Fish Graders
High-precision grading of fish
VAKI's Graders sort fish by size automatically, spreading them evenly across every track to protect grading accuracy and fish welfare. Choose the 5, 7 or 10-Track model built for your operation.
Accurate and high-precision grading
The VAKI Graders deliver accurate fish grading while minimizing the impact on your fish as they pass through the outlets. The dewatering unit distributes the fish evenly over the width of the grader, so all grading tracks are used effectively.
The opening of the grader is controlled with electric linear actuators that can be operated from a control panel on the grader, remotely from a smart device or automatically from the VAKI Counter which counts, measures size and calculates the split between the grades.
The size opening for each grade is displayed on the digital display. The grader is built from high-grade stainless steel 316L and selected plastic materials that are corrosion- and water-resistant. The inclination of the main sorting unit can be adjusted from 5-10° either with an electric actuator or manually.
- High-precision grading with electronic adjustment of grade size settings and grader tilt.
- Full-width fish inlet for maximum spread and gentle handling of fish.
- Connectivity to VAKI Cloud and VAKI SmartFlow for enhanced operational efficiency.
- Compact design with high capacity and easy adjustability.
VAKI Fish Graders
Five, seven or ten tracks
Every VAKI Smart Grader connects to SmartFlow and grades gently by size — choose the track count that matches your site's capacity.
5-Track Grader
5 grading tracks for fish from 5-500 g, up to 7,500 kg/h, with a manually operated tilt.
- 5 grading tracks
- Roller diameter: 60mm
- Capacity: up to 7,500 kg/h
- Min. Fish size 5g
- Max. Fish size 500g
- Fish width: up to 50mm
- Grader tilt: manually operated
- Weight: 500kg
- Dimensions(L ×W ×H): 3,000 mm × 1,100 mm × 1,400 mm
- Inlet size: DN150 Camlock
- Outlet size: OD=154 mm
7-Track Grader
7 grading tracks for fish from 5-2,000 g, up to 40,000 kg/h, with electronic tilt — VAKI's highest-capacity grader.
- 7 grader tracks
- Roller diameter: 75mm
- Capacity: up to 40,000 kg/h
- Min. Fish size: 10g
- Max. Fish size: 3500g
- Fish width: up to 70mm
- Grader tilt: electronic
- Weight: 1500kg
- Dimensions(L×W×H): 5,700 mm × 2,150 mm × 2,300 mm
- Inlet size: DN200 flange
- Outlet size for grade: 1 OD=200 mm
- Outlet size for grades 2 and 3: DN250 flange
10-Track Grader
10 grading tracks for fish from 5-500 g, up to 15,000 kg/h, with electronic tilt.
- 10 grading tracks
- Roller diameter: 60mm
- Capacity: up to 15,000 kg/h
- Min. Fish size: 5g
- Max. Fish size: 500g
- Fish width: up to 50mm
- Grader tilt: electronic
- Weight: 900kg
- Dimensions (L×W×H): 3,250 mm × 2,100 mm × 1,600 mm
- Inlet size: DN200 Camlock
- Outlet size: OD=154 mm
5-Track Grader
5 grading tracks for fish from 5-500 g, up to 7,500 kg/h, with a manually operated tilt.
- 5 grading tracks
- Roller diameter: 60mm
- Capacity: up to 7,500 kg/h
- Min. Fish size 5g
- Max. Fish size 500g
- Fish width: up to 50mm
- Grader tilt: manually operated
- Weight: 500kg
- Dimensions(L ×W ×H): 3,000 mm × 1,100 mm × 1,400 mm
- Inlet size: DN150 Camlock
- Outlet size: OD=154 mm
Compare grader models
Every model is available as a Basic or Smart Grader. Smart models connect to SmartFlow for remote monitoring and automation. Basic models operate standalone.
| Attribute | 5-Track Grader | 7-Track Grader | 10-Track Grader |
|---|---|---|---|
| Grading tracks | 5 | 7 | 10 |
| Roller diameter | 60 mm | 75 mm | 60 mm |
| Capacity (salmon) | Up to 7,500 kg/h | Up to 40,000 kg/h | Up to 15,000 kg/h |
| Fish size | 5–500 g | 5–2,000 g | 5–500 g |
| Fish width | Up to 50 mm | Up to 70 mm | Up to 50 mm |
| Grader tilt | Manually operated | Electronic | Electronic |
| Weight | 500 kg | 1,500 kg | 900 kg |
| Dimensions (L×W×H) | 3,000 × 1,100 × 1,400 mm | 5,700 × 2,150 × 2,300 mm | 3,250 × 2,100 × 1,600 mm |
| SmartFlow compatible | Yes | Yes | Yes |
| Warranty | One year | One year | One year |
Contact service team service@vaki.is or call +354 595 3012
Take control of fish handling with VAKI SmartFlow
Connecting your Smart Pumps, Graders, and Counters in one intelligent system. Improve accuracy, reduce manual work and support fish welfare with automated control and real-time insights that help you make confident decisions.
Learn about SmartFlowTHE GRADING CHALLANGE
Grading fish is important for the feeding needs, growth and development
The benefit must outweigh the stress of handling
More equal access to feed
Larger, dominant fish can outcompete smaller fish. Grading can reduce this imbalance, giving smaller fish better feeding opportunities and reducing competition.
More precise feeding
Groups of similar-sized fish make it easier to match pellet size and feeding rates to their needs. This supports efficient feeding and helps avoid waste.
Easier production planning
In practical terms, narrower size ranges help farmers plan tank allocation, transfers and harvest batches: faster-growing fish can move forward while smaller fish receive more time to grow.
How VAKI Graders work
The devices are designed for high precision grading of fish, ensuring gentle handling to promote fish welfare.
Fish enter evenly
The dewatering unit distributes fish across the full width of the grader.
Grading happens automatically
Electric linear actuators open each outlet to the size you set: from the control panel, a smart device, or automatically from the VAKI Counter as it counts, measures and calculates the split between grades.
Each grade exits gently
Outlets are designed to minimize impact on the fish as they pass through, routing each grade to where it needs to go.
Common questions
It depends on your throughput and fish size range: the 5-Track handles up to 7,500 kg/h, the 7-Track up to 40,000 kg/h, and the 10-Track up to 15,000 kg/h. Compare the three above, or request a quote and our sales team will help you size the right model.
Yes. All three SmartGrader models are SmartFlow compatible, but each also runs stand-alone from its own control panel or a smart device.
No. VAKI equipment is sold through a tailored quote process. Request a quote and our sales team will scope your operation.
VAKI has sales and service teams in Iceland, Norway, Chile and Scotland who support installation, commissioning and ongoing service.
Yes, layout drawings for the 5-Track, 7-Track and 10-Track SmartGraders are available above, so you can plan the installation space before you order.
Smart Graders (5, 7 and 10-Track) grade live fish by size using rollers and electric actuators. The Drum Grader is a separate design. Contact us for details on which fits your operation.
Still have questions?
Talk to VAKI about your grading needs
Get a quote for your Smart Grader tailored to your operation.
Sales and service teams located in Iceland, Norway, Chile and Scotland