Pump Priming Volume Calculator
Water needed to prime a suction line and pump casing before first start.
A centrifugal pump full of air develops ~1/800th of its water head โ it will never self-evacuate a dry suction line. Foot valve + this many litres = reliable starts.
Formula
Pump Priming Volume Calculator is a free pump priming for pump engineers, plumbers and plant designers โ instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Pump Priming Volume Calculator
Water needed to prime a suction line and pump casing before first start. The calculation implements V = A_pipeยทL_suction + V_casing (Karassik, Pump Handbook โ priming systems). A centrifugal pump full of air develops ~1/800th of its water head โ it will never self-evacuate a dry suction line. Foot valve + this many litres = reliable starts.
How to use Pump Priming Volume Calculator
- 1Enter Suction line diameter in mm.
- 2Enter Suction line length in m.
- 3Enter Pump casing volume in L.
- 4Read Priming water needed instantly โ no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Pump Priming Volume Calculator?
- โImplements the standard formula โ V = A_pipeยทL_suction + V_casing
- โReference cited on-page: Karassik, Pump Handbook โ priming systems
- โOne-click SI โ Imperial toggle โ values convert in place, physics stays in SI
- โLive worked example: the substitution recomputes from your numbers
- โRuns entirely in your browser โ nothing uploaded, free forever
Frequently asked questions
What formula does the Pump Priming Volume Calculator use?+
It computes V = A_pipeยทL_suction + V_casing, per Karassik, Pump Handbook โ priming systems. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
A centrifugal pump full of air develops ~1/800th of its water head โ it will never self-evacuate a dry suction line. Foot valve + this many litres = reliable starts.
Can I use this for pump selection?+
Use it to establish the duty (flow, head, NPSH, power) and then pick a pump whose curve passes through that point near best efficiency. The tool gives you the engineering numbers a supplier will ask for.
Is the Pump Priming Volume Calculator free to use?+
Yes โ completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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