Neles XH and XS series high-pressure flanged ball valves feature trunnion-mounted, seat-supported designs. They are available in full-bore and reduced-bore configurations, with sizes ranging from DN 150–600 and pressure ratings up to ASME Class 900 or EN PN 160. These valves operate across a wide temperature range from -50 to +600 °C and are primarily used in high-pressure process pipelines in oil and gas processing facilities for frequent shutoff and throttling service.
Neles ball valves, XH and XS series
Neles
Neles XH and XS Series High-Pressure Flanged Ball Valves
High-pressure pipeline ball valves with flanged connections for frequent cycling.
- Category
- Ball Valves
- Size range
- DN 150–600 / NPS 6”–24”
- Pressure rating
- ASME Class 600 and 900 / EN PN 63, 100, 160
Specifications
- Design and mounting method
- Trunnion-mounted, seat-supported ball valve
- Connection type
- Flanged connection
- Bore configuration
- Full-bore and reduced-bore
- Size range
- DN 150–600 / NPS 6”–24”
- Pressure rating
- ASME Class 600 and 900 / EN PN 63, 100, 160
- Face-to-face standard
- ASME B16.10
- Operating temperature range
- -50 to +600 °C / -58 to +1110 °F
Application scenarios
Shutoff and throttling in high-pressure oil and gas process pipelines
Used in high-pressure process pipelines in oil and gas processing facilities for frequent cycling, reliable shutoff or throttling. The XH and XS series allow the seat, materials and coatings to be selected according to the application conditions and use a robust bearing design to meet long-term sealing and operating requirements in demanding service.
Selection points
Trunnion-Mounted, Seat-Supported Design
The trunnion-mounted, seat-supported design is suitable for high-frequency cycling and throttling service.
Coverage of High-Pressure, Large-Bore Sizes
Available in sizes from DN 150 to 600 (NPS 6 to 24), with ASME Class 600 and 900 and EN PN 63, 100, and 160 pressure ratings.
Application-Specific Seats, Materials, and Coatings
The valve seat can be selected according to the application conditions, with suitable materials and surface coatings configured to meet requirements for various severe service conditions.
Installation notes
Verify seat and material configuration against the actual temperature
Before installation, confirm that the seat, materials and coating configuration of the supplied valve is suitable for the process medium and operating temperature at the site. The actual operating temperature must remain within the range of -50 °C to +600 °C (-58 °F to +1110 °F).
Match the flange pressure rating and face-to-face dimension
During installation, verify that the pressure rating and face-to-face dimension of the pipeline flange match those of the valve. Pressure ratings for this series include ASME Class 600 and 900 and EN PN 63, 100 and 160. The face-to-face dimension complies with ASME B16.10.
FAQ
Which demanding process conditions are Neles XH and XS series ball valves suitable for?
Neles XH and XS series ball valves are suitable for high-frequency cycling and throttling service in applications including oil and gas, coal gasification, hydrocarbon and petrochemical processing, and industrial gases. Their design combines application-based seat selection, material and coating technology, and a robust bearing structure, making them suitable for services requiring high sealing reliability and long-term operating stability.
How should XH and XS series ball valves be selected for different media and operating conditions?
Selection should focus on the pipeline size, pressure rating, operating temperature, medium properties, cycling frequency and any throttling requirements. The series offers application-based seat selection and a broad range of material options. The specific configuration must be confirmed according to the actual model and application conditions.
What connection and bore configurations are available for Neles XH and XS series ball valves?
The series features a flanged connection, trunnion-mounted design and seat-supported construction, and is available in full-bore and reduced-bore configurations. The full-bore or reduced-bore configuration should be confirmed based on the pipeline flow requirements, pressure-drop requirements and process conditions.
What are the pressure, temperature and size ranges of Neles XH and XS series ball valves?
The XH series size range is DN 150 to DN 600, equivalent to NPS 6 to 24, and can correspond to ASME Class 600 and EN PN 63 and PN 100. The series covers pressure ratings of ASME 600 and 900 and EN PN 63, PN 100 and PN 160, with a temperature range of -50 to +600 °C. The applicable combination for a specific model must be confirmed according to the actual operating conditions.
What should be considered when using and maintaining Neles XH and XS series ball valves in high-frequency cycling or throttling service?
The valve seat, materials and coating configuration should match the actual medium, temperature, pressure and cycling frequency. Installation should comply with the ASME B16.10 face-to-face requirements. During operation, pay close attention to sealing performance and valve operating condition to support long-term sealing, low-emission operation and stable performance in demanding service.