The Neles ND9000 is a next-generation intelligent valve controller engineered for ultimate reliability and performance in severe service applications. Supporting HART 7, FOUNDATION Fieldbus, and Profibus PA, it delivers ±0.35% positioning accuracy with comprehensive online predictive diagnostics through Neles Valve Manager. The patented low-bleed pneumatic relay consumes less than 0.15 Nm³/h in steady state, while the non-contact linear/rotary sensor ensures lifelong precision. With SIL 3 certification, IP66/IP67 enclosure, and extreme temperature options (-55°C to +90°C), the ND9000 is the benchmark for safety-critical control in LNG, nuclear, and offshore environments.
| Parameter | Specification |
|---|---|
| Input Signal | 4-20 mA HART 7 / FF H1 / Profibus PA |
| Positioning Accuracy | ±0.35% of span |
| Air Supply | 1.4–8 bar (20–115 psig) |
| Air Consumption | less than 0.15 Nm³/h (steady), less than 2.5 Nm³/h (dynamic) |
| Temperature Range | -55°C to +90°C |
| Enclosure | IP66/IP67, NEMA 4X |
| Hazardous Area | ATEX, IECEx, FM, CSA, NEPSI (IS/Ex d) |
| SIL Capability | SIL 3 (IEC 61508) |
| Diagnostics | Valve Manager (advanced signature, PST, performance metrics) |
| Weight | 3.0 kg (aluminum), 6.5 kg (316L SS) |
SIL 3 per IEC 61508 with certified FMEDA.
less than 0.15 Nm³/h in steady state — industry-leading.
Yes, fully certified Profibus PA profile 3.02.
Yes, certified down to -55°C with low-temp option.
Friction analysis, stiction index, step response, and health scoring.
For more information about the Neles ND9000, pricing, or to request a demo, contact our team:
