Factory Authorized Distributor Repair & Warranty Center
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DuroFlow 4509

Item # 4509
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DuroFlow 4509 positive displacement blower & vacuum pump with various shaft configurations to suit your specific application. 4509 VT blowers are built to the standards and exhaustively tested to meet strict performance criteria to ensure unequaled service life under the most severe operating conditions. Your Gardner Denver Duroflow blower is supported Blocker and Wallace Service trained professionals and backed by a manufacturer’s 18 /12 month warranty.

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Click here to find out the drive shaft configuration of your duroflow blower view our drive shaft configuration tool. 

Drive Shaft Configuration-4509 :

For nearly fifty years, DuroFlow® positive displacement blowers/vacuum pumps have combined leading-edge technology and on-the-job experience to continuously deliver enhanced designs and improved performance.

Looking for a different model number Duroflow?  Click here to view the complete line of duroflow blowers and vacuum pump.

DuroFlow Industrial Series

· Heavy-duty design

· Proven performance and dependability

· Dual Splash Lubrication (DSL) for continuous operation

· Backed by local network of sales and service professionals

· Flex-Mount design, vertical or horizontal mounting

· Oil-free air distribution

· Superlative for a wide range of applications


Performance Data:

Vacuum up to 16 inches HG
Pressures up to 15 PSIG

Delivers Air Flow up to 1,875 CFM

Performance data shown is based on standard conditions, for performance and blower sizing inquires please contact Blocker & Wallace Service LLC.



  • Each model delivers clean, oil-free air to a wide range of industrial applications
  • Dual splash oil lubrication on the drive and gear end.
  • Horizontal or vertical mounting configuration available for each blower.
  • Oversized bearings for added support and greater durability.
  • Innovative rotor/shaft design machined from a single, ductile iron casting.
  • Solid rotors with serrated sealing tips to improve efficiency.
  • Progressive porting aids in noise reduction.
  • Helical timing gears, precision machined from alloy steel forgings.

Manufactures Warranty: 12 months from date of installation or 18 months from date of shipment

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Blocker & Wallace Service LLC has been a leading Gardner Denver Factory Authorized Distributor, Repair, & Warranty Center for over 27 years. We have a over 100 years of combined experience in the Pneumatic conveying Industry specializing in new & remanufactured PD blower sales, system design, consulting, blower packaging & blower repair. We have been recognized by Gardner Denver as a top distributor and have received multiple distributor achievement awards on sales and service since 1983.   We are on of the only distributors authorized to market and repair the majority of PD blower lines owned or operated by Gardner Denver.


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