Product Guide

Product data
SQFlex
1
3
1. Product data
Introduction
The SQFlex system is a reliable water supply system
based on renewable energy sources, such as solar
and wind energy. The SQFlex system incorporates an
SQF submersible pump.
Very flexible as to its energy supply and performance,
the SQFlex system can be combined and adapted to
any need according to the conditions on the installation
site.
The system components are
• SQF submersible pump
• CU 200 SQFlex control unit
• IO 50 SQFlex switch box
• IO 101 SQFlex switch box
• IO 102 SQFlex breaker box
• charge controller
• energy supply:
– solar panels
– wind turbine
– generator
– batteries.
SQF submersible pump
The SQF pump range comprises two pump
technologies:
• the helical rotor pump (3") for high heads and small
flows.
• the centrifugal pump (4") for low heads and large
flows.
The performance curves in fig. 1 illustrates the pump
performance for the two pump models.
Fig. 1 Performance ranges for helical rotor and
centrifugal pumps
The SQF pump is available as a complete unit only.
The SQF pump complete comprises:
• motor
• 6 ft (1.8 m) cable with water level electrode and
socket
• cable guard.
Fig. 2 SQF pump
Currently the complete range consists of six centrifugal
pumps and five helical rotor pumps. The centrifugal
pumps are adapted from Grundfos’ present 4” SP
range (16S, 25S, 40S, and 60S). These pumps are
used when lower heads and higher flow rates are
required.
The positive displacement helical pump ends are
3” in diameter and available in five models ranging
from 3 to 11 gpm (0.68 to 2.50 m
3
/h). These are
designed for higher head and lower flow requirements.
The pump rotor is a single-twisted helix (spiral) made
of hard-chromium plated stainless steel. During
operation, the rotor rotates eccentrically in a double
helical elastic stator.
TM02 2425 3901
Q
H
A
B
A: Helical rotor pump
B: Centrifugal pump
/day
TM02 2217 3901
Pump type Pump size Product number
3 SQF 2 3" 95027332
3 SQF 3 3" 95027333
6 SQF 2 3" 95027334
6 SFQ 3 3” 96834840
11 SQF 2 3" 95027335
16 SQF 10 4" 95027350
25 SQF 3 4" 95027351
25 SQF 7 4" 95027353
40 SQF 3 4" 95027354
40 SQF 5 4" 95027355
60 SQF 3 4" 95027443