The Neles RotaryGlobe ZX series control valve is a flanged control valve that combines rotary valve and linear-motion valve technologies. The series is available in nominal sizes DN 15-100 and supports high-pressure ratings from PN 40-250. It operates reliably across a wide temperature range of -80 to +425 °C and complies with TA-Luft low-emission requirements and API 607 fire-safe certification. Multiple trim configurations are available to adjust the flow coefficient, making the valve suitable for flow control in power plants, industrial steam systems, and process liquid, gas, and steam applications under demanding operating conditions.
Neles RotaryGlobe ZX series control valve
Neles
Neles RotaryGlobe ZX Series Control Valve
Control valve for process liquid, gas, and steam regulation, supporting multiple trim configurations.
- Category
- Globe Valves
- Body pressure rating
- PN 40 - 250 / ASME Class 150 - 1500
- Nominal size
- DN 15 - 100 / 1/2" - 4"
Specifications
- Valve design
- Combination of rotary valve and linear-motion valve technologies
- Applicable media
- Process liquids, gases, and steam
- Body connection
- Flanged connection
- Body pressure rating
- PN 40 - 250 / ASME Class 150 - 1500
- Nominal size
- DN 15 - 100 / 1/2" - 4"
- Operating temperature range
- -80 to +425 °C / -110 to +797 °F
- Face-to-face dimensional standard
- IEC 60534-3-1 / ISA 75.08.01, globe valve length
- Seat leakage class
- ANSI/FCI 70-2 Class IV
- Low-emission standard
- TA-Luft / VDI 2440
- Fire-safe certification
- API 607 6th edition
- Installation orientation
- Supports multiple installation orientations
- Trim configurations
- Multiple trim configurations, flow coefficients, and flow characteristics available
Application scenarios
Flow control in power plants and industrial steam systems
Used for flow control in industrial steam or auxiliary steam lines in power plants. The series is suitable for steam service, supports multiple trim configurations, and operates across a temperature range of -80 to +425 °C for stable control under specified operating conditions.
Process media control under demanding operating conditions
Used for the control and regulation of process liquids, gases, or steam under demanding operating conditions. The series is designed for general and demanding control valve applications and offers multiple trim configurations, flow coefficients, and flow characteristics, providing reliable and stable control.
Selection points
Combination of Rotary Valve and Linear Valve Technologies
The ZX Series combines rotary valve and linear valve technologies for regulating process liquids, gases, and steam.
Low Operating Torque
The series features low operating torque, which can be considered when selecting a compatible actuator.
Multiple Trim and Flow Characteristic Configurations
The product offers multiple trim configurations, flow coefficients, and flow characteristics, enabling configuration selection according to specific control conditions.
Low-Emission and Fire-Safe Compliance
The product complies with TA-Luft and VDI 2440 low-emission requirements and has API 607 6th Edition fire-safe certification.
Globe Valve Face-to-Face Dimension Standard
The product face-to-face dimensions comply with the globe valve lengths specified in IEC 60534-3-1 and ISA 75.08.01.
Installation notes
Confirm that the operating temperature is within the applicable range
Before installation, confirm that the actual operating temperature is within the ZX series specified range of -80 to +425 °C.
FAQ
What operating principle does the Neles RotaryGlobe ZX series control valve use, and which media is it suitable for controlling?
The Neles RotaryGlobe ZX series combines the technical advantages of rotary and linear-motion valves, providing stable regulation through a rotary stem and multiple trim configurations. The series is designed for controlling process liquids, gases, and steam in both general and demanding control valve applications.
How should the ZX series control valve be selected to meet high pressure-drop and control-precision requirements?
Selection should take into account the actual medium, pressure rating, temperature, size, required flow coefficient, and flow characteristic. The ZX series offers multiple trims, flow coefficients, and flow characteristics, as well as a wide turndown ratio, making it suitable for high-pressure-drop applications. The specific configuration must be confirmed based on the actual model and application conditions.
What advantages does the Neles RotaryGlobe ZX have over conventional linear-motion globe-style control valves?
The ZX series combines rotary and linear-motion valve designs. While maintaining good control precision, it offers a simple construction, low operating torque, and stable control. The thrust bearing is located outside the pressure boundary, and the valve uses a blowout-proof stem design, helping improve operating reliability and reduce maintenance costs.
What industrial facilities and process conditions are suitable for the ZX series control valve?
The series is suitable for the refining, petrochemical, chemical, and power industries and can control process liquids, gases, and steam. Its specifications cover DN 15 to DN 100, PN 40 to PN 250, or ASME Class 150 to Class 1500, with a temperature range of -80 to +425 °C. Suitability must be confirmed based on the actual model and application conditions.
What technical features does the ZX series provide for fugitive emissions, sealing, and safety performance?
The ZX series achieves low emissions in accordance with TA-Luft/VDI 2440 and has fire-safe certification according to API 607 6th edition. The valve has a sealing class of ANSI/FCI 70-2 Class IV and supports multiple installation orientations. Installation and maintenance should be carried out with reference to the actual process conditions and selected model.