D curves
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Curves for the D range of Centrifugal pumps - flooded suction

 

Please select the appropriate PDF file from the table below.

Note: all these curves are 2900 rpm, 50 Hz Go to 60 Hz curves 

PDF file

Model

Typical flow 

Max head

Issue & file size

Overview - current D range of flooded suction pumps, ie D121 / D5A

P25curve 25mm (1") eye 1 - 6.5 m3/h   Iss 1, 11/10 48kB
P40curve 40mm (1.5") eye 3.5 - 20 m3/h   Iss 3, 11/10 50kB
P50curve 50mm (2") eye 15 - 30 m3/h    Iss 3, 11/10 48kB
P65curve 65mm (2.5") eye 25 - 45 m3/h   Iss 1, 11/10 45kB
P80curve 80mm (3") eye 40 - 65 m3/h   Iss 2, 11/10 46kB
P100curv 100mm (4") eye 55 - 120 m3/h   Iss 1, 11/10 46kB
 contact MDM 125 - 200mm (5" - 8") eye 110 - 450 m3/h    

Overview - previous D range of flooded suction pumps, ie D2 / D2W / D3 / D4 / D6A

D40curve 40mm (1.5") eye 5 - 20 m3/h   Iss 2, 07/06 61kB
D50curve 50mm (2") eye 15 - 30 m3/h    Iss 2, 07/06 65kB
D80curve 80mm (3") eye 25 - 65 m3/h   Iss 2, 07/06 63kB
 contact MDM 100mm+ (4"+) eye 60 - 360 m3/h    

Specific models (current D range)

25D121 25D121 1 - 6.5 m3/h 17 m Iss 3, 10/10 94kB
40D121 40D121 3.5 - 20 m3/h 20 m Iss 1, 12/07 92kB
50D121 50D121 15 - 30 m3/h  20 m Iss 1, 12/07 92kB
2D5A 2"D5A " 152 m Iss 1, 12/10 89kB
65D121 65D121 25 - 45 m3/h  16 m Iss 2, 07/10 95kB
3D5A 3"D5A 40 - 65 m3/h 156 m Iss 1, 12/10 92kB
4D5A 4"D5A 55 - 120 m3/h 135 m Iss 1, 12/10 92kB

Current range of pumps                   H & CH pumps

The curves show the pressure (m head) against flow (m3/h) for water at 20oC and for a pump operating at 2 pole speed (2900 rpm with a 50 Hz supply).
They therefore apply to any fluid which is similar to water and has a viscosity of 1 cP and a specific gravity of 1.
For Air Separator 'AS' pumps and flooded suction pumps operating at other speeds, viscosities and specific gravities please
contact MDM
Curves are approximate and are subject to change without notice.
The files are in Adobe PDF format. Visit the Adobe website if you need to
download the Adobe Acrobat reader (freeware).