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Neles™ VB Series

About Neles™ VB Series

Neles™ VB series double acting and spring return piston linear actuators are designed for use in both modulating control and on/off service. These actuators offer a very long service life and are suitable for operating linear valves requiring medium to high thrust.

Technical Specifications
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Data sheet
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Description
Neles™ VB series double acting and spring return piston linear actuators are designed for use in both modulating control and on/off service. These actuators offer a very long service life and are suitable for operating linear valves requiring medium to high thrust. They offer robust and reliable operation and are suitable for many types of applications. The high-performance internal coating resists wear and corrosion, and replaceable internal parts ensure long service life.
The VBC is a double acting actuator while the VBR/D are spring return actuators. VBR would be selected for air fail to close and VBD for air fail to open. The VBC can achieve air fail-safe mode with its built-in volume chamber or via an external volume tank. The built-in volume chamber provides the actuator one stroke to reach its fail mode position.

Specifications
Type:
Pneumatic cylinder actuator
Series:
VBC – double acting
VBD/R – spring return
Operating pressure:
2.8 – 10 bar / 40 – 140 psi
Temperature range:
-55 … +120 °C / -67 … +250 °F
Output thrust
16823 – 78160 N / 3781 – 17571 lb.f
Spring range options:
Light spring 1.3 bar – 1.8 bar (19 psi – 25 psi)
General spring 1.8 bar – 2.4 bar (26 psi – 35 psi)
Strong spring 2.3 bar – 2.9 bar (33 psi – 41 psi)

 

Features
  • Piston type linear actuator for modulating control and on/off applications
  • Wear and corrosion resistant design
  • Safe and easy maintenance
  • Suitable for various services, from precise control to arctic conditions
  • Vast number of optional features
  • Rugged design
  • Wide thrust range
  • Spring return and volume chamber options
  • Suitable for safety integrated systems up to and including SIL 3 in accordance with IEC 61508
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