01 / Practical selection
Three flow values are more useful than one
Give the minimum continuous flow, normal production flow and highest expected flow, with units. Identify whether those values are measured, calculated or estimated. Add the production hours and any frequent changes in rate.
A peak-flow duty and a low-flow duty can create different distribution and control questions. Include both when evaluating the equipment.
02 / Practical selection
Volume and throughput describe different things
Vessel volume does not directly state how much product can be processed at an agreed result. Distribution area, residence behaviour, gas load, foam margin and discharge performance also affect the operating range.
Compare proposals using the same product, temperature and acceptance objective. A capacity number without these conditions is not a complete equipment specification.
03 / Practical selection
Coordinate the unit with the rest of the line
Show whether upstream product supply is continuous or intermittent and what the next process requires. Explain buffers, recirculation, product changeovers and any downstream pressure changes.
Review how level and flow will be coordinated through startup and shutdown. The selected range should suit the installed line, including any planned future recipes or output changes.
Common questions
Capacity & flow questions
Can I request a quote without a final capacity?
Yes. Send your estimated range and identify what is still being decided. The configuration discussion can start with available data.
Is a larger vessel always better?
No. Distribution, control range and cleaning need to suit the duty. Compare the complete operating conditions, not vessel size alone.