Mud agitator is a standard machine for drilling mud tank. It really is used in mud tank to agitating fluids and keep away from it from settling down.
Per the design variety, you will discover coupling variety agitator and direct connecting sort mud agitator.
Per difference Horsepower, you will discover agitator vary from 4hp to 30hp.
JBQ   Mud Agitator Technical Parameters:
Model Motor (Kw) Speed (RPM) Impeller Size (mm) Impeller Qty (pcs) Ratio Weight (Kg) Dimension(mm)
GNJBQ030A 3 60/72
(50HZ/60HZ) 650 1 25:1 190 909×525×527
GNJBQ055A 5.5 850 1 250 1072×610×588
GNJBQ075A 7.5 950 1 356 1157×670×607
GNJBQ075A-D 800 2 378
GNJBQ110A 11 1050 1 479 1297×740×692
GNJBQ110A-D 850 2 494
GNJBQ150A
15 1100 1 684 1330×890×747
GNJBQ150A-D 950 2 702
GNJBQ185A-D 18.5 1050 2 750 1510×890×753
GNJBQ220A-D 22 1100 2 780 1529×890×753
Remarks Shaft and impeller will probably be offered by GN, but not including within the weight & dimension.
How to match mud agitator:
1) Per tank dimension, usually 25cbm around there should be a mud agitator.
2) Mud agitator shaft length depends on tank dimension.

Which tank compartment should equipped mud agitator?here http://mudagitator.wordpress.com/2014/04/26/gn-mud-agitator-design-in-2014-year/, following is the information
1) Desilter tank, centrifuge tank, mixing tank, storage tank, trip tank, pill tank, there should be equipped mud agitator
2) Vacuum degasser tank, it’s optional to equipped mud agitator
3) Shale shaker tank, there is normally no need to equipped with mud agitator