Ideal for hazardous areas, it is tough, resistant to chemicals has anti-static housing and is supplied with a 7.6m long power cable.  It operates at an ultra-quiet level of 74dB at one metre.

The optional anti-static Quick-Couple™ Canister stores and protects duct from rips and tears and helps for a quick and easy set-up.  It is available with either a 4.6 or 7.6 metre duct.

 NSN Codes

4940-01-603-7098 - VF-UB20xx (230V)

  • Ultra Quiet

    74dB at 1 meter, low ear fatigue

  • Ducting

    Allows for direction of airflow to workspace

Features & Benefits

  • ATEX and IECEx certified for use in Zone 1 & 2
  • Class leading air-flow at up to 980 cfm (1,666 m3/hr)
  • Ultra quiet - 74dB at 1 metre
  • Compact and lightweight - 12kg
  • Thermally protected cut-off switch
  • Durable, PC/ABS anti-static casing - weatherproof, dent resistant, v0 flame retardant and chemical resistant
  • Starter secured in flameproof motor enclosure to prevent risk of ignition when powered on
  • Extended reach power cable - 7.6 metres
  • IP55 water tight rain tested switch enclosure

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VF-UB20xx (115V)

Gas Zone: 1 and 2

Power: Lead

VF-UB20xx (230V)

Gas Zone: 1 and 2

Power: Lead

Technical Information

Product Reference VF-UB20xx (115V) VF-UB20xx (230V)
Product Description 20cm Hazardous Area Fan / Ventilator 

II 2 G Ex db eb IIB T6

Gb II 2 G Ex h IIB T6 Gb

Type of Protection

'd' flameproof

'e' increased safety

'h' non-electrical equipment

Area of Class (Gas) Zones 1 and 2, Gas Groups IIA and IIB
Max Surface Temp (Gas) T6
Ambient Temp. (Gas) -20°C TO +40°C

DEMKO 09 ATEX 0926969X

IECEx UL 13.0062X

Enclosure Anti-static PolycarbonateABS Alloy
Motor 0.33 Hp (0.25kW)
Voltage 115V 50/60Hz 230V 50/60Hz
Amps (Start/run) 7A / 2.3A 7A / 1.2A
Free Air Through Duct 980 cfm (1,666m³/hr) 816 cfm (1,386m³/hr)
15'/4.6m /w one 90° turn: 789 cfm (1,341m³/hr) 659 cfm (1,120m³/hr)
15'/4.6m /w two 90° turn: 666 cfm (1,132m³/hr) 558 cfm (948m³/hr)
25'/7.6m /w one 90° turn: 722 cfm (1,227m³/hr) 603 cfm (1,025m³/hr)
25'/7.6m /w two 90° turn: 614 cfm (1,044m³/hr) 510 cfm (867m³/hr)
Ingress Protection IP55
Dimensions (h/w/d) 35 x 35 x 39 cm
Weight 12kg
Duct Adapters 2
Noise 74db @ 1m


Download file - 20cm Fan & Ventilator Product Information Sheet
Download file - Ramfan Fan/Ventilator Instructions
Download file - Fan/Ventilator ATEX Certificate
Download file - Fan/Ventilator IECEx Certificate
Download file - Declaration of Conformity for Ventilation Products

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