A Valve Positioner controls the position of a pneumatically actuated valve by comparing the required valve position with its actual position and adjusting the actuator air supply accordingly.

Rather than simply commanding a valve to fully open or close, a positioner allows the valve to move accurately to intermediate positions, making it particularly valuable in modulating applications where precise control of flow, pressure, level or other process variables is required.

The pictured unit is an electro-pneumatic rotary positioner fitted with a smart position transmitter/display and pressure gauge. This type of equipment is commonly paired with pneumatic rotary actuators on butterfly and ball valves.

Key Features

• Accurate valve positioning
• Electro-pneumatic operation on the pictured model
• Suitable for modulating valve applications
• Improves valve response and positioning accuracy
• Provides repeatable valve movement
• Rotary position control
• Visual valve-position indication
• Smart position transmitter/display on the pictured unit
• Pneumatic supply pressure indication
• Suitable for integration with process-control systems
• Helps compensate for actuator and valve operating characteristics
• Suitable for automated industrial valve installations

Typical Applications

• Automated control valves
• Pneumatically actuated butterfly valves
• Pneumatically actuated ball valves
• Mining and mineral processing
• Water and wastewater treatment
• Petrochemical and process plants
• Power generation
• Manufacturing and process automation
• Flow and pressure-control systems