Neles M-Series full-port modular ball valves for pulp and paper applications are available in seat-supported and trunnion-mounted designs with flanged connections. The series covers sizes from DN 25 to 600, supports pressure classes under EN, ASME, JIS, and other international standards, and operates at temperatures from -50 to +260 °C. It also incorporates Q-trim control technology and meets SIL 3 safety integrity requirements. The valves are suitable for shutoff or flow control in pulp and chemical recovery lines handling white liquor, black liquor, and other pulping liquors and chemicals.
Neles modular ball valve, M-Series
Neles
Neles M-Series Modular Ball Valves for Pulp and Paper
Flanged full-port ball valves for pulp liquor shutoff and control
- Category
- Ball Valves
- Size range
- DN 25 – 600/NPS 1”–24” (M1-series)
- Pressure classes
- EN PN 10-40, ASME 150-300, JIS 10K-20K
Specifications
- Connection type
- Flanged connection
- Mounting design
- Seat-supported and trunnion-mounted
- Valve bore design
- Full-port ball valve
- Size range
- DN 25 – 600/NPS 1”–24” (M1-series)
- Face-to-face standard
- M1: ISO 5752
- Pressure classes
- EN PN 10-40, ASME 150-300, JIS 10K-20K
- Operating temperature range
- -50 to +260 °C / -60 to +500 °F
- Control technology
- Neles Q-trim technology
- Safety integrity level
- SIL 3
Application scenarios
Pulp liquor lines associated with cooking and chemical recovery
For shutoff or flow control in pulp liquor and chemical recovery lines, including white liquor and black liquor services in pulp and paper processes. Suitable for process systems such as cooking and kraft liquor recovery.
Selection points
Two designs: seat-supported and trunnion-mounted
The M-Series is available in both seat-supported and trunnion-mounted ball valve designs, allowing the appropriate configuration to be selected according to the equipment and operating conditions.
Neles Q-trim control technology
The M-Series offers Neles Q-trim control technology for applications requiring flow control.
SIL 3 safety integrity level
The M-Series has a SIL 3 safety integrity level and can be considered when selecting and reviewing equipment for relevant safety functions.
Full-port ball valve design
The M-Series uses a full-port ball valve design for pipeline applications requiring an unrestricted flow passage.
Installation notes
Do not use the flanges to forcibly correct pipeline misalignment
When installing flanged M-Series valves, do not use the flange bolts to forcibly pull misaligned piping into position. Avoid applying additional loads to the valve body from adjacent piping.
FAQ
What pulp and paper operating conditions are Neles M-Series modular ball valves suitable for?
The Neles M-Series is optimized for pulp and paper applications, including digesters and fiber lines, stock service, chemical recovery, sludge handling, TMP mills, deinking and recycled fiber mills, steam service, and other paper mill applications. The specific configuration must be confirmed according to the actual model and application conditions.
How do M-Series ball valves combine tight shutoff with flow control?
The series integrates tight shutoff and control performance in a single valve. For control applications, Neles Q-trim technology can be used to help prevent cavitation and reduce noise. Suitability must be confirmed based on the specific operating conditions, valve model, and configuration.
How should the M-Series design and connection class be determined during selection?
The M-Series offers flanged connections and full-port ball valve designs in seat-supported and trunnion-mounted configurations. The M1-series covers sizes from DN 25–600/NPS 1–24, with face-to-face dimensions conforming to ISO 5752. Pressure classes include EN PN 10–40, ASME 150–300, and JIS 10K–20K. Selection should be confirmed based on the pipeline specifications, connection standard, pressure class, and actual application conditions.
What is the operating temperature range of the Neles M-Series?
The specified temperature range for the series is -50 °C to +260 °C (-60 °F to +500 °F). The actual allowable temperature must also be confirmed based on the selected seat type, material options, pressure class, and media conditions.
What value does the modular design provide for valve management in pulp and paper mills?
The M-Series covers multiple seat types, size ranges, and material options for a wide range of pulp and paper applications. Its modular configuration helps simplify product selection, reduce the number of valves required, and lower spare parts inventory management needs. The series is SIL 3 certified.