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Neles™ GU / AU series

About Neles™ GU / AU series

Neles™ single seated unbalanced globe valves GU/AU series offer excellent control performance and high reliability in a variety of applications. They are made to be accurate, precise, and reliable in both regular and demanding services. They can be found working for a variety of customers in the oil and gas, chemical, and petrochemical sectors, as well as in power plants and pulp and paper mills.

Technical Specifications
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GU series Data sheet
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AU series Data sheet
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Description

Neles™ single seated unbalanced globe valves GU/AU series offer excellent control performance and high reliability in a variety of applications. They are made to be accurate, precise, and reliable in both regular and demanding services. They can be found working for a variety of customers in the oil and gas, chemical, and petrochemical sectors, as well as in power plants and pulp and paper mills.

With its extensive array of trim and body materials, trim design, and CV per body size the GU/AU series can virtually fit in any application. The rugged 1 piece body minimizes potential leak paths of the valve. The overall design of the Neles™ balanced globe valve allows the trim and seat maintenance to be easily performed in-line via the top of the valve. The valve conforms to ANSI/FCI 70-2 class IV / V with metal seat and VI with soft seat. They can either be used for FTC (flow to close) or FTO (flow to open) applications.

The AU series was designed for high velocity and high-pressure drop applications. The AU series angle body design provides the valve with an internal flow path to handle the noise caused by flashing fluids. For additional noise reduction, the AU/GU series can be coupled with a tendril trim. This multi-hole trim is ideal for cavitation abatement and fluid noise control. It is usually used on high-pressure drop applications where the AU series standard trim and body design needs a little boost.


Specifications
Series
GU
AU
Design
Standard, unbalanced
Angle body, unbalanced
Size range
DN 15 – 150 / 1/2″ – 6″
DN 15 – 150 / 1/2″ – 6″
Pressure classes
ASME 150 – 2500 / PN10 – 320 / JIS 10K – 20K ASME 150 – 2500 / PN10 – 320
Temperature range
-200 °C … +593 °C / -320 °F … +1053 °F
-200 °C … +593 °C / -320 °F … +1053 °F
Features
  • One piece body to minimize the leak paths
  • Top-entry construction and quick-change trim for easy maintenance
  • Rugged top-guided trim construction and hardened trim surfaces for extended lifetime as default
  • Wide variety of trim capacities and characteristics to optimize valve performance
  • Multi-hole Tendril™ trim to reduce noise or to eliminate cavitation
  • Micro trim for extreme low flow applications
  • Wide material selection available for different applications
  • Flanged and welding-end body options
  • Low emissions according to ISO 15848, bellows packing available
  • NACE material options
  • API 607 fire certified
  • Special cleaning optional for oxygen, cryogenic etc. service
  • Industries:
    • Oil and gas production
    • Petrochemicals
    • Chemicals
    • Power plants
    • Pulp & Paper
    • Industrial gas
    • LNG
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