Pump Engineering Calculator

Head · NPSH · Pipe friction · Pump selection

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🅿️Pump Head & Available NPSH (Centrifugal Pump)

Based on HG/T 20570. Friction factor by Colebrook equation.

kg/m³
cP
MPa(abs)
m³/h
m³/h
m
m
m
MPa(g)
MPa(g)
m
m
m
m
mm

ζζ
kPa
m
m
mm

ζζ
kPa
%

🌀Pipe Friction & Pump Selection

Darcy–Weisbach segmented friction, local loss, static head, total head with margin.

kg/m³
mPa·s
m³/h
m
m
%
%

📏Pipe Diameter / Velocity

Suction 1.5–2.0 m/s, discharge 2.0–3.0 m/s, bell-mouth 1.0–1.5 m/s.

m³/h
m/s
mm

⚡Motor Power

m³/h
m
kg/m³
%

🏗️Pumping Station Hydraulics (Manning)

m³/h
mm
m
m
%

kg/m³
%

🏭Sewage Pump Station Design

L/d·person
person
no.
min
m
m
m
m
m

🌀

m³/h
m
m
r/min
mm
stages
%
kg/m³

📐

m³/h
m
stages
r/min
m
mm
mm
mm

🔁

m³/h
m
kW
%
m
r/min
r/min
mm
mm

🧪

kg/m³
cP
m³/h
mm
m
mm

ζζ

⚙️

m³/h
m
%
kg/m³

⛲

m³/h
mm
m
m
no.
m
%

🔀

📈

m³/h
m
m
m
m

🌡

m³/h
mm
kg/m³
mPa·s
mm
m
m
%