The AMA range of magnetic drive pumps are designed to ISO2858 and ISO5199 standards. The pumps deal with high temperatures, high pressures and highly corrosive applications effectively, efficiently and reliably. The AMA magnetic drive range is one of the most efficient pumps in the field, with average operating efficiencies over 70% reducing energy consumption and the pump life-cycle cost.


REDUCED LIFE CYCLE COST
The patented run dry technology built into the AMA helps protect your pumps from a failure in the process. Most mechanically sealed pumps will fail when run dry, causing dangerous leakages and costly clean up bills as a result. However with the AMA, the pump can run dry for a number of hours alleviating process problems and avoiding damage to the pump. The second patented design feature of the AMA range will increase the mean time between servicing, reducing overall maintenance costs of your process. Should the AMA pump be subjected to adverse operating conditions, vibration would normally reduce the life of the internal parts. However, with the dynamic buffer system acting as a shock absorber between the impeller and the casing, the pump is protected as a result, thus minimising wear and prolonging the pumps service life.
HIGH EFFICIENCY DESIGN
The geometry of the impeller and casing are generated through hydraulic design programmes. Whilst taking into account the fluid dynamics, hydraulic loss is minimised and pump efficiency maximised. Lower electricity costs also come from the use of high efficiency IE3 motors.
PATENTED RUN DRY DESIGN
Unfortunately, errors can occur in a process that cause a pump to run dry. For a mechanically sealed pump this can cause an almost immediate failure to the seal. Some mag drive pumps are now available with special material bearings to prevent the onset of damage from running dry, but Crest Assoma Mag Drive pumps go another step further with the patented circulation path for additional cooling.
Under normal operating conditions, the pumped liquid acts as lubrication between the rotating and stationary parts, and the heat generated by the rotational action is gently taken away by the circulating liquid. But when a pump is starved of liquid, these moving parts generate heat from friction and as the heat builds up, damage will occur.
However, with the Crest Assoma Mag Drive range, a patented auxiliary circulation channel runs between the bearing and the magnet capsule. The pressure difference has a convection effect for cooling both the interior and exterior of the bearing thereby preventing the high temperature build up caused from dry running. The key point of this feature though, is that whilst the design allows for increased cooling, there is no reduction in pump efficiency.

THE CREST PUMPS LIFETIME GUARANTEE
No matter how old your pump becomes, in the unlikely scenario that you have a problem, our engineers will be on hand to diagnose the issue and help you get up and running again.That’s why, with Crest Pumps you’ll never need to worry about unplanned downtime again.
Talk to us now to discuss your chemical pump requirements or book a free site audit to see how much time and money you could save!
Built to outlast and outperform
Discover the significant savings you can achieve and explore the potential financial benefits that await you.

Technical Specification
Model | Suction (mm) | Discharge (mm) | Speed (rpm) | Rated Capacity (L/min) | Rated Head (m) | MAX CAPACITY (m /hr) |
MAX HEAD (m) |
MOTOR OUTPUT (kW) |
BEST EFF (%) |
AMA CT | 50 | 32 | 2900 | 17 | 45 | 45 | 54 | 5.5 | 70 |
AMA EP | 65 | 50 | 2900 | 36 | 33 | 60 | 37 | 7.5 | 74 |
AMA DT | 80 |
65 |
2900 | 36 | 45 | 54 | 57 | 11 | 75 |
AMA FP | 25 | 25 | 2900 | 72 | 32 | 108 | 38 | 15 | 77 |
Frequently Asked Questions
Magnetic drive pumps are used in a wide variety of applications, including chemical processing, water treatment, and metal finishing. They are designed to provide a reliable and efficient solution for transferring corrosive and hazardous liquids. The pumps are constructed with a non-metallic construction, making them ideal for use in highly corrosive and hazardous environments.
Magnetic drive pumps are centrifugal pumps that use a magnetic coupling to transmit power from the motor to the impeller. The drive magnet is mounted on the motor shaft that will connect by magnetic force to driven magnets contained within the pump. This type of pump is ideal for applications where leakage or contamination of the pumped fluid is a concern, as there is no mechanical seal or shaft seal to fail.
We have specialised in corrosion resistant pumps since 1973 so can almost certainly find you a solution to your application. Our chemical resistance table shows just some of the liquids we have experience pumping, but please talk to us to find the best chemical pumping solution for you.
- Check the pump regularly for signs of wear and tear.
- Ensure the pump is properly lubricated.
- Check the bearings for any signs of wear or damage.
- Ensure that the pump is properly aligned with the drive motor.
- Check the temperature of the pump and ensure it does not exceed the recommended levels.
- Ensure that the pump is running at the correct speed.
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