AVF – Flow<750 l/m. Head<28m

Plastic Magnetic Drive Pump

AVF – Flow<750 l/m. Head<28m


Capacity <800 L/MIN
Head <35 Metres
Canned Motor, Seal-less
Polypropylene / EFTE Construction
Total Corrosion Resistance
Reduced Life Cycle Cost
Low Noise
AVF Pump Range Datasheet
View ‘Canned Motor Pumps’ Case Study
2 Year Warranty
ATEX Zone 1 / 2 Certified
ISO 2858, 5199, 2084, 3661
Patented Buffer System
Corrosion Resistance
Low Pump Life Cycle Costs
Corrosion Resistance

Product Description

AVF Plastic Magnetic Drive Pump


A bold statement, but the new AVF canned Magnetic drive pump leads the way in high efficiency, low energy pumping.  The issue is that induction motors are bulky and low in efficiency from their very design. When an Inverter is added to control the pump, the overall system efficiency is further reduced, diminishing the effectiveness of energy consumption.

Canned motor pumps integrate the design of the electric motor and magnetic drive pumps into one. The stator of the motor directly drives the inner magnet of the pump, eliminating the motor rotor and the drive magnet. Because the AVF range uses a permanent magnet rotor and there is no induced current compared to an induction motor, efficiency is increased by up to 20% and power consumption reduced by 50% or more.

When specifying any pump, the user must look at the overall life cycle cost (LCC) in order to make an informed decision. The AVF range reduces the variable costs of pump ownership (energy usage, repair costs, downtime) as these account for over 80% of the LCC.

Through in depth hydraulic, rotor, electrical and magnetic analysis, AVF motors exceed current IE3 efficiency limits. As of 2018, the 1.1kW and 2.2kW models exceed IE4 standards whereas 4kW and 7.5kW models exceed future IE5 efficiency limits.

All Crest Pumps are suitable for applications across the globe. Please contact us with your location and motor requirements. We can then supply performance curves relative to your required speed and voltage.

Would you like more information about our range or help in finding the right pump for your application? Give us a call on 01425 627700 or get in touch via our enquiry form

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Technical Specification


Pump curves for the magnetic drive AMX-GG ranges.


The AVF uses a permanent magnet rotor, meaning there is no induced current. Efficiency is therefore increased by <20% and electricity consumption reduced by 50% on average compared to an induction motor. Because the AVF range is a fan less design, both heat and noise are significantly reduced compared to traditional mag drive pumps. of power under the same hydraulic power output.


Exploded View

Permanent Magnet Synchronous Motor

Laboratory tests carried out to show the greater efficiency of the AVF per magnet with synchronised motor, compared to the traditional induction motor.


In our tests, we compared the AVF-555 pump at 2850 RPM with a magnetic drive seal-less pump of similar specifications coupled with an induction motor.
The result was a 5% higher overall efficiency with the AVF pump, saving 0.2 to 3 kW of power under the same hydraulic power output.
But the real cost saving comes when the pump is used for a duty below the rated speed. Because an AC motor with inverter becomes very inefficient at lower speeds, the input power greatly increases when compared to the AVF shaft power.

Parts List & Material Construction