Duty path
Duty · Q — · —

Pump atmospheric head calculator

ISO 2533 Hatm for Kenya pad elevations. Feeds NPSHA — does not invent NPSHR.

Enquiry document

Specification request

Living sheet · rewritten from calculator

Enquiry · from this pad

Left pane stays with the tool · Duty is the join key across all six calculators.

Pad elevation

Site

m · Typing here sets Custom RL.
Hatm vs elevation Click the curve to set a custom RL. Pins are named Kenya sites.
Send to Proxico

Result · live

Live
— m

metres of water · ISO 2533

Sea-level Hatm
—
Already gone
—
Site
—
Elevation
—
Judgement

Hatm is not a site NPSHA measurement. HI 9.6.1 puts atmospheric head into NPSHA. ISO 9906 treats NPSHA as an installation number. NPSHR is a curve we do not invent.
Interconnect — Wire navigates the six tools; Split Desk keeps the enquiry visible while you size. Shared Duty object (proxico.duty.v1) carries Q, head/ΔP, T, medium, elevation.

Wire map Duty plumbing · 6 tools

Duty · —

Valve sizing

Q—
ΔP—
Cv—

Chem check

Medium—
Path—

Pump duty

Q—
H—
kW—

Atm head

z—
Hatm—

Diesel vs grid

EnergyKES/yr

Suction lift

DerateHatm
Click a node to open that tool · shared Duty in localStorage · M toggles map