AMX-GG

Plastic Magnetic Drive Pump

AMX-GG

Overview

Capacity <800 L/MIN
Head <35 Metres
Patented Run Dry Technology
Polypropylene / EFTE Build
Total Corrosion Resistance
Ex-stock Availability
Over 70% Operating Efficiency

Downloads

AMX-GG Pump Range Datasheet
View ‘Vandis Power’ Case Study
2 Year Warranty
2 Year Warranty
ATEX Zone 1 / 2 Certified
ISO 2858, 5199, 2084, 3661
Low Pump Life Cycle Costs
Patented Buffer System
Corrosion Resistance
Corrosion Resistance

Product Description

AMX-GG Plastic Magnetic Drive Pump

Magnetically driven pumps, such as the AMX-GG plastic magnetic drive pump, are the industry standard when processing harsh and highly corrosive applications. The centrifugal force is driven by two rotating magnets rather than being directly coupled to a motor. Eliminating the need for a mechanical seal and therefore making magnetic drive pumps completely leak proof.

The range of AMX-GG plastic magnetic drive pumps are designed to provide you with a long service life and minimal running costs. Operating at over 70% efficiency, AMX-GG pumps can be relied upon to work in the toughest of conditions including high corrosion, temperature and ATEX zones.

Reduced Life Cycle Cost

The patented run dry technology built into the AMX 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 AMX, 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 AMX range will increase the mean time between servicing, reducing overall maintenance costs of your process. Should the AMX 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 minimalising 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.

The AMX-GG range operates at over 70% efficiency. Lower electricity costs also come from the use of high efficiency IE3 motors (where available). We also trim the impeller diameter to your required duty point, increasing process efficiency. Inverters are also available to achieve the ultimate efficiency in your system.

 

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

Get in touch

Technical Specification

Model Suction (mm) Discharge (mm) Speed (rpm) Rated Capacity (m³/hr) Rated Head (m) Max Capacity (m³/hr) Max Head (m) Motor Output (kW)
AMX-GG220 25 25 2900 100 12 150 16 0.37
AMX-GG221 25 25 2900 120 16 170 22 0.75
AMX-GG440 40 40 2900 100 10.9 250 12.3 0.4
AMX-GG441 40 40 2900 150 15.6 350 19.0 0.75
AMX-GG552 50 50 2900 200 20.6 450 24.4 1.5
AMX-GG552H 50 50 2900 100 25.8 300 27.6 1.5
AMX-GG553 50 50 2900 250 25.8 500 30.6 2.2
AMX-GG553H 50 50 2900 150

31.8

350 34.2 2.2
AMX-GG555 50 50 2900 250 30.2 500 35.0 4.0
AMX-GG653 65 50 2900 450 17.0 700 20.0 2.2
AMX-GG655 65 50 2900 500 25.0 800 27.6 4.0
AMX-GG86G 80 65 2900 1000 20 1200 28 5.5
AMX-GG86J 80 65 2900 1050 25 1350 33 7.5

Curves

Pump curves for the magnetic drive AMX-GG ranges.

Dimensions


For specific 3D CAD drawings or specific pump dimensions, please contact us at info@crestpumps.co.uk or telephone +44 (0)1425 627700.
NOTE:

  1. The total length and weight of the pump will differ depending on the brand of the motor.
  2. All dimensions are in mm.
  3. Assembly tolerances are +/- 3mm.

Model range is full polypropylene range. Please see our website for more details on cast iron models.
 
PLEASE ALLOW FOR MANUFACTURING TOLERANCES OF UP TO +/- 3MM

Model A B C D E F G H I J K L M N O
AMX 220 65 19 195 225 12 255 140 85 138 128 203 90 449 19
AMX 221 65 19 195 225 12 255 140 85 138 128 203 90 473 19
AMX 440 54 19 195 225 12 225.5 130.5 65 137 35 128 203 87.5 444 19
AMX 441 72 19 195 225 12 257.5 142.5 85 153.5 128 203 105.5 489 19
AMX 552 80 19 220 250 12 281.5 161.5 90 136 27 146 330 90 501 19
AMX 553 80 19 220 250 12 281.5 161.5 90 136 27 246 330 90 523 19
AMX 555 80 19 220 250 12 323.5 161.5 132 125 27 246 330 92.5 599 19
AMX 653 80 19 220 250 12 331 169 132 131 27 246 330 92 540 19
AMX 655 80 19 220 250 12 331 169 132 131 27 246 330 92 606 19

Patented Run Dry Design

Traditional circulation path

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.

Assoma circulation path

We must point out that there are many ways to run a pump dry, and this design feature is in no way a failsafe method (you should question any pump manufacturer that does make this claim). It depends upon how (e.g. completely closed inlet valve, air lock, foot valve failure, etc) and for how long the pump is run dry, as to how long the Crest Assoma Mag Drive range will run without damage being caused. For test reports or further information, please contact our engineers. If a pump is to be installed in an application where the pump is likely to see risks of dry running, then we would always recommend the installation of the PSP1 dry run monitor for additional peace of mind.

*This run dry design only applies to carbon/ceramic internal parts and not SSiC

Exploded View


  1. Flange Assembly – The orientation of the flange can be varied to match the corresponding boltholes to facilitate existing pipework. The new welded design also helps to eliminate leakage from potential flange deformation.
  2. Patented Buffer System – The AMX-GG range boasts a dynamic buffer system which absorbs vibration and shock caused by adverse operating conditions, increasing the mean time between servicing and reducing maintenance costs as a result.
  3. High Performance Magnetic Coupling – Using the latest magnetic analysis programmes to calculate magnetic torque and maximise utilisation, ensures sufficient torque margins to prevent de-coupling.
  1. High Efficiency Flow Design – With over 70% operational efficiency, this helps reduce energy consumption and lowers energy costs.
  2. Patented Run Dry Design – Running a pump dry can halt any process. However the AMX-GG range features run-dry protection built in, allowing the pump to run dry for an extending period of time, saving your process from total failure.
  3. Integrated CAD Design – The AMX-GG has been designed to fit the modern requirements of a high efficiency process system. Constant research and development ensures that the AMX-GG range is the industry standard in its field.

Parts List & Material Construction

Improved Design Features

The GG denotes the new design encompassing a polypropylene baseplate and adaptor. Compared to the older design of stainless steel and cast iron, polypropylene has a far greater chemical resistance, thus increasing the longevity of the entire pump in the harsh environments they can be exposed to.

The unique adjustable outer flange design remains, but the inner flange adaptor is now welded to the casing for greater strength and also removes any risk of leakage from o-ring deformation.

Material Code Part ACV (ACE) ARV (ARE) SSV (SSE) Quantity
101 Pump Casing PP + GF / ETFE + CF 1
161 Backup Plate SUS304 1
181 Bracket FC / PP + GF 1
230 Impeller Wear Ring Carbon PTFE + Filler SSiC 1
319 Trust Ring Buffer 995 Ceramic 995 Ceramic SSiC 1
725.01 Inlet Flange Adaptor PP + GF / ETFE + CF 1
725.02 Outlet Flange Adaptor PP + GF / ETFE + CF 1
B11 Base Plate* SUS304 / PP + GF 1
EM Motor Aluminium Alloy / FC 1
F15 Front Shaft Support ETFE + CF 1
F21 Inlet Adjustable Flange** PP + GF / ETFE + CF 1
F31 Outlet Adjustable Flange** PP + GF / ETFE + CF 1
L23 Magnet Capsule PP / ETFE, Nd-Fe-B 1
M01 Drive Magnet Nd-Fe-B 1
R01 Rear Casing Thrust Ring 995 Ceramic 995 Ceramic SSiC 1
RG Gasket Viton/EPDM Viton/EPDM Viton/EPDM 1
S11 Shaft 995 Ceramic 995 Ceramic SSiC 1
S21 Slide Bearing Carbon PTFE + Filler SSiC 1