The Foxboro SRD991 Valve Positioner is a robust digital controller that integrates seamlessly into process systems for precise pneumatic actuator management. Using piezo valve technology, it delivers fast, stable positioning for rotary and linear valves, with HART communication for enhanced diagnostics. The SRD991's vibration-resistant design and simple calibration make it a dependable choice for oil and gas, chemical, and water treatment industries. With low air consumption and modular upgrades, it supports efficient automation and reduced operational costs.

• Robust Piezo Valve: Ensures quick, hysteresis-free positioning.
• HART Integration: Digital protocol for process connectivity.
• Vibration Resistance: Stable in dynamic environments.
• Modular Upgrades: Easy expansion to advanced models.
• Local Display: LED for status indication.
• Low Air Use: Energy-efficient for cost savings.
• Universal Actuator Support: Single/double-acting rotary/linear.
• IP66 Enclosure: Protects against dust and water.

The Foxboro SRD991 Valve Positioner is built for robust integration in process industries:

• Petrochemical: Valve control in refining processes.
• Oil and Gas: Pipeline and offshore automation.
• Power Generation: Boiler valve positioning.
• Chemical: Flow regulation in hazardous setups.
• Water Treatment: Dosing system control.

Its HART protocol and piezo technology ensure seamless process connectivity.

Yes, supports 10–100 mm strokes.

1.4–7 bar for optimal performance.

Yes, robust design handles dynamic conditions.

Low air consumption and <1W power use.

Contact our team for inquiries about the Foxboro SRD991 Valve Positioner, pricing, or to schedule a demo:

• Email: ekko.lee@gongboshi.com
• Phone: +8613032169970

• Foxboro SRD998 Positioner: Enhanced diagnostics model.
• Foxboro SRD960 Positioner: Basic digital option.
• Foxboro Control Valves: Precision valves for pairing.
• Foxboro Valve Services: Professional maintenance.