The Neles R Series V-port segment valve is designed for precise adjustment and control of industrial fluids. The valve supports flanged or flangeless connections, covers ASME 150 – 600 and PN10 – 100 pressure classes, and can be configured with a rotary dynamic Q-trim noise attenuator to prevent cavitation and reduce noise. It is suitable for liquids, gases, steam, and slurries, meeting fluid control requirements in demanding applications involving high flow rates, wide rangeability, cavitation, and high noise levels.
Neles R Series V-port Rotary Ball Valve for Control Applications
Neles
Neles R Series V-Port Segment Valve for Control Applications
V-port segment valve for high-flow, wide-rangeability fluid control, with optional Q-trim noise attenuator.
- Category
- Segment Valves
- Pressure Class
- ASME 150 – 600, PN10 – 100
- Nominal Size Range
- DN 25 - 800 / 1" - 32"
Specifications
- Valve Type
- V-port segment valve for control applications
- Media
- Liquids, gases, steam, and slurries
- Connection Type
- Flanged / flangeless
- Pressure Class
- ASME 150 – 600, PN10 – 100
- Nominal Size Range
- DN 25 - 800 / 1" - 32"
- Operating Temperature Range
- -52 to +425 °C / -60 to +797 °F
- Shutoff Leakage Class
- Compliant with ANSI/FCI 70-2 Class IV (metal seats) and Class VI (soft seats)
- Face-to-Face Standard
- Compliant with IEC 60534-3-2 / ISA 75.08.02 or IEC 60534-3-1
- Fugitive Emissions Performance Standard
- Compliant with ISO 15848, with a wide temperature range and the highest durability class
- Fire Safety Certification
- Compliant with API 607 7th edition
- Anti-Cavitation and Noise Attenuation Configuration
- Rotary dynamic Q-trim noise attenuator to prevent cavitation and reduce noise
- Installation Orientation
- Supports multiple installation orientations
Application scenarios
Industrial Slurry Flow Control
For slurry flow control in industrial processes. Product documentation explicitly identifies slurry control applications and addresses high-flow and wide-rangeability control requirements.
Steam System Flow Regulation
For flow regulation in steam service. Product documentation explicitly identifies steam control applications and supports a relatively wide operating temperature range.
Control in Cavitation-Prone and High-Noise Operating Conditions
For applications involving liquid or gas control where cavitation risk and flow noise must be reduced. A rotary dynamic Q-trim noise attenuator can be configured to prevent cavitation and reduce noise.
High-Flow, Wide-Rangeability Industrial Fluid Control
For high-flow and wide-rangeability control in industrial fluid pipelines. The product offers a broad nominal size range and is suitable for liquids, gases, steam, and slurries.
Selection points
Rotary dynamic Q-trim configuration for noise reduction and cavitation prevention
Can be configured with a rotary dynamic Q-trim attenuator to prevent cavitation and reduce noise, making it suitable for control applications involving liquids, gases, steam and slurry.
V-port control characteristic combining high flow capacity with a wide rangeability
The R Series V-port rotary ball valve is designed for high-flow and wide-rangeability control requirements, with sizes ranging from 1 inch to 32 inches.
Metal and soft seats for different shutoff leakage classes
The metal seat provides a shutoff leakage class conforming to ANSI/FCI 70-2 Class IV, while the soft seat conforms to Class VI. The appropriate seat design can be selected based on the process medium and allowable leakage.
Wide temperature range, low fugitive emissions and fire-safe performance
The product operating temperature range is -52 to +425 °C. Low-emission performance conforms to ISO 15848, and the product meets the fire-safe requirements of API 607, 7th edition.
FAQ
What media and operating conditions are suitable for the Neles R Series V-port rotary ball valve?
The Neles R Series is suitable for controlling liquids, gases, steam and slurry, with a focus on high-flow and wide-rangeability applications. Its applications include the petrochemical, refining, chemical, pulp and paper industries. The specific configuration must be confirmed based on the medium characteristics, temperature, pressure and control requirements.
How does the R Series combine high flow capacity with low-flow control performance?
The series uses a V-port rotary ball valve design and covers sizes from 1-inch low-flow models to 32-inch valves. It can be used in control loops requiring a broad flow range and stable regulation. Selection should be confirmed based on the required flow range, valve size and pressure-drop conditions.
What role does the rotary dynamic Q-trim attenuator play in control applications?
The R Series can be equipped with a rotary dynamic Q-trim attenuator to prevent cavitation and reduce operating noise. For applications involving high pressure drops, potential cavitation or stringent noise-control requirements, suitability should be evaluated based on the actual medium and operating conditions.
What leakage-control and safety design features does the Neles R Series provide?
The series uses a true integral valve body design without inserts or seat retaining rings, helping reduce potential leakage paths and minimize the impact of pipe bending forces on valve operation. It also features a blowout-proof stem. Its low-emission performance conforms to ISO 15848, and it is certified for fire-safe performance in accordance with API 607, 7th edition.
What shutoff leakage classes can the R Series achieve with metal or soft seats?
The R Series metal seat conforms to ANSI/FCI 70-2 Class IV, while the soft seat conforms to ANSI/FCI 70-2 Class VI. The seat design should be confirmed based on the medium, temperature range, allowable leakage and the applicable conditions for the specific model.