FlowFriend Series – Premium Variable Speed High Efficiency Pond Pumps
The FlowFriend PRO and wider FlowFriend Series represent a new generation of ultra-efficient, permanent magnet driven pond pumps designed for high flow, low energy consumption and professional koi pond systems.
Engineered in Germany and built to industrial standards, FlowFriend pumps deliver exceptional hydraulic efficiency, extremely quiet operation and precise speed control — making them ideal for large koi ponds, drum filters, moving bed systems and multi-bay filtration.
Key Features of the FlowFriend Series
- Extremely energy efficient permanent magnet motor
- Adjustable speed range: 600 – 2550 RPM (standard)
- Integrated digital display (power consumption + running hours)
- Optional 0–10V external control
- Large water flow at very low energy absorption
- Exceptionally quiet operation
- Premium efficiency IE4 motor class
- Voltage range: 100–240V / 50–60Hz (worldwide compatible)
- Fully cast Stainless Steel 316 hydraulics
Advanced Permanent Magnet Motor Technology
Unlike conventional frequency-controlled asynchronous motors, FlowFriend uses a high-efficiency permanent magnet motor delivering:
- Superior efficiency at low speeds
- Significantly lower power consumption across the entire RPM range
- 88–94% motor efficiency depending on speed
- German-developed and manufactured motor unit
This results in dramatically reduced running costs compared to traditional pond pumps.
Ingenious Stainless Steel 316 Hydraulics
The pump fan and housing (hydraulics) are fully cast from moulded Stainless Steel 316, offering:
- Extremely low internal resistance
- Maximum hydraulic efficiency
- Exceptional corrosion resistance
- Long-term durability in demanding pond environments
Hydraulics determine overall pump efficiency and suitability for application — and FlowFriend is optimised for high-flow, low-head systems.
FlowFriend PRO Performance Example
The FlowFriend PRO delivers outstanding efficiency:
- At 50cm head height → approx. 50m³/hour
- Power consumption: approx. 200 watts
- Large 125mm suction/discharge connections to minimise internal losses
Unlike air-lift systems, the PRO handles significantly higher pressure while remaining fully adjustable for system optimisation.
Ideal for:
- Multi-chamber systems
- Moving bed filters
- Drum filters
- High-volume koi pond circulation
Dry Runner Technology – Industrial Grade Safety
FlowFriend is a dry-set pump (axle seal design) rather than a wet runner.
Advantages over wet runner pumps:
- Lower energy losses
- Reduced electrical risk
- Greater mechanical durability
- Industrial-grade shaft seal (Eagle Burgmann)
Wet runner designs can present safety compromises in applications where people may contact the water. Dry runner construction is the preferred solution in industrial and professional installations.
Compliance & Testing
- Tested to NEN-EN-ISO 9906 performance standards
- Compliant with European Directive 2009/125/EC (Ecodesign Requirements for Water Pumps)
Why Choose FlowFriend for Your Koi Pond?
For serious koi keepers and large filtration systems, FlowFriend offers:
- Maximum flow with minimum electricity cost
- Precision controllability
- Industrial-grade construction
- Long-term reliability
- Premium German engineering
Available from West Midlands Koi — specialists in professional koi pond filtration and high-efficiency pump systems.
Installation user guide for the Flowfriend
Extended flow/efficiency diagram FlowFriend Pro
