Hydraulic Ram Pump Calculator
Water a ram pump can lift — no electricity, just fall and water hammer.
A ram trades quantity for height: 30 L/min falling 2 m lifts ~3 L/min up 12 m, forever, free. The 'waste' water must drain away — it's the engine's exhaust, not a leak.
Formula
Hydraulic Ram Pump Calculator is a free ram pump for pump engineers, plumbers and plant designers — 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 Hydraulic Ram Pump Calculator
Water a ram pump can lift — no electricity, just fall and water hammer. The calculation implements q = Q·(fall/lift)·η (USDA/NRCS ram pump guides; Montgolfier (1796)). A ram trades quantity for height: 30 L/min falling 2 m lifts ~3 L/min up 12 m, forever, free. The 'waste' water must drain away — it's the engine's exhaust, not a leak.
How to use Hydraulic Ram Pump Calculator
- 1Enter Supply (drive) flow in L/min.
- 2Enter Supply fall height in m.
- 3Enter Delivery lift height in m.
- 4Enter Ram efficiency in % (Good commercial rams 60–75%).
- 5Read Delivered flow, Per day instantly — no submit button needed.
- 6Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Hydraulic Ram Pump Calculator?
- ✓Implements the standard formula — q = Q·(fall/lift)·η
- ✓Reference cited on-page: USDA/NRCS ram pump guides; Montgolfier (1796)
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Hydraulic Ram Pump Calculator use?+
It computes q = Q·(fall/lift)·η, per USDA/NRCS ram pump guides; Montgolfier (1796). 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 ram trades quantity for height: 30 L/min falling 2 m lifts ~3 L/min up 12 m, forever, free. The 'waste' water must drain away — it's the engine's exhaust, not a leak.
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 Hydraulic Ram Pump Calculator free to use?+
Yes — 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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