Drum Grader

Accurate Grading, Compact and Easily Adjustable

VAKI Drum Grader

The VAKI Drum Grader is a rotary drum grader which has a drum formed of equally spaced 16 mm rods that make up a cone. The fish is pumped in on the narrow end of the cone to the internal side. A continues flow of water gently pushes the fish down along the rods and when the space between to rods is equal to the fish thickness it falls through and into the outlet chute.



–        Accurate grading of fish from 0.5g
–        High capacity
–        3 grades
–        Compact
–        Easily adjustable
–        Gentle on fish

The Drum Grader is made in 316L stainless steel and is fitted on a frame with 4 wheels which makes it easy to move between fish tanks.
Over all dimensions: (L x W x H) 1800 x 845 x 1900 mm. Inlet pipe 2” camlock male.
Outlet pipes: D=105 mm
The Drum Grader is operated from a simple control box with on/off buttons and an adjustable speed control. The power supply is a 10 amp 230V AC, 0,37 kW.



There are three outlets on the Drum Grader. Grade 1 and 2 are beneath the drum and grade 3 is for the largest fish that goes off the end. There are 3 standard size ranges available for the grader as shown in the table below. The drum is interchangeable. The rotational speed of the drum is adjustable from 0-10 rpm.
The handling of the fish is very gentle and it is always transported in water and abundant water is sprayed over the fish at all stages.


Drum I4812
Drum II91419
Drum III202835


Nr. of GradersCustomerCountryType
1ACUITEC S.L.Spain96 cm Grader
1AquaPro Solutions Pte Ltd.Singapore96 cm Grader
1Arnarlax ehf.Iceland96 cm Grader
1Åsen Settefisk ASNorwaySmart Grader
1Basis 57, Nachhaltige WassernutzungSwitzerland96 cm Grader
1Catvis BVNetherland96 cm Grader
1Cooke Aquaculture UKUKSmart Grader
1Cooke Aquaculture USA Inc.USA & Canada140 cm Grader
1Creative Salmon Company Ltd.Canada96 cm Grader
1Cromaris d.d.Croatia96 cm Grader
1Dawnfresh SeafoodsUK140 cm Grader
1Dundalk Bay Seafood's LtdIreland140 cm Grader
1Earth Ocean FarmsMexico96 cm Grader
1Eldisstöðin ÍsþórIcelandSmart Grader
1Eldisstöðin ÍsþórIceland140 cm Grader
1Fossing StorsmoltNorwaySmart Grader
1Framnessmolt ASNorwaySmart Grader
1Grieg Seafood BCCanada140 cm Grader
1Grieg Seafood FinnmarkNorway96 cm Grader
1Hushållningssällskapet VästernorrlandSweden96 cm Grader
1Interfish Ltd.Bulgaria96 cm Grader
1Kelly Cove Salmon Ltd.CanadaDrum Grader
1Luna P/FFaeroe IslandsSmart Grader
1Matorka ehf.IcelandSmart Grader
1Matorka ehf.Iceland96 cm Grader
1Midtnorsk HavbrukNorwaySmart Grader
1Mowi Norway ASNorwaySmart Grader
1Quan Ying (Fujian) Technology CompanyChina96 cm Grader
1Salmon smolt Nz Ltd.New Zealand96 cm Grader
1Samherji FiskeldiIcelandSmart Grader
2Statkraft Sverige ABSweden96 cm Grader
1Toskedal ASNorway96 cm Grader
1Tropenhaus Frutigen AGSwitzerland140 cm Grader
1VAKI ChileChile140 cm Grader
1VAKI ChileChileSmart Grader
1Yellowtail King FishAustralia96 cm Grader

What our Customers say

“The Drum Grader from VAKI has increased our grading efficiency a great deal. We are very pleased with the possibility to grade in three categories instead of the usually two, as with the old hand grading system (the box grader). The grader is very gentle to the fish and is pumped into the grader instead of netting/ and handling as it is done with the old method.
Also important is the saving of time and manpower. Before we had two to three people grading by box, but now we only need one person grading when using the Drum Grader. We find the grader really easy to work with and compact, that gives us the possibility to move it around and grade where ever we want. We find the benefits of the new Drum Grader quite big”.



+354 595 3010

Akralind 4, 201 Kópavogur


Akralind 4
201 Kópavogur
Tel (+354) 595 3000

Email vaki@merck.com

VAKI is one of MSD Animal Health (MSD) fish and aquaculture company.
MSD is the world’s leading animal intelligence group, providing world-class devices for animal identification and traceability. Our pioneering monitoring solutions deliver smart data products and services for the management and wellbeing of all animals.

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