Air tourque 180 spring return actuator with 90 fail safety position Common features: Reliability- High performance - A rational and extensive product range that permits the best sizingselection at the lowest cost- Innovations and patented solutions for a universal drive shaft and amultifunction position indicator accepting a wide range of accessoriesselection at the lowest cost- Full compliance with latest worldwide specifications- A wide selection of internal and external protective surfacetreatments utilizing recently developed technology specifically designedto prevent deterioration due to wear and environmental conditions- Compact and aesthetically modern style without any external cavities where-in avoiding collection points for corrosion