Flowserve 3200MD and 520MD are high-performance intelligent digital valve positioners of the Logix series, engineered for precise and reliable control of linear and rotary actuators in industrial process systems. Adopting piezoelectric technology and 32-bit microprocessor, they convert 4-20 mA electrical signals into proportional pneumatic output, with built-in HART communication for two-way data transmission and remote configuration. These positioners feature ultra-fast response, high positioning accuracy and robust environmental adaptability, ideal for critical process control in harsh industrial conditions and compatible with single/double-acting actuators for diverse valve types.

• High Precision Positioning: ±0.1% positioning accuracy and ≤0.25% repeatability for micro-adjustment of valve control and stable process regulation.
• Advanced Piezoelectric Technology: Fast response time <50 ms, with dual-stage control design to compensate for high medium pressure difference (Δp >1 MPa).
• HART Communication Compatibility: Supports HART 5/7 protocol for remote calibration, monitoring and diagnostics, realizing two-way data transmission of configuration parameters and status.
• Intelligent Auto-Tuning: Dynamic gain auto-tuning function optimizes actuator performance automatically, reducing overshoot and simplifying commissioning.
• Powerful Diagnostic Capabilities: Three-level diagnostics (Standard, Advanced, Pro) with over 130 alarm types to monitor valve, actuator and positioner health in real time.
• Extreme Environmental Resistance: IP66/IP67 enclosure protection, operating in -52°C to 85°C temperature range and 0-100% non-condensing humidity.
• Broad Compatibility: Adapts to linear and rotary actuators, supports linear, equal percentage or 21-point custom flow characteristic curves, with remote mounting option for vibration/high-temperature scenarios.
• Fast Power-Up & Low Consumption: Power-up time <1.0 second, two-wire 4-20 mA power supply with low operating current, easy integration with PLC and DCS systems.

Flowserve 3200MD and 520MD positioners are widely used in critical process control across various industrial sectors that demand high precision and reliability, with excellent performance in high pressure difference, corrosive medium and frequent adjustment working conditions:

• Oil & Gas: Onshore/offshore production, refining, pipeline pressure control, compressor anti-surge valve regulation and storage terminal process control.
• Petrochemical & Chemical: Reactor feed valve control, distillation tower reflux regulation, polymer production and specialty chemical processing lines.
• Power Generation: Thermal power plant steam turbine inlet valve adjustment, boiler feed water control and waste-to-energy system process regulation.
• Water & Wastewater: Sedimentation tank sludge discharge valve control, filtration system regulation and sewage treatment process control.
• General Industry: Mining & metals processing, pulp & paper production, pharmaceutical manufacturing and food & beverage processing lines.

Q: What is the core difference between Flowserve 3200MD and 520MD?

A: 3200MD is the mainstream high-performance model for general industrial critical control with rich diagnostic functions and remote mounting support; 520MD is optimized for compact installation and high-flow capacity requirements, with more flexible air supply adaptation for small and medium-sized actuators.

Q: Can Flowserve 3200MD/520MD be used in hazardous areas?

A: Yes, both models feature explosion-proof and intrinsically safe design, with robust enclosure and anti-corrosion material, suitable for hazardous industrial areas with flammable and explosive media.

Q: How to realize remote configuration and calibration of the positioners?

A: They support HART 5/7 communication protocol, which can realize remote parameter configuration, calibration and real-time status monitoring through HART communicator or ValveSight™ software, without on-site operation.

Q: What types of actuators and valves are compatible with 3200MD and 520MD?

A: Both models are compatible with single and double-acting linear and rotary actuators, matching globe valves, ball valves, butterfly valves, plug valves and other common industrial control valves.

Q: Do the positioners have local operation and status display functions?

A: Yes, they are equipped with local LED status display and DIP switch calibration buttons, which can realize on-site quick calibration and real-time viewing of equipment running status without additional tools.

For product inquiries, technical support, quotation requests or customized configuration solutions, please contact us directly via the following channels:

wechat/what's app/phone number:+8613472860702

Our professional industrial automation team is ready to provide you with one-stop services including product selection, on-site commissioning and after-sales support.

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• Flowserve Max-Flo Rotary Control Valves
• Flowserve Valve Actuators (Single/Double Acting)
• Flowserve Valve Positioner Accessories (Mounting Kits, Calibration Tools)
• Flowserve ValveSight™ Process Monitoring Software