Smart valve positioners are widely used with pneumatic control valves to improve positioning accuracy, response, diagnostics and communication with plant control systems.
The following table provides a quick technical comparison of several commonly used smart valve positioners from Samson, Fisher, Siemens, Foxboro, Neles and Rotork YTC, covering mounting, travel range, communication protocols, air supply, air consumption, accuracy, environmental ratings and other key specifications.
Smart Valve Positioner Technical Comparison 2026
| Technical Item | SAMSON | Fisher | Siemens | Foxboro | Metso Neles | Rotork YTC |
|---|---|---|---|---|---|---|
| Model | 3730 | DVC6000 | SIPART PS2 | SRD991 | ND9000 | YT3300 |
| Mounting / Connection | ||||||
| IEC 60534-6-1 Linear Actuator, Cast Yoke Rib | Yes | Yes | Yes | Yes | Yes | Yes |
| Rod-Type Bracket | Yes | Yes | Yes | Yes | Yes | Yes |
| IEC 60534-6-2 Rotary Actuator | Yes | Yes | Yes | Yes | Yes | Yes |
| Integrated Mounting | Yes | — | — | — | Yes | Yes |
| Linear Travel Range | 3.6–200 mm | 0–102 mm | 3–130 mm | 8–260 mm | 10–120 mm | 10–150 mm |
| Rotary Angle Range | 24–100° | 0–50–90° | 30–100° | 30–95° | 45–95° | 0–90° |
| Signal Characterization | Linear, Equal Percentage, Reverse Equal Percentage, User-Defined | — | — | — | — | Linear, Quick Opening, Equal Percentage, User-Defined |
| Input / Communication | ||||||
| 4–20 mA DC | Yes | Yes | Yes | Yes | Yes | Yes |
| 4–20 mA DC + HART | Yes | Yes | Yes | Yes | Yes | Yes |
| PROFIBUS | Yes | — | Yes | Yes | Yes | — |
| FOUNDATION Fieldbus (FF) | Yes | Yes | Yes | Yes | Yes | — |
| Minimum Operating Current | 3.8 mA | 3.5 mA | 3.6 mA | 3.6 mA | 3.6 mA | 3.2 mA; HART: 3.8 mA |
| Air Supply Pressure | 1.4–6 bar | 0.3 bar above actuator required supply pressure | 1.4–7 bar | 1.4–7 bar | 1.4–8 bar | 1.4–7 bar |
| Steady-State Air Consumption | 0.11 Nm³/h | 1.4 Nm³/h | 3.6 Nm³/h | 0.11 Nm³/h | 0.4 Nm³/h | 0.12 Nm³/h |
| Pneumatic Output System | I/P + Pneumatic Amplifier | I/P + Pneumatic Amplifier | Piezoelectric Valve | I/P + Pneumatic Amplifier | Piezoelectric Valve + Pneumatic Spool Valve | — |
| Supply / Output Pressure Sensor | No | Yes | No | No | Yes | — |
| Emergency Shutoff Function | Automatic, Adjustable | — | Automatic, Adjustable | — | — | — |
| Deviation / Linearity | <1% of Characteristic | ±0.5% of Output Span | — | Non-Linearity: 0.4% | — | Linearity: 0.5% |
| Sensitivity | 0.10% | — | — | 0.10% | 0.10% | 0.20% |
| Hysteresis | 0.30% | — | — | 0.30% | 0.50% | 0.50% |
| Ingress Protection | IP66 | — | IP65 | IP65 | IP65 | IP66 |
| Explosion Protection | Ex ia, Ex n, Ex d | Ex ia, Ex n, Ex d | Ex ia, Ex n, Ex d | Ex ia | Ex ia | Ex ia IIC T6 |
| Ambient Temperature | -40 to +80°C | -40 to +80°C | -30 to +80°C | -40 to +80°C | -40 to +85°C | -40 to +85°C |
| SIL Rating | SIL 4 | — | — | SIL 2 | — | SIL 2 |
| Dimensions (W × L × H) | 86 × 164 × 80 mm | 206 × 235 × 156 mm | 182 × 95 × 96.6 mm | 175 × 139 × 98 mm | 140 × 134 × 114 mm | 240 × 93 × 107 mm |
| Weight | 1.0 kg, die-cast aluminum | 3.5 kg, die-cast aluminum | 1.3 kg, die-cast aluminum | 1.7 kg, die-cast aluminum | 1.8 kg, die-cast aluminum | 2.0 kg, die-cast aluminum |
Selection Note:
The specifications above are intended for general comparison only. Actual performance, communication options, hazardous-area approvals and environmental ratings may vary according to the exact model and configuration. Final selection should always be confirmed against the manufacturer’s current datasheet and the control valve actuator requirements.
THINKTANK has more than 30 years of experience in control valve engineering and can supply control valves equipped with Fisher, Siemens, Samson, Rotork YTC and other international positioner brands. We also support replacement of existing branded control valves with technically compatible and more cost-effective solutions.
