Hagan Power Positioner - 8x14 Torque Type
with Manual Operator, Dust Cover, Air Lock, Heater & T-stat

---

True Positioning Devices – All power positioners assume a definite position of the crosshead or operating lever for each demand signal variation through the action of an integral feedback mechanism. Characterized Positioner – All positioners are equipped with a standard rotary cam or cam bar which produces a straight line relationship between input signal and output motion. Square or square root and blank cams are available. Air Lock – Designated models are equipped with an internal locking mechanism which stops and locks the positioner in the control position existing at the moment of air supply failure until air pressure is restored. System air locking schemes are also available. Manual Operators – All torque type positioners are equipped with either a manual operating lever or a manual operating handwheel. Ambient Temperature – Positioners are generally suitable for operation from 0 to 140°F (-17,8 to 60°C) with a maximum rating of 300°F (149°C) for certain high temperature models. Dust Cover and Internal Heater – A dust cover is provided with heater and thermostat. Limit Switches and Position Transmitters – Limit switches and position transmitters are available on designated models. Linkage – Clevises, linkage struts, and rigging accessories are available for all models, except the Heavy Duty Foot Mounting Type. Power Air Supply – Clean dry instrument air at 45 to 120 psig is required for cylinders of 8 inch diameter or less. For cylinders over 8 inches in diameter, the maximum air pressure for standard service is 100 psig and 250 psig for heavy duty service.

FEATURES AND APPLICATIONS Industry needs muscle to control process valves, dampers and feed mechanisms accurately and in response to a demand signal. Hagan pneumatic power positioners have been satisfying these exacting control requirements for many years in countless applications – from steel mills to refineries – where positioning speed and accuracy are taken for granted. Hagan power positioners offer accessories such as limit switches, position transmitters, heated enclosures, air failure lock, and characterized cams that provide an output motion that is a function of the input signal. The 8 x 14 and HF Heavy Duty units offer greater force for tougher jobs such as huge slide dampers and large valves.