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Grundfos 11 SQF-2 Submersible Solar SQFlex Pump

USD $2,199.00
- +
SKU:Grundfos 11 SQF-2
Availability: In stock
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. The SQFlex system is a reliable water supply system especially suitable for remote locations not connected to the electricity supply grid. The SQFlex system is equipped with …
Processing Time
Ships in 24 hours: Processing Time is guaranteed to be shorter than 24 hours.
Shipping Time
Expedited: 3-5 business days
Standard: 6-8 business days
We ship to over 200 countries worldwide!
new attributes
Manufacturer Grundfos

Dry-Running Protection: This unique feature shuts down the pump if it detects water shortage. Every SQFlex pump comes standard with this sensor pre-installed, protecting the well from being over-pumped and the pump from damage.

Helical Rotor Pump (3"): Designed to pump high levels very efficiently, these models allow pumping levels as deep as 820 ft. The 3 in. diameter allows the pump to go in installations where others can't.

Centrifugal Pump (4"): Based on Grundfos' 40 years of experience in submersible pumps, these models are capable of providing high flows, up to 80 gal/min, at moderate heads.

Materials: All Stainless steel for long pump life.

Motor: Only one motor size covers the entire pump range. Designed for peak efficiency and complete reliability, the motor features integrated electronics, eliminating the need for complicated external controls.

Motor Protection: Built in protections against over-temperature, overload, and over and under-voltage for reliability, as well as two-way communication with a control box to alert you in case there's a problem.

Any Voltage: The motor can operate under any voltage from 30 - 300 VDC and 90 - 240 VAC without additional controls, making sizing and installation easy, even as a retrofit to existing installations. AC power capabilities mean every SQFlex pump has the ability to use an AC generator for backup power.

Simple installation
Reliable water supply
Virtually no maintenance
Cost-efficient pumping every day!

Technical Data SQF Pump
Power supply to pump 30-300 VDC, PE.
1 x 90-240 V 10%/+6%, 50/60 Hz, PE.
Run-up time Depends on the energy source.
Start/stop No limitation to the number of starts/stops per hour.
Enclosure class IP 68.

Motor protection Built into the pump. Protection against
dry running by means of a water level electrode
overvoltage and undervoltage

Conductivity 70 s/cm (micro siemens).
Sound pressure level The sound pressure level of the pump is lower than the limiting values stated in the EC Machinery Directive.
Radio noise The SQF complies with the EMC Directive 89/336/EEC. Approved according to the standards EN 61000-6-2 and EN 61000-6-3.
Reset function The SQF can be reset via the CU 200 or by disconnecting the power supply for 1 minute.
Power factor PF = 1.
Operation via generator Voltage: 230 VAC 10%/+6%.
The generator output must be
minimum 1000 W (helical rotor pumps)
minimum 1500 W (centrifugal pumps).

Earth-leakage circuit breaker If the pump is connected to an electric installation where an earth-leakage circuit breaker (ELCB) is used as an additional protection, this circuit breaker must trip out when earth fault currents with DC content (pulsating DC) occur.
Borehole diameter 3 SQF, 6 SQF, 11 SQF: Minimum: 3 in.
16 SQF, 25 SQF, 40 SQF, 60 SQF: Minimum: 4 in.
Installation depth Minimum: The pump must be completely submerged in the pumped liquid. Maximum: 500 ft below the static water table (220 psi).
Suction strainer Holes of the suction strainer: 3 SQF, 6 SQF, 11 SQF: ø0.090 in.
16 SQF, 25 SQF: ø0.10 in.
40 SQF, 60 SQF: 0.16 in x 0.80 in.
Pumped liquids pH 5 to 9. Sand content up to 50 ppm.
Marking CE.
Note: Specifications and pricing of the Grundfos 11 SQF-2 SQFlex Solar Pump subject to change without notice. Illustrations and descriptions of the Grundfos 11 SQF-2 SQFlex Solar Pump do not claim to be complete. SQFlex pumps have a 1 year warranty from the date of purchase. A 5 year extended warranty is available separately.

Shipping costs are based on pricing, weight and extra cost on handing. International shipping costs for freight shipments calculated by the shopping cart are estimates only. Please contact us by phone, email or online chat to get quotation of freight fee and handling fee. Then you can choose to select shipping service and pay that  service by credit or wire.

If you have any questions, please click one of these options to contact us:

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  • Phone call: +1 (626) 575-8822

Use of site as well as purchase constitute consent and understanding of’s return policy. is not responsible for any fluctuation in the international currency exchange rate.  International customers will receive refunds equivalent to the USD (US dollar) price at the time of purchase.

No returns will be accepted without prior authorization and must include the authorized letter signed from ACOSolar in order to return product. Any product that is returned must be brand new, in perfect condition and packaged in the original manufacturer's packaging with all hardware and documentation. 25% of total payment will be charged if package has been ever opened.

No returns will be accepted on installed items. Returns must be shipped with prepaid freight and insured via the carrier of your choice within 30 days of delivery. No returns will be accepted beyond 30 days of original delivery. Shipping charges will not be refunded, unless, an error was made by ACOSolar in shipping.

Because of the customization involved, trackers, racking and mounting hardware is non-returnable.

All returns shall be subject to freight cost to a restocking fee.  

Please contact Customer Service at or 626-575-8822.

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