Chinese Pneumatic Control Valve With Intelligent Original Foxboro SRD991 Valve Positioner

The Foboro SRD991 Valve Positioner is a high-performance digital positioner designed for precise control of pneumatic control valves. With advanced diagnostic functions, smart communication protocols, and durable design, the SRD991 ensures reliable performance in demanding process industries such as oil & gas, petrochemicals, power generation, and water treatment.

By integrating intelligent feedback and self-calibration, the Foboro SRD991 helps operators reduce downtime, improve valve accuracy, and achieve higher process efficiency.

• Digital Communication Support – HART, Profibus PA, or Foundation Fieldbus options.
• High Accuracy – Delivers precise valve positioning with advanced control algorithms.
• Self-Diagnostics – Monitors valve health and provides predictive maintenance alerts.
• Robust Construction – Resistant to vibration, harsh environments, and extreme conditions.
• Flexible Mounting – Suitable for both linear and rotary actuators.
• User-Friendly Interface – Local display and configuration options for quick setup.

• Input Signal: 4–20 mA (two-wire)
• Communication: HART, Profibus PA, Foundation Fieldbus
• Valve Types: Linear and rotary actuators
• Air Supply Pressure: Up to 6 bar (90 psi)
• Material: Aluminum or stainless steel housing options
• Operating Temperature: -40°C to +80°C
• Enclosure Rating: IP65 / NEMA 4X

The Foboro SRD991 is widely used in:

• Oil & Gas – Reliable valve automation in upstream, midstream, and downstream operations.
• Petrochemical Plants – Accurate flow and pressure control under challenging conditions.
• Power Generation – Steam and cooling water control.
• Water & Wastewater – Efficient process control for treatment plants.
• General Process Industries – Chemical, pulp & paper, and pharmaceuticals.

• Increased process reliability through smart diagnostics.
• Reduced maintenance costs by predictive valve health monitoring.
• Enhanced operational efficiency with precise control.
• Compatibility with major DCS/PLC systems.

At Xiangjing (Shanghai) Mechanical and Electrical Tech Co., Ltd., we specialize in distributing internationally recognized valve positioners, including the Foboro SRD991.

• Large inventory for fast delivery.
• Technical support from a professional engineering team.
• One-stop solutions for valve automation and process control.
• Long-standing partnerships with global brands ensure competitive pricing.

Visit our official website: www.shgongboshi.com

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