Flowzone Engineering Solution

Neles™ ValvGuard™ VG9000 – intelligent safety solenoid

The Neles ValvGuard is a premier safety solenoid with intelligent features for partial stroke testing, designed for emergency shutdown and venting valves. By utilizing automatic PST and other diagnostic data, the VG9000 enhances safety and enables plant safety objectives to be met with greater cost efficiency than alternative solutions.

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  • Ensuring secure and dependable operation of ESD valves
  • Minimizing expenses through reduced installation and maintenance costs
  • Facilitating straightforward installation, setup, and system integration
  • Predictive maintenance


  • The Neles ValvGuard features a unique design that enables continuous operation of its diagnostics component independent of the safety mechanism, allowing for maximum availability of diagnostic information.
  • With its sizeable pneumatic capacity and built-in diagnostic features, the VG9000 guarantees the dependability and accessibility of ESD and ESV valves.
  • Diagnostic information is presented in an easily understandable manner, enabling planned maintenance of valve assemblies at risk of failure before they can compromise safety or the production process.
  • We have also introduced the VG9PST, an intelligent PST solution that offers superior protection against spurious trips when using an external solenoid valve, thereby reducing the risk of unintended and costly plant shutdowns.
  • Additionally, the ValvGuard is certified for SIL 3 according to IEC 61508, provides emergency shutdown services, and features a stainless steel construction suitable for off-shore applications.


VG9000H & VG9PST:
Loop powered, 4/20 mA (or 24 VDC via RCI unit)
FF + 24 VDC
HART (VG9000H) or FOUNDATION fieldbus (VG9000F)
Temperature range:
-40 °C … +85 °C
Anodized aluminum or stainless steel
Max exhaust capacity:
700 Nm3/h (Cv 6.4)
Hazardous area approvals:
Ex d, Ex ia (for complete list see technical bulletin)


  • Technical bulletin
  • Installation, maintenance and operation manual, VG9000H Rev. 2.3
  • Installation, maintenance and operation manual, VG9000F Rev. 2.1
  • INeles valve controls product offering brochure
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