Model 7000 Pneumatic Positioner Accurate Valve Positioning The Posi-flate Model 7000 Pneumatic Positioner provides accurate valve positioning with advanced features. A current-to-pressure transducer for 4-20 mA signal inputs proportionally positions the disc. ® Applications A high flow spool valve, plus an adjustable gain system, make the pneumatic positioner well suited for use with all pneumatic rotary actuator types including rack-and-pinion, heavy duty and others. The positioner housing is constructed of durable epoxy coated, die cast aluminum for protection against the toughest applications in all process industries. Features Non-interactive span adjustment Reduces calibration time. Corrosion-resistant materials All exposed parts are constructed of heavy-duty anodized aluminum or stainless steel. Captive cover screws Permits calibration without potential for losing screws. Visual dome indicator Provides fully adjustable, high-contrast, full-angle viewing of valve position.

Principles of Operation The Posi-flate Model 7000 positioner causes rotation of a valve actuator in proportion to an input signal. The spool shifts and a differential pressure is created across the actuator, causing rotation. Rotation is fed back through the positioner shaft and cam. Cam rotation causes rotation of both follower arm and feedback arm about their respective pivot pins. Rotation of feedback arm changes compression in the feedback spring which forces the balance beam and spool back to their neutral positions. This shuts off the flow of air to the actuator. Zero adjustment is made...

SPOOL VALVE ZERO ADJUSTMENT SPAN ADJUSTMENT (UNDER COVER) Materials of Construction Part Performance Specifications Parameter Units & Value Epoxy Coated Aluminum Stainless Steel Hysteresis & Deadband Diaphragm Cover Epoxy Coated Aluminum Nitrile Rubber Stainless Steel Feedback Spring Stainless Steel Position Sensitivity 0.31 SCFM @ 87 psig (6 barg) Stainless Steel Temperature Range Stainless Steel Input Signal Twist Stop Stainless Steel Hardened Steel Spool Valve Gold-Plated Steel Zinc-Plated Steel Ball Bearing Stainless Steel Stainless Steel Feedback and Cam Springs Stainless Steel Shaft Snap...

Posi-flate® is a registered trademark of Posi-flate, St. Paul, Minnesota. © 2013 Posi-flate • Printed in U.S.A. • Bulletin 21149 Corporate Headquarters Posi-flate • St. Paul, MN USA • +1 651 484 5800 Worldwide Offices Brazil • China • New Zealand • United Kingdom www.posiflate.com