Allegro Jet Fans — High-Volume Compressed Air Ventilation for Industrial Environments
The Allegro Jet Fan is a heavy-duty aluminum compressed-air-powered ventilation fan designed for demanding industrial applications including shipyards, manufacturing facilities, utilities, and general industrial worksites. Available in 20" and 24" models, these fans deliver up to 10,500 CFM or 16,000 CFM respectively at 100 psig, providing rapid air movement without the need for electrical power. The unit can function as either a blower or exhaust fan by simply reverse mounting, making it a versatile solution for confined space ventilation and atmospheric hazard control.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | ALLEGRO |
| Country of Origin | United States |
| UPC (9518-20) | 741851951935 |
| Applications | Shipyard, Industrial, Manufacturing, Utilities |
| Power Source | Compressed air |
| Fan Material | Heavy-duty aluminum |
| Fan Shaft Material | Stainless steel |
| Max CFM — 20" Model | 10,500 CFM (17,840 m³/hr) at 100 psig (6.9 Bar) |
| Max CFM — 24" Model | 16,000 CFM (27,184 m³/hr) at 100 psig (6.9 Bar) |
| Inlet Connector — 20" Model | 3/4" side-mounted |
| Inlet Connector — 24" Model | 1" side-mounted |
| Spark Resistance | Yes |
| Safety Screens | OSHA standard safety screens included |
| Bearings | Heavy-duty ball bearings, permanently lubricated and sealed |
| Flange Compatibility | Designed to fit standard API tank openings |
Available Sizes
| Item # | Description | Size (Depth x Diameter) |
|---|---|---|
| 9518-20 | 20" Jet Fan | 9 7/8" x 24 3/4" diameter |
| 9518-24 | 24" Jet Fan | 11 3/4" x 32 3/4" diameter |
Unlike electrically powered fans, the Allegro Jet Fan operates entirely on compressed air, eliminating electrical maintenance concerns and making it suitable for use in environments where electrical ignition sources must be avoided. Its dual-function blower/exhaust capability and API tank flange compatibility set it apart from standard portable ventilation equipment, giving contractors a single tool that adapts to multiple ventilation configurations on the same jobsite.
Key Features & Benefits
Compressed Air Operation — No Electrical Maintenance
Powered entirely by compressed air, the Jet Fan eliminates the electrical components that typically require ongoing maintenance. For contractors working in remote, hazardous, or electrically restricted environments, this means fewer failure points and reduced downtime.
Dual Blower/Exhaust Function
The fan can be reverse-mounted to switch between blowing fresh air in and exhausting contaminated air out. This flexibility allows a single unit to serve multiple ventilation roles across different stages of a job without additional equipment.
Spark-Resistant Construction
The spark-resistant design makes the Jet Fan appropriate for use in environments where flammable vapors or gases may be present. This is a critical safety feature for shipyard, tank, and industrial applications where ignition risk must be minimized.
Permanently Lubricated, Sealed Ball Bearings
Heavy-duty ball bearings are permanently lubricated and sealed for the life of the fan, reducing maintenance requirements and extending service life in harsh field conditions. Contractors can deploy the fan repeatedly without bearing servicing.
Stainless Steel Fan Shaft
The stainless steel shaft eliminates internal rust, preserving mechanical integrity even in humid, wet, or corrosive environments common in shipyard and industrial settings. This contributes directly to the fan's long service life.
API Tank Flange Compatibility & OSHA Safety Screens
The unit's flange is designed to fit standard API tank openings, enabling direct installation on storage tanks without adapters. OSHA standard safety screens are included, supporting compliance with workplace safety requirements.
Recessed Handles for Portability
Recessed handles allow the fan to be carried or rolled to the work area, making repositioning quick and practical on large or multi-level jobsites.
Common Applications
Shipyard Ventilation
Provides high-volume air movement in ship holds, tanks, and confined spaces where compressed air is readily available and electrical equipment may be restricted.
Industrial Confined Space Entry
Delivers rapid atmospheric purging and fresh air supply for confined space entry operations in manufacturing and utility environments, supporting worker safety protocols.
Tank and Vessel Ventilation
The API-compatible flange allows direct mounting to standard tank openings for efficient purging or exhaust of storage vessels prior to inspection or maintenance.
Manufacturing Facility Ventilation
Moves large volumes of air through production areas, helping to control fumes, heat, and airborne contaminants in manufacturing environments.
Utility Worksites
Suitable for utility applications where portable, high-CFM ventilation is needed and compressed air infrastructure is already in place.
Compatible Materials
- Environments with flammable or explosive vapors (spark-resistant construction)
- Standard API tank openings
- Confined spaces requiring fresh air supply or exhaust ventilation
- Industrial and shipyard atmospheres
Frequently Asked Questions
Q: Can the Jet Fan be used as both a blower and an exhaust fan?
A: Yes. The fan can be reverse-mounted to function as either a blower or an exhaust fan, providing flexibility for different ventilation requirements on the same jobsite.
Q: What air pressure is required to achieve rated CFM performance?
A: Rated airflow of 10,500 CFM (20" model) or 16,000 CFM (24" model) is achieved at 100 psig (6.9 Bar) of compressed air supply pressure.
Q: Do the bearings require periodic lubrication or maintenance?
A: No. The heavy-duty ball bearings are permanently lubricated and sealed for the life of the fan, requiring no routine bearing maintenance.
Q: Is the fan compatible with standard API tank openings?
A: Yes. The unit's flange is specifically designed to fit standard API tank openings, allowing direct installation without additional adapters.
Q: Are safety screens included with the fan?
A: Yes. OSHA standard safety screens are included with the fan.