The Flo-Line Primer 258^™ utilizes a screen belt conveyor system to separate hydrated clays and large drilled cuttings from drilling fluid. This allows finer screens to be installed on the primary shakers, leading to lower dilution and operating costs. The Flo-Line Primer 258 is used in place of scalping shakers. The synthetic screen belt is available in 5, 10, and 20 square mesh weave.

With a 1.5 HP electric motor driving a variable speed gearbox, the Primer allows ample adjustment for changes to solids loading. Rotating nylon brushes located at the discard end cleans the screen belt to eliminate blinding issues associated with sticky clays. The feed box comes with a built-in non-pressurized bypass. Access doors allow for easy clean out of the hopper, which simplifies screen belt replacement and allows inspection of the feed end roller. Optional features include custom hoods and custom hopper for oversize outlet.