Description

METSO NE724/S1 Electro‑Pneumatic Valve Positioner

Technical Specifications

• Product Model: NE724/S1
• Brand: Metso / Neles (Valmet)
• Warranty: One Year
• Input Signal: 4‑20 mA DC / 0‑20 mA DC analog control signal, split‑range support 4‑12 mA / 12‑20 mAManualsLib
• Supply Air Pressure: 1.4‑8 bar (21‑115 psi) supply rangeManualsLib
• Actuator Type: Single‑acting spring‑return actuator (S1 = single‑action version)
• Feedback Shaft Rotation: Max 90° rotation angle
• Enclosure Class: IP54 aluminium alloy housingManualsLib
• Operating Temperature: ‑25 °C ~ +85 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Air Consumption: 0.9 Nm³/h static consumptionValmet
• System Compatibility: Pneumatic linear / rotary spring‑return control valves
• Diagnostics: Local mechanical valve‑position indicator, zero‑range manual adjustment mechanism
• Humidity: 5‑95 % RH non‑condensing
• Weight: 2.2 kg
• Dimensions: Standard NE‑series positioner housing footprint
• 

Product Overview

NE724/S1 is analog electro‑pneumatic valve positioner for single‑acting spring‑return pneumatic actuators. It converts 4‑20 mA control signal from DCS/PLC into pneumatic output pressure to accurately adjust valve stroke position. Mechanical cam‑based feedback loop provides stable positioning performance. Widely used in petrochemical, power‑plant and chemical‑process control‑valve loops. Discontinued legacy analog positioner; surplus and refurbished tested spare instrument for plant maintenance projects.

Application Notes

‑ Perform zero‑and‑range calibration after mounting on actuator. ‑ Install clean filtered instrument air supply. ‑ Check feedback linkage mechanical clearance during routine maintenance. ‑ Typical deployment: Single‑acting analog valve positioner spare‑part stocking.