Pisces Fish Machinery has been produced roller graders in use though out the world. Pisces usually suppliers the machines with stands, catwalk, infeed hopper and out feed conveyors. The machines range in size from 7 to 13 rollers. The roller graders are equipped with a shaking infeed tray to ensure consistent flow of fish to the grader.
The fish are sorted into four separate grades by passing the fish between parallel rollers that gradually open the gap between them as the fish pass down the length of the roller. A fifth oversize grade at the end of the grader.
The PG uses four roller with flats on the top set to separate the shrimp. The top set vibrates the shrimp to stop them from stacking up on top of one another. This stops small shrimp from riding a larger shrimp down to the wrong grade. Both the rollers and the grade chutes are adjustable in order to allow for each customer to customize the grades for their needs. The standard size of the graders is from 1 to 6 channels.
