Valmet Neles ND Series Smart Valve Positioner Product Introduction
Product Overview
The Valmet Neles ND Series, including models ND9103HX8T, ND9106HX8T, ND9203HE8T, ND9206HE8T and ND7106HX8, are advanced smart electro-pneumatic valve positioners. They deliver precise and reliable control for industrial valves.
These positioners use digital technology to ensure accurate valve positioning. They provide real-time feedback for optimal performance in critical process control applications. The devices are loop-powered, integrating seamlessly with 4-20mA control signals and HART communication protocols. This enables remote monitoring and configuration.
Features
- Smart Digital Control: Utilizes microprocessor-based technology for precise valve positioning and quick response times.
- Dual Acting & Single Acting Compatibility: Supports both actuator types to suit different valve configurations.
- HART Communication: Enables remote diagnostics, configuration, and monitoring for improved maintenance efficiency.
- Robust Construction: IP66/IP67-rated enclosure for reliable operation in harsh industrial environments.
- Automatic Calibration: Streamlines setup with one-button calibration to reduce installation time.
- Advanced Diagnostics: Provides real-time data on valve performance, helping predict maintenance needs.
- Wide Temperature Range: Operates stably in extreme temperatures from -40°C to +85°C.
Technical Specifications
| Parameter |
Details |
| Input Signal |
4-20 mA DC, HART 7 compatible |
| Supply Pressure |
0.2 to 0.7 MPa (2 to 7 bar) |
| Output Pressure Range |
0.02 to 0.6 MPa (0.2 to 6 bar) |
| Positioning Accuracy |
±0.25% of full scale |
| Enclosure Protection |
IP66 / IP67 |
| Ambient Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Communication Protocol |
HART 7, FOUNDATION Fieldbus (optional on select models) |
| Mounting Standard |
IEC 60534-6-1 / VDI/VDE 3845 |
Applications
The Valmet Neles ND Series positioners are engineered for critical process control in industries requiring high reliability:
- Oil & Gas: Onshore and offshore production, refining, and pipeline systems
- Petrochemical & Chemical: Polymer production, specialty chemical manufacturing, and continuous process plants
- Power Generation: Thermal power plants, combined-cycle facilities, and waste-to-energy systems
- Pulp & Paper: Digester control, bleaching processes, and stock preparation
- Water & Wastewater: Treatment plants, pumping stations, and distribution networks
- Mining & Metals: Mineral processing, smelting operations, and material handling systems
FAQ
Q: What is the difference between ND9100 and ND9200 series models?
A: The ND9100 series is designed for quarter-turn valves (ball, butterfly, plug valves), while the ND9200 series is optimized for linear valves (globe, control valves).
Q: Can these positioners be used in hazardous areas?
A: Yes, select models are ATEX, IECEx, and CSA certified for use in Zone 1/21 and Zone 2/22 hazardous locations.
Q: How often do I need to calibrate the positioner?
A: With automatic calibration functionality, routine calibration is typically only needed every 2–3 years or after maintenance.
Q: Is HART communication required for operation?
A: No, the positioners operate with a basic 4-20mA signal, but HART unlocks remote configuration and diagnostic capabilities.
Contact Us
For inquiries, technical support, or to request a quote, reach out to us directly:
wechat/what's app/phone number:+8613472860702
Our team of industrial automation experts is ready to assist with product selection, configuration, and after-sales support.
Related Products
- Valmet Neles NDX Series Digital Valve Controllers
- Valmet Neles Q-DISC™ Control Valves
- Valmet Neles Ball and Butterfly Valves
- Valmet Neles Valve Positioner Accessories (Mounting Kits, Sensors)
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