February 1, 2008 - “Harder screw and barrel materials are also now used but overall, we are seeing 75% less wear and 95% less NRV breakage,”says Borgerson. Further, the NRV action is checked annually at low injection speed and pressure using a welded-shut tip. Maverick Systems (Fort Worth, TX), a machine-maintenance and PM services provider, uses lasers to precision align critical machine components, be they injection tools, extruder screws, barrels and gearboxes, or film lines.