The Neles GB Series cage-guided globe valve is a balanced, cage-guided globe valve. It can be equipped with multi-hole Tendril valve trim to reduce noise or eliminate cavitation. The valve provides SIL 3 safety integrity and complies with the ISO 15848 fugitive emissions standard. It is suitable for a wide temperature range of -200 to +593 °C and high-pressure applications, including flow control in oil and gas process pipelines, steam and feedwater control in power plants, and cryogenic process control in LNG applications.
Neles cage-guided globe valve, GB Series
Neles
Neles GB Series Cage-Guided Globe Valve
Cage-guided globe valve for oil and gas and steam flow control, with optional cryogenic cleaning
- Category
- Globe Valves
- Nominal size range
- DN 50 - 900 / 2" - 36"
- Pressure ratings
- ASME 150 – 2500 / PN10 – 320 / JIS 10K – 20K
Specifications
- Valve design
- Balanced, cage-guided globe valve
- Nominal size range
- DN 50 - 900 / 2" - 36"
- Pressure ratings
- ASME 150 – 2500 / PN10 – 320 / JIS 10K – 20K
- Operating temperature range
- -200 to +593 °C / -320 to +1053 °F
- Leakage class
- ANSI/FCI 70-2 Class IV/Class V (metal seat) and Class V (soft seat)
- End connections
- Flanged ends, welded ends
- Valve trim type
- Heavy-duty cage-guided valve trim with hardened trim surfaces as standard
- Flow characteristics
- Multiple valve trim flow capacities and flow characteristics available
- Noise reduction and anti-cavitation design
- Multi-hole Tendril valve trim to reduce noise or eliminate cavitation
- Fugitive emissions standard
- ISO 15848
- Packing options
- Bellows packing available
- Material compatibility options
- NACE material options available
- Safety integrity level
- SIL 3
- Fire-safe certification
- API 607
- Special cleaning options
- Special cleaning for oxygen service and cryogenic applications available
Application scenarios
Flow control in oil and gas process pipelines
Used for flow control in oil and gas and petrochemical process pipelines. The GB Series supports precise flow control and offers NACE material options and ISO 15848 low-emission configurations for selection according to operating conditions.
Steam and feedwater control in power plants
Used for control in process pipelines such as power plant steam and feedwater systems. The GB Series uses a balanced cage-guided design and heavy-duty cage-guided valve trim to provide stable and precise flow control.
Cryogenic process control for LNG
Used for flow control in LNG cryogenic media processes. The valve supports operating temperatures as low as -200 °C and can be configured with special cleaning for cryogenic service, bellows packing and ISO 15848 low-emission options.
Selection points
Balanced heavy-duty cage-guided trim
The GB Series uses balanced, heavy-duty cage-guided trim. Product documentation explicitly supports this configuration, making it suitable for applications where control stability and trim durability are important.
Noise and cavitation reduction with multi-hole Tendril trim
The valve can be equipped with optional multi-hole Tendril trim to reduce noise or eliminate cavitation, making it suitable for applications with high pressure drops or noise and cavitation risks.
Trim maintenance without pipeline removal
The valve does not need to be removed from the pipeline when components are replaced, helping reduce piping disassembly work and simplify maintenance.
ISO 15848 low emissions and bellows seal packing options
The product complies with ISO 15848 low-emission requirements and can be equipped with bellows seal packing, making it suitable for applications requiring control of fugitive emissions around the valve stem.
Configurations for severe media and safety compliance
The product offers NACE material options, special cleaning options for oxygen and cryogenic service, SIL 3 safety integrity, and API 607 fire-safe certification, supporting selection reviews for relevant media and safety compliance requirements.
Installation notes
Allow sufficient overhead maintenance clearance
During installation, provide sufficient operating and disassembly space above the valve so that internal trim and related components can be replaced while the valve body remains connected to the pipeline.
Confirm special cleaning for specific services
For oxygen or cryogenic service, confirm before installation that the valve has been configured with the appropriate special cleaning.
FAQ
How does the Neles GB Series cage-guided globe valve provide stable and precise flow control?
The GB Series uses a balanced, cage-guided design and can be equipped with Neles diaphragm or piston actuators and valve controllers. Multiple valve trim flow capacities and flow characteristics can be selected to match different control requirements, supporting stable and precise process flow regulation.
How should the GB Series be selected for control applications with high pressure differentials or a risk of noise or cavitation?
For applications with a risk of noise or cavitation, multi-hole Tendril valve trim can be considered. It is designed to reduce noise or eliminate cavitation. Selection should also consider the actual size, pressure rating, temperature range, flow capacity, flow characteristics, seat leakage class and process medium conditions to determine the appropriate configuration.
What size, pressure and temperature ranges does the Neles GB Series cover?
The GB Series covers sizes from DN 50 to DN 900 (2 inches to 36 inches), pressure ratings from ASME 150 to 2500, PN10 to PN320 and JIS 10K to 20K, and temperatures from -200 to +593 °C. The specific configuration must be confirmed according to the actual model and application conditions.
What maintenance and long-term operating advantages does the GB Series offer?
The series features a top-entry design and quickly replaceable valve trim, allowing component replacement without removing the valve from the pipeline. The integral body reduces potential leakage paths, while the heavy-duty cage-guided valve trim uses hardened surfaces as standard, helping extend service life and reduce maintenance requirements.
What configuration options does the GB Series offer for fugitive emissions, safety and special media applications?
The GB Series complies with ISO 15848 fugitive emissions requirements and can be equipped with bellows packing. It also offers NACE material options, SIL 3 certification and configurations related to API 607 fire-safe certification. For oxygen, cryogenic and other special applications, corresponding special cleaning configurations are available. Suitability must be confirmed according to the actual model and application conditions.