Pulp stock is a fiber suspension whose behavior depends on consistency, fiber properties, entrained air and contaminants. Selecting its valve as though it were clean water can overlook both hydraulic and mechanical demands.
Describe the stock that reaches the valve
Specify consistency with its measurement basis, fiber source and variation during production. Include possible sand, wire or other rejects, because these can affect jamming and wear differently from fibers alone. Temperature and entrained gas also matter. A single description such as pulp is insufficient for a meaningful selection.
Match regulation and closure
The V-notch edge can support useful modulation and fiber shearing when paired with an appropriate seat. Check whether the valve must also provide a defined shut-off function and under what differential pressure. Frequent closures through stock may require a different actuator and trim assessment than a valve that mainly regulates at steady travel.
Review the full plant sequence
Include grade changes, flushing, start-up and long idle periods. Stock concentration can change during these events. Confirm the flow path, direction and recommended operating procedure. Medium- or high-consistency applications may require dedicated geometry; do not transfer another manufacturer’s special consistency range to a general VPORTA platform.
Practical checklist
- Stock consistency and fiber type.
- Contaminants and maximum credible solids size.
- All flow and pressure cases, including shut-off.
- Flush sequence and expected cycling.
Discuss your application
Send the process conditions and required valve function for a configuration review. Request a technical quotation ↗