The Neles MC Series R2 V-port segment valve is an industrial valve specifically designed for medium-consistency pulp flow control. The valve features flanged connections and a self-adjusting metal seat. It is available in sizes from DN 50 to 500, supports PN 25 and ASME 150 pressure classes, and operates at temperatures from -40 to +260 °C. Its unique V-port flow path enables precise low-flow control, effectively reducing the risk of dewatering. The continuously expanding flow path also reduces the buildup of 8-19% medium-consistency pulp in locally restricted sections of the pipeline.
Neles MC V-Port Segment Valve, R2 Series
Neles
Neles MC V-Port Segment Valve Series R2
V-port segment valve for medium-consistency pulp flow control, with flanged connections
- Category
- Segment Valves
- Applicable Medium Concentration
- Medium-consistency pulp, 8-19%
- Nominal Size Range
- DN 50 - 500 / 2" - 20"
Specifications
- Applicable Medium Concentration
- Medium-consistency pulp, 8-19%
- Connection Type
- Flanged connection
- Nominal Size Range
- DN 50 - 500 / 2" - 20"
- Pressure Rating
- PN 25 / ASME 150
- Operating Temperature Range
- -40 to +260 °C
- Flow Path Profile
- V-port flow path
- Seat Type
- Self-adjusting metal seat
Application scenarios
Flow control in medium-consistency pulp pipelines
For flow control in pipelines conveying 8-19% medium-consistency pulp. The V-port flow path supports low-flow control and reduces the risk of dewatering, while the continuously expanding flow path helps reduce pulp buildup in locally restricted sections.
Selection points
Designed for Medium-Consistency Pulp
The R2 Series is specifically designed for medium-consistency pulp applications with concentrations of 8-19%.
Gradually Expanding Flow Path and Oversized Outlet Flange
The flow path gradually expands, and the outlet flange is one size larger than the inlet flange, reducing narrow areas where material could accumulate.
V-Port Flow Path for Low-Flow Control Without Dewatering
The V-port flow path enables low-flow control without the risk of dewatering.
Self-Adjusting Metal Seat
The self-adjusting metal seat provides a seat configuration suitable for medium-consistency pulp service.
Installation notes
Install with the smaller inlet and larger outlet oriented correctly
The Series R2 outlet flange is one size larger than the inlet flange, and the flow path gradually expands. During installation, connect the pipeline according to the valve's actual inlet and outlet directions to avoid reversing the installation, which could compromise the flow path design and increase the risk of medium-consistency pulp buildup.
FAQ
What pulp applications are the Neles MC R2 Series V-Port Segment Valves suitable for?
The R2 Series is specifically designed for 8% to 19% medium-consistency pulp applications. It is suitable for services requiring stable pulp flow regulation and uses materials suitable for chlorine dioxide bleaching stages. The specific configuration must be confirmed based on the actual model and application conditions.
How does the R2 Series reduce the risk of medium-consistency pulp accumulating inside the valve?
The series uses an optimized, gradually expanding flow path that reduces narrow areas where material could accumulate. Its outlet flange is one size larger than the inlet flange, helping maintain continuous expansion of the flow path.
How does the V-port flow path of the R2 Series support low-flow control?
The V-port flow path enables low-flow regulation and reduces the risk of pulp dewatering during control, supporting control performance in medium-consistency pulp service.
What are the size, pressure and temperature ranges of the R2 Series valves?
The R2 Series features a flanged connection, a nominal size range of DN 50 to DN 500 (2 inches to 20 inches), pressure ratings of PN 25 or ASME 150, and an applicable temperature range of -40 to +260 °C. Final selection must also consider the medium, piping class and application conditions.
What design features of the R2 Series support installation and maintenance?
The series features an integral valve body, a robust and durable self-adjusting metal seat, and a protected bearing structure. It also supports multiple installation orientations. These features facilitate installation and long-term operation and maintenance. The specific installation orientation and maintenance requirements must be confirmed based on the actual model and application conditions.