The Wolf Safety VF-RV760S, VF-RV760, and VF-RV1500 Pneumatic Venturi Cone Air Movers (engineered in partnership with Ramfan™) represent the ultimate intrinsically safe ventilation and degassing solution for volatile hazardous atmospheres. A defining advantage of the Venturi design is that it operates WITH NO ELECTRICAL POWER AND HAS NO MOVING PARTS—eliminating electric motors, impellers, and bearings. This 100% mechanical simplicity completely eradicates friction and electrical sparking hazards, making the units certified inherently safe for installation in the most critical hazardous zones, including Zone 0, Zone 1, and Zone 2.

The air mover operates on the proven Venturi principle of air amplification: a small volume of high-pressure compressed air (or saturated steam) is injected through a specialized annular orifice ring. As the compressed air exits the nozzle at high velocity, it creates a powerful low-pressure vacuum zone at the base inlet, inducing large ambient air volumes (up to tens of times the input air volume) and discharging a massive stream of air through the expanding diffuser horn.

This product family offers three distinct models tailored to diverse site requirements:
- VF-RV760S (Short Cone): Features a compact, shortened diffuser cone designed for effortless portability and installation in tightly confined spaces, small manholes, or low-overhead tanks.
- VF-RV760 (Standard Cone): The industry-standard workhorse offering a perfect balance between size and high air displacement, delivering up to 1,442 cfm (2,450 m³/h) while consuming minimal compressed air (~31 cfm at 80 psi).
- VF-RV1500 (High Capacity): The heavy-duty, high-output variant engineered to deliver an immense airflow of up to 3,160 cfm (5,369 m³/h) at 80 psi, ideal for rapid degassing and purging of large-capacity storage tanks or long duct networks.

The horn diffusers are precision-molded from high-strength, carbon-filled static-dissipative polymer. This material safely discharges static charges to ground, resists mechanical crush impacts, withstands severe weather, and remains impervious to aggressive industrial chemicals and solvents. Heavy-duty aluminum or stainless steel bases provide rugged structural integrity.

Extremely lightweight with molded ergonomic handles and standard quick-connect air inlets, the Wolf Safety VF-RV760S, VF-RV760, and VF-RV1500 air movers are essential equipment for offshore oil & gas platforms, petrochemical refineries, chemical tankers, mining tunnels, fuel storage maintenance, and hazmat emergency response teams.

• Manufacturer: Wolf Safety Lamp Company Ltd (In partnership with Ramfan™)
• Product Line: Pneumatic Venturi Air Mover / Air Horn
• Model References:
  - VF-RV760S: Short Cone Venturi Version
  - VF-RV760: Standard Cone Venturi Version
  - VF-RV1500: High Capacity Venturi Version
• Operating Principle: Venturi Air Amplification (No moving mechanical parts)
• Power Source: Industrial Compressed Air or Saturated Steam
• Explosion Protection Rating: ATEX & IECEx Certified (Intrinsically Safe for Zone 0, Zone 1, Zone 2)
• Operating Air Pressure Range: 40 psi to 140 psi (2.7 bar to 9.6 bar) - Optimal at 80 psi (5.5 bar)
• Airflow Output & Compressed Air Consumption (@ 80 psi / 5.5 bar):
  - VF-RV760S: Airflow ~1,250 cfm (2,123 m³/h) | Air Consumption ~29.5 cfm (50 m³/h)
  - VF-RV760: Airflow ~1,442 cfm (2,450 m³/h) | Air Consumption ~31.2 cfm (53 m³/h)
  - VF-RV1500: Airflow ~3,160 cfm (5,369 m³/h) | Air Consumption ~73.5 cfm (125 m³/h)
• Base / Flange Diameter:
  - VF-RV760S & VF-RV760: 18.5 cm (7.3 inches) - Fits standard API 6" tank openings
  - VF-RV1500: 30 cm (12 inches) - Fits standard API 10" / 12" tank openings
• Air Inlet Connection: 1/2" NPT (Female)
• Housing Material: Conductive Static-Dissipative Polymer (Crush proof, chemical resistant, flame retardant)
• Base & Nozzle Material: Cast Aluminum alloy
• Grounding Protection: Integrated static grounding cable attached to chassis
• Overall Length:
  - VF-RV760S: ~42 cm
  - VF-RV760: ~84 cm
  - VF-RV1500: ~106 cm
• Net Weight:
  - VF-RV760S: ~2.8 kg
  - VF-RV760: ~4.1 kg
  - VF-RV1500: ~8.6 kg