References & further reading
- IEC 60534 / ISA sizing practices for control valves — conceptual background.
- Vendor-specific Kv/Cv bulletins for final trim and noise predictions.
Model assumptions
- Incompressible fluid with constant SG; not for flashing, choked gas, or multiphase mixtures.
- ΔP must be positive and Q in SI base as wired in the schema; adjust carefully when copying field data.
- Pipe reducers upstream/downstream of the valve are not auto-modeled.
Shareable URL
When the toolbar exposes “Copy shareable link”, inputs can be encoded in the URL so colleagues can reopen the same case. All computations run locally in your browser; this tool may not expose share links yet.
Frequently asked questions
- Why is Kv dimensionless here but vendors cite m³/h?
- Display units follow the grid; underlying SI base is consistent with the formula note in Tools.Calculators.
Extended copy on this page (headings, references, assumptions, FAQs) may be drafted or localized with AI assistance; engineering judgment and governing codes still apply. Numerical models run locally in your browser as implemented. For contract-critical work, cite primary standards and qualified review.