Full Bore (Full Port)
A valve where the internal bore diameter equals the nominal pipe bore, resulting in minimal pressure drop. Required for pig-launching lines, slurry service, viscous fluids, and systems with tight pressure budgets. Opposite: Reduced Bore.
Related Terms
Related Products
Frequently Asked Questions
What is Full Bore (Full Port) in the context of industrial valves?
A valve where the internal bore diameter equals the nominal pipe bore, resulting in minimal pressure drop. Required for pig-launching lines, slurry service, viscous fluids, and systems with tight pressure budgets. Opposite: Reduced Bore.
How does Full Bore (Full Port) affect valve selection and sizing?
A valve where the internal bore diameter equals the nominal pipe bore, resulting in minimal pressure drop. Valve sizing must account for this phenomenon to prevent premature failure, excess noise, and vibration. For control valves, ISA-75.01 and IEC 60534-2-1 cover sizing for incompressible and compressible flow. Vajra Industrial Solutions can assist with valve sizing calculations - contact sales@vajravyuh.com with your process data sheet.
What valve types minimise Full Bore (Full Port) problems?
The choice of valve type and trim significantly affects susceptibility to flow-related problems. Anti-cavitation trims, low-noise cages, multi-stage pressure reduction, and proper Cv sizing reduce velocity-related damage. For critical applications, control valve sizing is performed using the ISA/IEC methodology with FL (liquid pressure recovery factor) and Fd (valve style modifier) for the specific valve geometry.
Need a Quote?
API 6D certified valves. Ships to 357+ cities worldwide. 24h response.
Request QuoteContact EngineerAll Categories
Technical Support
Have a Technical Question?
Our valve engineers can help specify the right valve for your application. Full project documentation available: MTCs, test reports, dimensional inspection, and third-party inspection coordination.