FlexExtend High Flow

All the features of the FlexExtend with double the flow! The High Flow FlexExtend allows users to extend the lift of their surface pump to depths of up to 165ft, with up to double the flow rate of the original FlexExtend.
Flow Rate
Total Head
Suction Depth
Efficiency
26.5 GPM
Up to 165 ft
Up to 165 ft
Up to 85%

Warranty

A five-year, comprehensive warranty period makes the FlexExtend the first pump of its kind to guarantee a lasting service that, unlike other submersible pump warranty periods, accounts for unpredictable, real life usage.

High Flow Rate

Higher flows at lower overall cost when compared with other submersible pumps on the market. This is the result of the versatility, durability and high efficiency that a FlexExtend promises, alongside its highly competitive retail price.

Lift & Distribute

Lift water and distribute it separately with just one pump; as simple as turning a tap.

Versatile Water Levels

Dry-run and varying water level compatible, allowing for a versatility of water levels that is unparalleled by any other submersible pump on the market.

Water Quality

Pumps sandy, silty, and gritty water without damaging the pump mechanism, making the FlexExtend perfect for rural water supplies, where water quality is less consistent and other submersible pump technologies are unable to cope.

Maintenance

Easily user maintained, with no electronics.

Compatibility

Compatible with almost any surface pump meaning users can switch surface pumps as and when they need, minimising downtime.

The FlexExtend represents a fundamentally different approach to water pumping, using a hydraulic ram principle to achieve deep water lift without relying on submerged motors or electronics. Instead of placing an electric pump down the well, the system is powered hydraulically by a surface pump, which drives water through the FlexExtend unit below. Inside the unit, flow energy is converted into pressure, allowing the system to generate significantly higher pumping head than a surface pump could achieve on its own. This enables water to be lifted from substantial depths while using smaller, more efficient surface pumps. What makes the FlexExtend truly unique is its simplicity and durability. With no electrical components below ground, it eliminates many of the common failure points associated with traditional submersible pumps, especially in harsh or remote environments. The hydraulic ram action not only increases lift capability but also improves overall efficiency—often delivering multiple times the performance of comparable jet pump systems. The result is a highly reliable, low-maintenance solution that transforms how water can be accessed, making deep well pumping more efficient, scalable, and practical across a wide range of applications.
The original FlexExtend is the result of a rigorous five year research and development process and over $5 million (USD) investment. The world-class expertise and dedication behind this ground-breaking innovation has led to a product that is unparalleled by any other submersible pump technology on the market, providing versatile, reliable and highly efficient deep water access. Our High Flow FlexExtend model boasts all the features of the original but with the capacity for even higher flows.

Datasheet

Download the FlexExtend SLX-40-HF Datasheet

Installation Guide

Download the FlexExtend SLX-40-HF Installation Guide

User Guide

Download the FlexExtend SLX-40-HF User Guide

Type 1 Installation - Tank

Download the FlexExtend SLX-40-HF Installation Guide for Tank Systems

Type 2 Installation - Tankless

Download the FlexExtend SLX-40-HF Installation Guide for Tankless Systems

FlexExtend SLX-40-HF Brochure

Download the FlexExtend SLX-40-HF Brochure

Explore Our Product Range

FlexExtend
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FlexExtend
High Flow

SolarPlex
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