Pneumatic Positioner PPS Spirax Sarco

Possible Applications

The Spirax Sarco pneumatic positioner is deployed primarily in continuous process industries such as chemical processing, pharmaceutical manufacturing, and food and beverage production, where precise modulation of fluid flow is critical. It mounts directly onto linear pneumatic actuators operating globe and diaphragm control valves in steam distribution networks, cooling water loops, and chemical dosing lines. By continuously comparing the controller output signal against the actual valve stem position, the unit dynamically adjusts the supply pressure to overcome stem friction and fluid forces, thereby eliminating hysteresis and ensuring exact thermal or mass flow regulation. This level of precise positional feedback is essential in complex production sequences requiring tight temperature and pressure tolerances.

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