Pypley: Pump & Pipe Calculator

15

Trusted by Engineers

Expert Solutions

Size and check pumped pipe systems on your iPhone. Describe the fluid, pipes, pump and suction side, tap Calculate, and Pypley finds where the pump will run, shows where every psi goes and checks for cavitation.

Free to download, with one full project and every feature included. A one-time purchase unlocks unlimited projects. No subscription, no ads.

WHERE WILL THE PUMP RUN?

• Operating point on the pump and system curves, with efficiency and shaft power

• Speed changes and impeller trims with the affinity laws

• Viscous fluid correction to ANSI/HI 9.6.7

• A duty finder that ranks library pumps by efficiency at your flow and head

WILL IT CAVITATE?

• NPSH available against NPSH required, with ANSI/HI 9.6.1 margins for your service: general, building services, water, chemical, hydrocarbon, cooling water or boiler feed

• Atmospheric pressure corrected for your site's altitude

• Every suction loss itemized, so you can see what is using up your margin

WHERE DOES THE PRESSURE GO?

• Every pipe, fitting and valve itemized, with its share of the pump head

• Friction from Colebrook–White, with roughness for 69 pipe materials

• Notes that flag negative pressure, velocities outside guidance, pumps running outside their preferred range and check valves that aren't fully open, each with a suggested fix

PUMP CURVES FROM A PHOTO OR PDF

• Calibrate the axes, then tap along the head, efficiency and NPSHr curves

• Polynomial fit, with CSV export

• Or choose a generic 50 Hz or 60 Hz pump from the library, import a CSV or enter the curve by hand

CLOSED LOOPS, CHILLERS AND HEAT EXCHANGERS

• Open tanks, pressurized tanks and closed loops

• Expansion vessel sizing to EN 12828, with pre-charge and safety valve checks

• Local pressure at every point around the loop

• 14 types of rated equipment, including chillers with the AHRI 550/590 test tolerance, entered from the datasheet and corrected to your fluid

• Plate, shell-and-tube, coil and double-pipe heat exchangers estimated from their geometry

LIBRARIES

• 413 fluids, from water and glycols to oils, fuels and acids, with density, viscosity and vapor pressure across temperature

• Pipe sizes from 16 standards, including ASME B36.10M, ASTM, AWWA, EN and ISO

• 20 check valve types, orifices, strainers, filters and packed beds

• A Kv and Cv library of fittings and valves up to NPS 48, including HVAC balancing and triple-duty valves

• Save your own pumps and fittings to reuse in any project

REPORTS

• Share a PDF report with the system diagram, curves, losses and notes

• Export the results to CSV

BUILT FOR ENGINEERS

• US customary or metric units, switchable at any time

• Everything is calculated on your iPhone, so it works offline

• Projects sync across your devices with iCloud

• Model Check shows what's missing before you calculate

• A step-by-step guide, searchable help and a glossary

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