Pneumatic valve actuator DA series

rotarypistondirect-drive

1.Energized and self-lubricated strips Less friction between piston and cylinder It prevents the bonding of the seal to the cylinder even after long periods of inactivity 2.Slots, bushes and pins made by steel with hardness higher than 50 HRC Higher resistance to the forces inside the actuator 3.Rolling friction between piston and slot Less friction 4.Scotch yoke with rolling friction (transforming rotary motion into linear motion using piston and shaft without teeths/gears) Reduced friction between piston and shaft with consequently less wear on the relevant parts Empowered Breakaway Torque (BTO & BTC) Smaller volume/size than rack and pinion actuators (with the same torque) therefore less space required for installation Less weight than the rack and pinion (-30% kg / Nm), with consequent savings on the construction sizing of the plant/equipment Lower air consumption compared to the rack and pinion actuators (-40% air cm3/Nm for Double Acting and -20% air cm3/Nm for Spring Return) therefore less load on the compressor or the possibility of using a smaller compressor's size. 5.Rolled cylinder Less wear of the energized ties thanks to the low roughness of the surface (0.15 micron Ra) From sizes bigger than DAN15, NAMUR interface for solenoid valve is already integrated. No need for extra plate. 100% in- house manufacturing process technology Maximum control and accuracy in all the stages of the manufacturing process Installation is allowed in a potential explosive environment Guarantee of the high level of functional safety.