Description
Flow Range: to 601 CFMMax Δ Pressure: 18 psi
Max Δ Vacuum: 16" Hg
Maximum RPM: 4000
Minimum RPM: 850
Max ΔT: 240˚F
Connection: 4” FPT
Shaft Dia.: 1.5”
Drive End Lubrication: Oil
Gear End Lubrication: Oil
Required Oil for Horizontal Unit: 55 ounces
Required Oil for Vertical Unit: 27 ounces
Unit Weight: 300 pounds (136.4 kg)
Shipping Container: Skid
Documents
Specifications
Performance Curves
- 406 ROOTS™ RAM™ WHISPAIR™ Pressure Performance Curve
- 406 ROOTS™ RAM™ WHISPAIR™ Vacuum Performance Curve

