Water Pumps
Micro H Turbines

GREC offers a full range of pumps from Grundfos.

Deep well submersible pumps AC/DC

Home water supply pumps

Circulating pumps


Founded in 1949,

 Grundfos Pumps Corporation, is one of the world's largest manufacturers of pumps, providing pumps for homes, farms, commercial buildings and industrial uses.

Product Types:

  Submersible Pump

Submersible pumps can lift up to 650 feet and can provide as much as 15,000 GPD.

Any of our submersible pumps will fit in a 4" or larger well casing.

The SQFlex Submersible Pump can operate directly off solar panels, wind turbines or AC power source.

If you need it, GREC can provide it!

The complete SQFlex pump range
consists of 7 different pump sizes: 4 centrifugal and 3 helical rotor pumps. All pumps are fitted with the same size motor which, together with the new sizing tools, makes system sizing simple


  • 3 SQF-2
  • 6 SQF-2
  • 11 SQF-2
  • 25 SQF-3
  • 25 SQF-6
  • 40 SQF-3
  • 75 SQF-3 Pump Type
  • Helical Rotor
  • Helical Rotor
  • Helical Rotor
  • Centrifugal
  • Centrifugal
  • Centrifugal
  • Centrifugal

Grundfos SQFlex Submersible Pump

Deep well submersible pumps AC/DC powered by wind-solar or grid power

Detail PDF


Submersible Constant Water Pressure System

for 3-Inch or Lager Wells

Details PDF

SQFlex Controllers

Control Unit - the "brain" of the system lets you specify your preferred water pressure, make manual

 adjustments for special needs, and tells you when the system is boosting pressure. All with a simple, user-friendly design!

IO 100 / IO 102

IO 100
A very simple and easy-to-use system and with cable interface. Controlled by a manual on/off switch.
IO 101
Acts as interface for powering back-up supplies, providing automatic change-over. For instance when changing from generator to solar energy, the solar panels automatically power the system as soon as the fuel tank runs dry.


CU 200

A user-friendly interface box that maintains two-way communication with the pump

 and monitors the operating conditions. Built-in diagnostics indicate faults and dry-running, display operating status power consumption and level switch input.


SQFlex Water Level Switch

 Level Switch

Save energy as you save water. With a level switch inside the storage tank connected to the CU 200 control unit, the pump knows when the tank is full and shuts itself off.

Grundfos Web-site