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Neles™ ValvGuard™ VG9000

About Neles™ ValvGuard™ VG9000

Neles™ ™ ValvGuard™ ™ VG9000 is a new generation intelligent safety solenoid with partial stroke testing features. It can be used both with emergency shutdown (ESD) and emergency venting (ESV) valves.

Technical Specifications

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Description

Neles™ ValvGuard™ VG9000 is a new generation intelligent safety solenoid with partial stroke testing features. It can be used both with emergency shutdown (ESD) and emergency venting (ESV) valves.

With VG9000, plant safety can be increased due to extensive safety valve testing capabilities and improved diagnostics data. Neles™ ValvGuard™ ’s unique construction enables the diagnostics part of the device to be alive all the time and not depending on the safety part. This is a true user benefit and gives maximum availability of the diagnostics information. The VG9000 is thus capable to record emergency trips with graphs and key figures related to it. Diagnostic information is presented in a logical understandable way to enable planned maintenance of potentially failing valve assemblies before they have a chance to impact your process or safety.

Neles™ VG9000 features automatic Partial Stroke Test (PST), emergency trip test, and internal pneumatics test. The safety valve condition can be constantly monitored with the diagnostics data gained from the performed tests. Extra instrumentation and parallel limit switch mounting are unnecessary because Neles™ VG9000 has market-leading pneumatics capacity and optional internal limit switches. VG9000 is available for FOUNDATION fieldbus and HART communication. In addition to improved safety, VG9000 provides real-time alarm management without extra costs.

The further enhanced version of the ValvGuard™ offering features an intelligent PST solution called VG9PST. This latest development provides excellent protection against spurious trips when a customer uses an external solenoid valve, reducing the risk of consequent unwanted and costly plant shutdown.


Specifications
VG9000H & VG9PST
Loop powered, 4/20 mA (or 24 VDC via RCI unit)
VG9000F
FF + 24 VDC
Communication
HART (VG9000H) or FOUNDATION fieldbus (VG9000F)
Temperature range
-40 °C … +85 °C
Material
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)
Features
  • SIL 3 certified according to IEC 61508
  • Self testing includes partial stroke tests (automatic or manual), internal components integrity tests (pneumatic and electronic) and emergency trip test
  • Device is powered during the trip and can collect diagnostics information
  • Advanced diagnostics including self-diagnostic, online diagnostic and performance diagnostic
  • HART and FOUNDATION Fieldbus communication options
  • VG9PST version together with external solenoid valve for spurious trip prevention
  • Applications:
    • ESD, emergency shutdown services
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