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3924 East Trent Avenue | Spokane, WA 99202
1-800-745-3282 | Fax: 509-535-9064
DS Series Positive Pressure Ventilation (PPV) Fans

DS Series Positive Pressure Ventilation (PPV) Fans


The DS series positive pressure ventilation (PPV) fans feature high performance Honda motors, stainless steel frames, are tiltable from -10° to +20°, open shroud design, and are stand alone operational.


DS Model Fans' Specifications

Model Number CFM Engine Dimensions Propeller Weight List Price  
DS-3 8,000 Honda GX 120, 118 CC
(7.2 cu in)
21.5" X 20" X 17"
H X W X D
18" / 2 Blade 53 lbs. $1,808.00 Add To Cart
DS-3P4 14,885 Honda GX 160, 163 CC
(9.9 cu in)
23" X 23" X 17"
H X W X D
18" / 4 Blade 66 lbs. $1,995.00 Add To Cart
DS-3P4L** 14,885 Honda GX 160, 163 CC
(9.9 cu. in.)
23" X 23" X 17"
H X W X D
18" / 4 Blade 70 lbs. $2,260.00 Add To Cart
DS-9P4 17,500 Honda GX 270, 270 CC
(16.5 cu in)
25" X 24.5" X 21"
H X W X D
20" / 4 Blade 100 lbs. $2,552.00 Add To Cart
DS-13 22,000 Honda GX390, 389 CC
(23.7 cu in)
30" X 28" X 24"
H X W X D
24" / 4 Blade 129 lbs. $2,943.00 Add To Cart

**Fan comes with battery powered smoke cutting light that recharges from the motor.

Standard DS Series Specifications

Engine:
  • Electronic ignition w/ lifetime warranty
  • Dual element air cleaner
  • Auto oil alert
  • Decompression
  • Factory 2 year warranty
Propeller:
  • Built in one piece hub.
  • Unitron synthetic
  • Carbon reinforced
  • Impact resistant
  • 100% waterproof
  • Limited Lifetime warranty
Frame:
  • Upper Frame made with 3/4" 304-S Stainless Steel, .065 guage
  • Lower Frame made with 1" 304-S stainless steel, .065 gauge
  • Arc Angles
  • 50° - Front legs
  • 20° - Back legs
  • Chemical and rust resistant
  • Grade 5 or better hardware
  • Oil impregnated bushings on pivots
  • 5 year warranty
Tilt Position:
  • 30 positions from -10° to +20°
  • Spring loaded friction lock with splined inner locking gear
  • Rotating handle for ease of use
  • Zinc plated friction lock tiltling lever
  • Adjustable friction between upper and lower frames
Suspension:
  • Arc design with integral suspension
  • Balanced & matched rubber feet
Shroud:
  • Complete shroud is Osha approved
  • 2 piece open shroud design
  • Vinyl Coated
  • 3/16" diameter outside wrap
  • 1/4" diameter inside supports
  • Easy to remove front shroud without special tools
Engine Protection:
  • 360° roll protection
  • Upper frame offers overhead engine protection
Obstacle Clearance:
  • Lower frame offers 6.75" clearance on sides
  • Lower frame offers 5" clearance on back
Drive Type:
  • Direct drive, approved by engine manufacturer
Hub Type:
  • 1 piece machined zinc plated steel
  • 1 shear key
  • 2 set screws
  • 5/16" crank bolt w/washer
  • Built into the Unitron blade as one piece.
Seal Distance:
  • Seals a standard doorway from 4 - 8 feet
Warranty:
  • Propeller: Limited Lifetime warranty
  • Frame: 5 year warranty on frame
  • Engine: 2 year factory
Options:
  • Patented water misting system
  • Hold down brackets

DS Series Positive Pressure Ventilation (PPV) Fan Features

  • Direct Drive
    • All Unifire positive pressure ventilation (PPV) blowers feature a direct drive design. By being direct drive we essentially gain 10% power transfer from the motor to the blade over belt driven models.
  • Shatter Proof Unitron Blade
    • 100% shatterproof, high heat thermal plastic. Made of synthetic nylon, reinforced with carbon fibers. Impact and stress resistant with the best thermal expansion and contraction available.
  • Stand Alone Operation
    • Unifire positive pressure ventilation (PPV) fans and blowers are vibration free for standalone operation. They will not move on wet or slick surfaces. This is accomplished through balanced weight distribution and many other factures that help eliminate vibration.
  • Stainless Steel Wrap Around Frame
    • Lightweight yet strong stainless steel frame provides 360° roll protection. The low arc design evenly distributs weight to all four legs and feet for vibration free operation.
  • Patented Friction-Lock Tilt Lever
    • The friction-lock tilt lever allows for fast and easy adjustment to any angle from -10° to +20°. This enables the operator to pinpoint airflow and create the prefect seal.
  • Reliable Honda Engines
    • All the features you expect from Honda; electronic ignition, oil alert system, dual element air filtration system, and electronic ignition for easy starting.
  • Open Shroud Design
    • The open shroud design allows for 20% more air flow and allows for better channeling of air. There is also faster sealing and greater thrust through the air cone because the air is pulled fom the back, sides and tips of the unitron blade.
  • Compartment Sized
    • These are the most powerful compact positive pressure ventilator (PPV) fans and blowers available. Most of our models fit standard compartments and are lightweight for easy handling.
  • Rubber Feet
    • Rubber feet aid the elimination of movement due to vibration.

Parts and Accessories

Item Number Description List Price
K-H2O Watermist Kit (You Install) $441.00
F-H2O Watermist Kit (Factory Installed) $497.00
K-H2O-T Watermist Kit, T-Model Frames (You Install) $420.00
F-H2O-T Watermist Kit, T-Model Frames (Factory Installed) $441.00
H2O-R Watermist Ring $273.00
 
WPC Water Proof Fan Cover $177.00
WL Pneumatic Wheels (Black) $165.00
WHL-GRAY Gray Wheel Kit $144.00
HNDL T-Handle Assembly $187.00
 
UF20-15 20" X 15' Vinyl Polyester Ducting $607.00
UF20-25 20" X 25' Vinyl Polyester Ducting $783.00
UF22-15 22" X 15' Vinyl Polyester Ducting $607.00
UF22-25 22" X 25' Vinyl Polyester Ducting $783.00
 
FS20 20" Full Shroud $243.00
FS22 22" Full Shroud $254.00
FS26 26" Full Shroud $275.00
FS32 32" Full Shroud $277.00
 
U-18SP 18" Unitron 2-Blade Blade Prop $387.00
U-20SP 20" Unitron 2-Blade Blade Prop $387.00
U-22SP 22" Unitron 2-Blade Blade Prop $595.00
 
U-18P4 18" Unitron 4-Blade Blade Prop $551.00
U-20P4 20" Unitron 4-Blade Blade Prop $579.00
U-22P4 22" Unitron 4-Blade Blade Prop $5606.00
 
RETRO Retro Kit $34.00
 
EXH-2 Deluxe Exhaust Kit, 2" X 9' $221.00
 
EXH-3 Low Emissions/Clean Air Muffler Conversion $750.00
 
BSB Back Shroud Bolt $1.60
BSW Back Shroud Washer $0.55
 
CBN Crankshaft Bolt $3.15
CW Crankshaft Washer $0.55
 
EMB Engine Mount Bolt $2.65
EMN Engine Mount Nut $0.55
EMW Engine Mount Washer $0.55
Item Number Description List Price
FB Frame Bolt $1.60
FN Frame Nut $0.65
FW Frame Washer $0.55
 
F-UG Frame Upgrade $1,378.00
F-UG-DST Frame Upgrade DST Models $1,600.00
 
FLA Friction Lock Assembly $138.00
FLW Friction Lock Washer $1.60
FSW Friction Shroude Washer $0.55
 
K Knob (Black), For Tilt Adjustment $7.50
 
MG Muffler Guard $66.00
HAF5 Honda Air Filter $34.00
HD Honda Dipstick $12.00
GAS CAP Honda Gas Cap $7.00
 
LF Lower Frame $304.00
UF Upper Frame $1,020.00
 
UW Urethane Washer (Red) $1.50
MB Mounting Bracket $99.00
NS Nutsert $2.50
OIB Oil Impregnated Bushing $5.25
 
POP PIN Pop Pin for Adjustable Handle $12.15
PB Prop Bolt $2.50
PN Prop Nut $0.55
PT Protective Tape (For use with wood props) $7.50
 
RFS Rubber Feet Soft (For use with fans up to 6.5 HP) $13.75
RFH Rubber Feet Hard (For use with fans up to 8 HP and larger) $13.75
 
SS Set Screw $0.55
SK Shear Key $2.50
SWN Shroud Wing Nut $2.50