Pump Shutoff Pressure Calculator
Maximum possible discharge pressure (dead-headed pump) for relief-valve and flange rating checks.
Design downstream piping, gaskets and instruments for THIS pressure, not the duty point โ every pump dead-heads eventually.
Formula
Pump Shutoff Pressure Calculator is a free shutoff head 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 Shutoff Pressure Calculator
Maximum possible discharge pressure (dead-headed pump) for relief-valve and flange rating checks. The calculation implements P_max = P_suction(max) + ฯยทgยทH_shutoff (API 610 / ASME B31.3 design-pressure practice). Design downstream piping, gaskets and instruments for THIS pressure, not the duty point โ every pump dead-heads eventually.
How to use Pump Shutoff Pressure Calculator
- 1Enter Shutoff head (from curve) in m (Typically 110โ125% of duty head).
- 2Enter Max suction pressure in kPa(g).
- 3Enter Liquid SG.
- 4Read Max discharge pressure instantly โ no submit button needed.
- 5Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Pump Shutoff Pressure Calculator?
- โImplements the standard formula โ P_max = P_suction(max) + ฯยทgยทH_shutoff
- โReference cited on-page: API 610 / ASME B31.3 design-pressure practice
- 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 Shutoff Pressure Calculator use?+
It computes P_max = P_suction(max) + ฯยทgยทH_shutoff, per API 610 / ASME B31.3 design-pressure practice. 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?+
Design downstream piping, gaskets and instruments for THIS pressure, not the duty point โ every pump dead-heads eventually.
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 Shutoff Pressure 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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