Product Description

DuroFlow 4509 Blower

The Gardner Denver Duroflow Positive Displacement Blower series is equivalent to the Roots-Flo series.  pdblowers is a distributor and agent for Roots, the top manufacturer of positive displacement blowers.  We offer repair and replacement services for the Duroflow 4509 blower. Click here to learn more about Duroflow 4509 blower repair.

The Roots drop-in replacement for a Duroflow 4509 is the Roots-Flo 409, although it is always recommended to check your specific performance requirements when selecting a blower.

A basic comparison of specs is below; for more information or to buy online, click here for the Roots-Flo 409 blower.

DuroFlow 4509 vs Roots-Flo 409

Duroflow 4509 RootsFlo 409
Flow Range: to 919 CFM to 900 CFM
Max Δ Pressure: 15 psi 15 psi
Max Δ Vacuum: 16″ Hg 16″ Hg
Maximum RPM: 4000 4000
Minimum RPM: 850 850
Max ΔT: 275˚F
Connection: 4″ FPT 4″ or 5″ FPT
Shaft Dia.: 1.44″ 1.44″
Drive End Lubrication: Oil Oil
Gear End Lubrication: Oil Oil
Required Oil for Horizontal Unit: 55 ounces 50 ounces
Required Oil for Vertical Unit: 29 ounces 30 ounces
Recommended Oil: Aeon PD Roots Synthetic
Unit Weight: 260 lb 280 lb


DuroFlow Model Numbers
Model numbers consist of up to 11 characters and will be stamped on a nameplate on the blower.

Standard 4509 model numbers: GGDCADA, GGDCBDA, GGDCCDA, GGDCDDA

DuroFlow model number chart