Meta Description & Product Overview

The Foxboro SRD991 Intelligent Valve Positioner is a high-performance, microprocessor-based digital valve controller designed for demanding industrial process applications. Offering compatibility with HART® 7 and Foundation Fieldbus™, the SRD991 ensures accurate valve positioning, smart diagnostics, and predictive maintenance capabilities. Manufactured by Schneider Electric (formerly Invensys Foxboro), it supports both linear and rotary actuators and features auto-calibration, IP66 protection, and a wide operating temperature range, making it an ideal solution for industries such as oil & gas, power generation, chemicals, and water treatment.

Key Features & Benefits

• ✅ High Precision Positioning – Linearity better than ±0.2%, repeatability ±0.1%

• ✅ Dual Protocol Support – Communicates via HART 7 or Foundation Fieldbus

• ✅ Advanced Diagnostics – Continuous monitoring of valve stroke, friction, air supply, and actuator performance

• ✅ Auto Setup & Calibration – Simplified commissioning with push-button or remote configuration

• ✅ Explosion-Proof Design – Certified for hazardous area use: ATEX, CSA, FM, IECEx

• ✅ Flexible Mounting – Supports both linear and rotary actuators with NAMUR compliance

• ✅ Durable Housing – IP66-rated, corrosion-resistant aluminum alloy enclosure

• ✅ Integrated LCD Display – Intuitive user interface with multi-language support

Technical Specifications

Xiangjing (Shanghai) - Leading Distributor of Pneumatic and Electric Control Valves

Established in Shanghai, China, Xiangjing(Shanghai) Mechanical and Electrical Tech Co.,Ltd has been a trusted distributor of high-quality pneumatic and electric control valves for many years. With extensive industry experience, we provide our customers with a comprehensive range of products from renowned global brands, ensuring reliability and performance in industrial automation and control systems.

Our Product Portfolio:

• Pneumatic Control Valves: We offer top-tier products from industry giants such as Fisher, Samson, Koso, Masoneilan, Flowserve, Metso/Neles, CCI/STI, HORA, KTM, Sempell, Keystone, WEIR, Azbil, and leading Chinese brands.
• Safety Valves: Our selection includes Crosby, Dresser, Leser, and various well-established Chinese brands.
• Electric Actuators: We supply high-quality actuators from ROTORK, Limitorque, Auma, SIPOS, PS, and other respected Chinese manufacturers.
• Measurement and Instrumentation: Our portfolio features reliable pressure, temperature, level, and flow transmitters from Rosemount, E+H, Yokogawa, ABB, Siemens, VEGA, Krohne, Magnetrol, , and Chinese brands.
• Distributed Control Systems (DCS): We provide advanced systems from leading brands such as Ovation, DeltaV, Schneider-Foxboro, Honeywell, and ABB.

Why Choose Us?

• Extensive Experience: With years of expertise in control valves and instrumentation, we have developed a deep understanding of our customers' needs and requirements, enabling us to offer tailored solutions that optimize performance and efficiency.
• Diverse Product Range: We are proud to offer both internationally recognized and high-quality Chinese brands, ensuring that we can meet a wide range of customer specifications with competitive pricing and short delivery times.
• Reliable Support: Our team is committed to providing exceptional customer service and technical support, helping customers select the right products and ensuring seamless integration into their systems.

We are confident that our rich industry experience and diverse product offerings will make us a strong partner in fulfilling your automation and control needs. We look forward to the opportunity for long-term and mutually beneficial cooperation.