Allegro 20 Inch Explosion-Proof Fan
Product Overview
Product Description
Electric, explosion-proof motor is UL/CSA listed single phase motor and NEMA rated. 115V plug and 3 blade fan. Meets Class I, Division 1 and 2, Groups C & D, and Class II, Division 1 and 2, Groups F & G.
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GENERAL DESCRIPTION:
For use in applications requiring a large amount of output in a hazardous location environment. Allegro’s 20” (50.8cm) Explosion Proof blower is offered with a 1/2 HP Explosion Proof motor with an efficient 3-blade fan in a rugged metal housing. Certified to CSA Standard C22.2 No. 113.
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| Free Air | One 90° Bend | Two 90° Bends | ||
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| 4650 | 3150 | 2950 | ||
| 75 lbs. | 8.2A /4.1A/115/230V | |||
CONSTRUCTION:
- Complete unit epoxy powder coated in orange
- Interchangeable flange for intake or exhaust side mounting
- 16 gauge cold rolled steel housing
- Integrated carrying handles on four sides
- Steel grill (zinc plated)
- Equipped with four rubber feet
- Stackable design MOTOR: HP: 1/2 HP Certifications: UL Listed, CSA certified Voltage/Hz: 115/230V AC, 60 Hz, Single Phase RPM: 1725 Current Draw: 8.2/4.1A Cord: 25’ (7.62m) 12/3 AWG SJOOW 90C 300V medium duty Plug: NEMA 20 Amp plug, explosion proof rated.
MOTOR:
- HP: 1/2 HP
- Certifications: UL Listed, CSA certified
- Voltage/Hz: 115/230V AC, 60 Hz, Single Phase RPM: 1725
- Current Draw: 8.2/4.1A
- Cord: 25’ (7.62m) 12/3 AWG SJOOW 90C 300V medium duty
- Plug: NEMA 20 Amp plug, explosion-proof rated.
FAN:
- Anti-Static glass reinforced polyamide three blade fan with aluminum hub
- Moving fan mounted 1 5/8” (4.12 cm) from grill for safety, grill gap 5/16” (0.79 cm) DUCTING: (Accessory)
- Black single-ply, neoprene coated, statically conductive vinyl/polyester material, temperature resistant up to 250°F (121.1°C)
- Retractable, non-collapsible design. Class 1 hard drawn spring steel wire helix (meets ASTM 227 specs)
HAZARDOUS LOCATION RATING:
| Class: I |
Class: II |
| Divisions: 1 & 2 | Divisions 1 & 2 |
| Groups: C & D | Groups: F & G |
BLOWER DIMENSIONS:
| Length ln. (cm) | Width ln. (cm) | Height ln. (cm) | Weight Lbs. (Kg) |
| 19” (48.2 cm) | 22” (55.8 cm) | 22 ½” (57.1 cm) | 75 lbs. (34 kg) |
FLOW RATES: (CFM calculated using 15’ (4.75m) of 20” (50.8cm) ducting)
| Free Air CFM (m3 /hr) | One 90° Bend CFM (m3 /hr) | Two 90° Bends CFM (m3 /hr) |
| 4650 (7900.39) | 3150 (5351.88) | 2950 (5012.08) |
Key Features
- ✓Explosion-Proof Construction
- ✓High-Volume Airflow
- ✓Heavy-Duty Industrial Design
Common Applications
Worker ventilation
Provides fresh air circulation for tanks, vaults, manholes, and other confined work areas.
Hazardous location ventilation
Designed for facilities where combustible gases, vapors, or volatile atmospheres require explosion-proof equipment.
Fume extraction
Helps ventilate processing areas during maintenance, cleaning, and equipment servicing.
Handling & Storage
Safety Notes
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