Revolving grader

 

The Vaki grader is circular and has a number of boxes that rotate within the grader. As each box passes over an outlet the grading gap (opening) in the bottom of the box is automatically increased to a pre-selected size. The grading gaps can be set from fully closed up to a maximum 50mm wide. The length of the box and the 50mm maximum opening limits the largest size of fish that can be sorted.

The fish are graded by thickness.

Both graders are constructed from stainless steel, have height adjustable legs and are fully portable on rubber wheels .

 

4 Grades

 

The standard grader has 4 outlets and a single fish inlet.

Fish can be up-welled from a pump or netted into the grader.

The inlet can be angled to increase or slow down the fish flow into the grader and the inlet has an integrated de-watering box.

There is 360° adjustment in the direction of  the outlets from the grader..

Variable speed

The Vaki grader has speed regulator which can adjust the speed from 5 - 15 rpm .

Mains power supply by either single or three phase.

 

 

Fish stay in water

 

Water flows into the rotating grading boxes from the integrated sprinkler system.

The fish remain in water at all times during the grading and pass easily through the outlet pipes.