The Neles Omega GM series globe control valve is designed for severe service conditions such as high differential pressure, cryogenic and low-emission applications. It supports flanged and welded connections, covers operating temperatures from -200 to +593 °C, and offers SIL 3 safety integrity with compliance to the ISO 15848 low-emission standard. Optional Omega multi-stage trim and bellows packing are available for high differential pressure flow control, cryogenic pipeline regulation, and low-emission control systems handling demanding media.
Neles Omega globe control valve, GM series
Neles
Omega GM Series Severe Service Globe Control Valve | Neles
Product code: GM
A globe control valve designed for severe service conditions such as high differential pressure, cryogenic and low-emission applications, available with flanged or welded end connections.
- Category
- Globe Valves
- Size Range
- DN 25 - 900 / 1" - 36"
- Pressure Rating
- ASME 150 – 2500 / PN10 – 320 / JIS 10K – 20K
Specifications
- Valve Body Design
- Unbalanced, top-guided; balanced, cage-guided
- Size Range
- DN 25 - 900 / 1" - 36"
- Pressure Rating
- ASME 150 – 2500 / PN10 – 320 / JIS 10K – 20K
- Operating Temperature Range
- -200 to +593 °C / -320 to +1053 °F
- Shutoff Class
- ANSI/FCI 70-2 Class IV / V (metal seat); Class V (soft seat, balanced); Class VI (soft seat, unbalanced)
- End Connections
- Flanged ends, welded ends
- Trim Design
- Omega multi-stage stacked-disc trim; top-guided or heavy-duty cage-guided
- Trim Stages
- Multi-stage trim available
- Trim Material Treatment
- Hardened trim surfaces as standard
- Low-Emission Standard
- ISO 15848
- Safety Integrity Level
- SIL 3
- Fire-Safe Certification
- API 607
- Material Options
- NACE material options available
- Special Cleaning Options
- Oxygen-service cleaning and cryogenic-service cleaning available
- Bellows Seal Option
- Bellows seal available
Application scenarios
Process fluid flow control under high pressure differentials
For control loops requiring stable process fluid flow regulation where high pressure differentials, noise, or cavitation pose a risk. The GM Series can be equipped with optional Omega multistage plug-stack trim, which reduces noise or cavitation through staged pressure reduction, and works with an actuator and valve controller to provide precise flow control.
Cryogenic process pipeline control
For flow regulation in cryogenic process pipelines. The GM Series operates at temperatures as low as -200 °C and offers clean-service options for cryogenic applications, meeting process requirements for valve temperature resistance and cleanliness.
Low-emission control for demanding media
For demanding media applications where valve external leakage control is required. The GM Series complies with ISO 15848 low-emission requirements and can be equipped with bellows packing and NACE materials to meet specific low-emission and material compatibility requirements.
Selection points
Omega multistage plug-stack trim
Uses Omega multistage plug-stack trim for demanding control applications where noise or cavitation must be controlled.
Balanced and unbalanced guiding structure options
Offers a choice of unbalanced top-guided construction or balanced valve body and trim construction with cage guiding.
Wide temperature range
Operating temperature range from -200 to +593 °C, suitable for applications ranging from cryogenic to high-temperature service.
Low emissions, functional safety, and fire protection certifications
Complies with ISO 15848 low-emission requirements, provides SIL 3 safety integrity level capability, and has API 607 fire-safe certification.
Maintenance without pipeline removal
Components can be replaced without removing the valve from the pipeline, simplifying maintenance.
Installation notes
Verify Oxygen or Cryogenic-Service Cleaning Configuration
For oxygen or cryogenic service, confirm before installation that the valve is configured with the applicable oxygen-service or cryogenic-service cleaning option.
FAQ
How does the Neles Omega GM series globe control valve reduce noise and cavitation risk in high pressure drop applications?
The GM series uses Omega multi-stage stacked disc trim technology that handles high pressure drops through multi-stage pressure reduction, making it suitable for noise or cavitation suppression. The valve is available with different trim capacities, flow characteristics and numbers of stages, allowing performance to be optimized based on the actual differential pressure, media and control requirements.
How should you choose between the unbalanced top-guided design and the balanced cage-guided design for the GM series globe control valve?
The GM series offers unbalanced top-guided and heavy-duty balanced cage-guided designs. Selection should be confirmed based on the required leakage class, flow control requirements, differential pressure, media conditions and actuator configuration. Metal seats meet ANSI/FCI 70-2 Class IV or V, while soft seats achieve Class V in balanced designs and Class VI in unbalanced designs. The specific configuration must be confirmed according to the actual model and application conditions.
Which industrial processes and media conditions is the Neles Omega GM series suitable for?
The series is suitable for demanding control loops that require stable process control and the ability to handle noise or cavitation issues. It can be used in oil and gas production, petrochemicals, chemicals, power plants, pulp and paper, industrial gases and LNG, among other industries. Its temperature range is -200 to +593 °C, with a wide choice of materials, flanged or welded end valve bodies, and special cleaning options for oxygen and cryogenic service.
Does maintenance of the GM series globe control valve require removing the valve from the pipeline?
The GM series features a top-entry design and quickly replaceable trim, so components can typically be replaced without removing the valve from the pipeline. Its one-piece body reduces leakage paths, while the robust top-guided or heavy-duty cage-guided trim and standard hardened surfaces help extend service life and reduce maintenance requirements.
What low-emission and safety-related configurations are available for the GM series globe control valve?
The GM series complies with ISO 15848 low-emission requirements, with optional bellows packing. NACE material options are also available, along with SIL 3 certification and API 607 fire-safe certification. For special services such as oxygen and cryogenic applications, special cleaning configurations can be selected; the specific configuration must be confirmed according to the actual model and application conditions.