Environmental Monitoring Equipment & Supplies • Sales, Rental & Service by Enviro-Equipment — Charlotte, North Carolina USA

  • Fits in 4" wells or larger.
  • Maximum flow rate of roughly 20 gallons per minute (GPM).
  • 100 feet motor lead length.
  • Stainless steel and teflon construction.
  • Variable Frequency Drive (VFD) controller allows for fine tuning flow speed.

NOTICE: Rental rates do not include controller, see accessories area for controller pricing.

Title Daily Rate Weekly Rate Monthly Rate
Grundfos Redi-Flo 4 100 Ft. Pump Rental $75.00 $190.00 $540.00

The Grundfos Redi-Flo 4 is a variable speed submersible pump used for groundwater sampling and purging in 4-inch wells or larger. The redi-flo 4 is constructed out of stainless steel and teflon. It is capable of pumping 20 GPM at roughly 100 feet of head. The Redi-Flo 4 controller can be powered by either 115V or 230V AC power. The default set-up for rental units is 115V AC.

Items Included:
  • Grundos Redi-Flo 4 Pump
  • 100 ft. Cable
  • Hose Clamp
  • 1" Hose Barb
  • Carrying Case
  • Instruction Manual

Pump Curve

Motor Lead Length

100 Feet

Horse Power

0.75 HP

Service Factor





230 volts

Overall Length

23.25 inches

Motor Length

11.375 inches

Pump End Length

11.875 inches

Max Diameter

3.969 inches


3.25 inches

Discharge Size

1.25 inches NPT


27 lbs

Maximum Operating Temperature

104°F (40°C)

Maximum Submergence Pressure

220 PSI

Maximum Number of Starts Per Hour


Minimum Recommended Flow Past Motor

0.25 ft/sec

Grundfos Redi-Flo 4 Pump User Manual148.3 KB