ORV /HORV Series Slit Type Rodless Linear Actuators Our most popular series has attracted many OEM customers because of the cost reduction this model offers when compared to other slit type actuators. The unique oval piston design provides the smallest height dimension and most lightweight option based on similar bore and stroke models. The Selection Guide provides a summary of the 5 different ORV /HORV Series Slit Type Linear Rodless Actuator variations available. ORV /HORV Series Rodless Actuators offer: Non-Guided Oval Bore Slit Type Double Acting Operation Oval Piston Design Allows for High Force in a Small Envelope High Strength Stainless Steel Band Design for Long Life with Low Leakage Clean Installations – Integrated 4 mm Sensor Groove – Lead Wires Exit Same End RoHS Compliance