Factory Authorized Distributor Repair & Warranty Center
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Duroflow 4504

Item # 4504
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DuroFlow 4504VT blower including the inlet and outlet port gaskets.  The inlet and outlet port flanges are sold separately, click here to purchase the 4" port flanges. 
DuroFlow® 4500 series positive displacement blowers & vacuum pumps have combined leading-edge technology and on-the-job experience to continuously deliver enhanced designs and improved performance. DuroFlow 4500 Series product line offers are various rotor lengths including 4504, 4506, 4509, 4512, & 4518 along with various shaft configurations to suit you specific application.  Gardner Denver products supported by a worldwide network of trained professionals and backed by a manufacturer’s 18 /12 month warranty. 
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Drive Shaft Configuration - 4504(Required) :

DuroFlow 4504VT Blower & Vacuum Pump 

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.


DuroFlow Industrial Series

· Heavy-duty design

· Proven performance and dependability

· Dual Splash Lubrication (DSL) for continuous operation

· ISO 9001 quality standards

· 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


Estimated Weight (lbs) 190

Maximum RPM 4,000 
Drive shaft diameter (in).  1.4375
Performance Data:

Pressure to 15 PSIG

Vacuum to 16” HG

Air Flow / CFM Range to 1875 CFM

13 Models available

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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Duroflow Warranty information

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Our mission is to provide businesses with the equipment and training they need to create Eco friendly operations.
Green Initiative

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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