New Products for 2011 - FESTO - #49

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49 Process automation Pilot valve VOFD Regulated linear drive DFPI Extremely sturdy, choice of explosion protection and internal or external pilot air Sturdy and reliable for measuring distances and controlling knife gate valves and penstock valves Highly corrosion-resistant and extremely reliable: the pilot valve VOFD. Ideal for heavy-duty applications in pharmaceutical, chemical and petrochemical systems thanks to its sturdy design, explosion protection for zone 1/21 G/D and SIL certificate for ESD applications. Benefits • Sturdy and very corrosion-resistant • Easy combination of the required coil and matching valve thanks to the armature guide tube • Explosion protection for zone 1/21 (gas and dust) • Direct mounting on the drive • High reliability of the directly actuated valves, especially in emergency shut-down (ESD) functions Technical data • Directly actuated • 3/2-way valves • Armature guide tube with poppet valve technology • Pressure range 0 ... 10 bar • Connection variants G1/4, NPT1/4, G1/4 and NAMUR • Ex em and Ex d ATEX explosion protection Sturdy and reliable: the regulated drive DFPI with integrated displacement encoder, valve block and positioner . For all linear actuated process valves for automating drinking water and waste water treatment plants. Benefits • Sturdy and compact housing – ideal for outdoor use • Easy commissioning thanks to self-initialisation • Quick and easy integration in existing control architectures: actuation via PLC • Speed of the forward and return motion to both end positions individually adjustable thanks to flow control function • Optional sensing of intermediate positions with Festo proximity sensors • With fully integrated (ATEX II 2D) or external positioner (ATEX II 3D) • High IP protection (IP65 and IP68) Technical data • Displacement encoder via linear potentiometric displacement sensor • Series with 100, 160, 200, 250 and 320 mm diameters available • X length up to 1,000 mm possible