Foxboro Srd991 Smart Valve Positioner Asco 342A Air Filter Regulator Pneumatic Control Valve

The Foxboro SRD991 Smart Valve Positioner is a high-performance intelligent device designed for precise valve control in modern process automation systems. It combines advanced digital technology, reliable communication protocols, and diagnostic capabilities to ensure maximum efficiency, accuracy, and plant safety.

Engineered by Foxboro (Emerson), the SRD991 represents the next generation of intelligent valve positioners, offering superior stability and long-term reliability for pneumatic control valves used across industries such as oil & gas, petrochemical, power generation, water treatment, and pharmaceuticals.

1. High-Precision Digital Control
   The SRD991 uses microprocessor-based digital signal processing (DSP) technology to provide accurate valve positioning, fast response, and minimal hysteresis.

2. Multi-Protocol Communication
   Compatible with HART, FOUNDATION Fieldbus, and Profibus PA, the SRD991 enables real-time data exchange with DCS, PLC, or asset management systems.

3. Comprehensive Self-Diagnostics
   Built-in diagnostic tools continuously monitor valve performance, air supply, and actuator behavior. Early fault detection reduces downtime and maintenance costs.

4. Automatic Calibration
   The auto-calibration feature allows quick setup and configuration, ensuring precise zero and span adjustments without manual tuning.

5. Durable Industrial Design
   The housing is made of corrosion-resistant aluminum alloy, rated for explosion-proof and harsh environments. It performs reliably under extreme temperature, vibration, and humidity.

• Oil & Gas Process Control

• Petrochemical Plants

• Power Generation Units

• Water Treatment and Environmental Systems

• Pharmaceutical and Food Production Lines

The Foxboro SRD991 is widely used in critical control loops where accuracy, feedback reliability, and remote diagnostics are essential.

• Enhances process accuracy and repeatability

• Reduces manual maintenance with predictive diagnostics

• Supports remote monitoring and configuration via HART

• Extends actuator and valve life

• Easy installation and configuration

Dr. Industry Group Co., Ltd., based in Shanghai, China, is a trusted supplier of Foxboro SRD991 Smart Valve Positioners with extensive experience in control valves, valve accessories, and industrial automation components. We provide:

• Genuine Foxboro products with fast delivery

• Professional valve matching and technical support

• Global export service covering Asia, the Middle East, and Europe

Email: edwardzhao@gbsxj.com
Phone: +86-15000725058
Website: www.shgongboshi.com