QUALITYProducts.
SINCE 1948.

• All-Welded Steel Construction
  Withstands harsh industrial conditions and ensures long-term durability.
• Direct-Drive Configuration
  Eliminates belts and pulleys, simplifying maintenance and improving energy efficiency.
• High-Efficiency Airfoil Propellers
  Cast aluminum, non-overloading airfoil blades move air effectively with minimal noise or turbulence. Conventional flat blades cause excessive air turbulence which results in motor overloads and poor acoustic performance.
• Multiple Motor Options
  Standard (Totally Enclosed, Hazardous Location) and non-standard (Chemical Duty, 50 Hz, Arctic Duty, IEEE 841, ECM) configurations to match diverse environments.
• Rugged Weather Protection
  Heavy-gauge windband, curb base, and reinforced components for reliable performance in any climate.
• Proven Heritage
  Backed by more than 70 years of Triangle Engineering’s innovation and expertise.

Sizes & Models (24″–72″)

• Standard Blade Diameters: 24″, 30″, 36″, 42″, 48″, 54″, 60″, 72″
  (Consult factory for larger diameters)
• Airflow Range: up to 90,000 CFM (contact us for larger airflow requirements)
• Horsepower: Up to 25 HP (contact us for higher horsepower requirements)

Standard Motor Types, Voltages & Controls

• Standard Motor Options: Totally Enclosed (TE), Hazardous Location (HL)
• Non-Standard: Chemical Duty, 50 Hz, Arctic Duty, High Ambient, IEEE 841, Electronically Commutated (ECM), etc.
• Standard Voltages:
  • Single-Phase: 115V, 230V
  • Three-Phase: 230V, 460V
  • (Additional options: 277V, 208V, 415V, 575V)
• Motor Control: Consult factory for motor compatibility with Variable Frequency Drives (VFD’s)

Operating Range

• Temperature: Handles up to 110°F (contact us for higher-temp motors)
• Static Pressure: Refer to performance tables for model-specific capabilities

Construction & Finish

• Housing: Heavy-gauge, all-welded steel for structural integrity
• Polyester Powder Coat Finish: Resists corrosion, extends product life
• External Bracing: Reinforces larger units to prevent sagging and vibration
• Internal Bracing: Adds extra structural support
• Rain Channel: Directs rainwater away from the fan onto the roof

Additional Construction Details

• Curb Base: Heavy-gauge galvanized sheet steel, all-welded for long, maintenance-free service
• Windband: Galvanized steel with formed reinforcing ribs, braced to protect against weather and crosswinds
• Throat: Deep venturi-type orifice riveted to a galvanized steel inner throat for quieter, more efficient operation
• Butterfly Dampers: Automatically open when powered on and close via gravity to prevent backdrafts; bumper stops aid closure
• Damper Bearings: Sintered bronze-oil bushings on rustproof rods, located outside the airstream for friction-free operation
• Neoprene Bumper: Creates a tight damper seal, prevents freezing in cold conditions, and dampens noise as lids close
• Lifting Lugs: Facilitate easier rigging and safer rooftop installation

Mounting & Installation

• Motor in Airstream: Simplifies servicing and inspection
• Integral Butterfly Dampers: Minimize energy loss by reducing backdrafts when fan is off

Explore a range of add-ons and design modifications to further enhance functionality, reliability, and ease of maintenance. Whether you need additional weatherproofing, improved service access, or robust safety features, our suite of accessories ensures the JD Series meets the unique demands of your industrial environment.

• Disconnect Switch: UL-listed, prewired switch for on-site safety
• Magnetic Latches: Help prevent butterfly damper uplift due to high winds
• VFD Ready: Premium Efficiency Inverter-Rated Motor
• Shaft Grounding: Minimizes bearing wear from stray electrical current

When it comes to keeping diverse work environments safe, comfortable, and compliant, the JD Series Direct Drive Upblast Exhaust Fan delivers consistent performance across many industrial and commercial sectors. From busy manufacturing floors to demanding utility rooms, these fans provide robust, efficient ventilation wherever it’s needed most. Below are several examples of applications that can benefit from the JD Series’ rugged design and minimal-maintenance advantages.

• Manufacturing Plants: Remove fumes, heat, and particulates for a safer workspace
• Warehousing & Distribution: Sustain fresh air exchange in large, busy buildings
• Foundries & Metalworking: Vent smoke, dust, and heavy industrial byproducts
• Power & Utility Rooms: Ensure proper cooling of electrical equipment
• Beverage & Food Processing: Maintain sanitation standards by controlling humidity and odors

1. Reliability: With robust construction and direct-drive efficiency, downtime is minimized.
2. Superior Performance: Non-overloading airfoil blades deliver steady, high-volume airflow.
3. Minimal Maintenance: No belts to adjust or replace, reducing service intervals.
4. Flexible Customization: Tailor horsepower, voltage, and optional accessories to meet specific site needs.
5. Decades of Expertise: Triangle Engineering’s proven track record in industrial ventilation stands behind every unit.

Complement or extend your ventilation system with these premium solutions:

• HHC Series Hooded Fans
  • Weather-resistant hooded exhaust fans designed for roof or wall mounting.
• JBI Series Belt Drive Roof Mount Exhaust Fan (motor in airstream)
  • Ideal for general ventilation where the motor can be positioned in the air stream for effective cooling
• JBX Series Belt Drive Roof Mount Exhaust Fan (motor out of airstream)
  • Keeps the motor separate from harsh or contaminated airflows, extending motor life.
• FHI Series Panel Exhaust or Supply Fan
  • Severe duty panel exhaust or supply fan, available in direct drive or belt drive configuration and designed for harsh environments
• Shutters/Dampers
  • Offered in standard sizes or custom increments (as small as 1/8″) to fit your opening. They regulate airflow, limit backdraft, and maintain optimal building pressure when the fan is off.

We understand every project has distinct ventilation challenges. Beyond our standard JD Series offerings, our team is available to work with you to fine-tune specific performance, material, and site specific criteria. Whether you require specialty finishes, enhanced components for high temperatures, or specific airflow targets, our engineering team is prepared to deliver a tailored JD Series configuration.

Custom Airflow Targets

We’ll identify the ideal propeller or blade design to meet your specific static pressure and performance needs, ensuring optimal airflow and efficient operation for your application.

High-Temperature Applications

Upgrade components and materials to withstand extreme operating conditions, factoring in reduced air density at high temperatures. We’ll also adjust propeller selection as needed to maintain proper airflow and performance.

MATERIAL OPTIONS

CHOOSE FROM STANDARD STEEL, ALUMINUM, OR STAINLESS STEEL FOR ENHANCED CORROSION RESISTANCE OR LIGHTER WEIGHT.

Have additional requirements? Looking for a unique finish or custom mounting configuration? Our experts can help you explore all possible solutions to fit your exact needs.