← Back to Main Page
Complete Pump Design Calculator
Professional wastewater pump sizing - from PE to final selection
1
PE & Flowrate
→
2
Head Calculation
→
3
Final Selection
⚡
Step 1: PE & Flowrate Determination
Flowrate Calculation
Input Method
Population Equivalent (PE)
Direct Flow Input
Population Equivalent (PE)
Number of people equivalent
Per Capita Flow
L/PE/day
Malaysia typical: 225 L/PE/day
Peak Factor
Auto-calculated from PE, or enter custom value
Display Units
Show All Units
m³/day only
MLD only
m³/hr only
m³/min only
L/s only
Calculated Flow Rates:
Flow Units
m³/day
MLD (Million Litres/Day)
m³/hr
m³/min
L/s
Average Flow (Q
ave
)
m³/day
Average daily flow rate
Peak Factor
Auto-calculated from flow, or enter custom value
Display Units
Show All Units
m³/day only
MLD only
m³/hr only
m³/min only
L/s only
Calculated Flow Rates:
Results will appear here
Continue to Head Calculation →
📐
Step 2: Head Calculation & System Analysis
Data from Previous Step:
Edit Values
System Parameters
Static Head (m)
Flow Rate
Unit
m³/hr
m³/day
m³/min
L/s
Pipe Diameter
50 mm
100 mm
150 mm
200 mm
250 mm
300 mm
400 mm
500 mm
600 mm
Custom
Pipe Length (m)
Custom Diameter (mm)
Pipe Material
PVC (C=150)
HDPE (C=140)
Ductile Iron - DI (C=130)
Galvanized Iron - GI (C=120)
Vitrified Clay - VCP (C=115)
Fittings & Power Settings
Common Fittings
90° Elbows
30D
45° Elbows
16D
Tee (through run)
20D
Tee (branch)
60D
Check Valves (swing)
50D
Gate Valves
8D
Butterfly Valves
45D
Globe Valves
340D
Ball Valves (full-port)
3D
Y/ Basket Strainers
200D
Reducers (avg)
10D
Pump Efficiency (%)
Safety Factor
Calculate Head & Power
Hazen-Williams Method
Click calculate to see results
Darcy-Weisbach Method
Click calculate to see results
Results Comparison
Calculations needed
← Back to Flowrate
Continue to Final Selection →
🎯
Step 3: Final Pump Selection Summary
Complete previous steps to see final recommendations
← Back to Head Calculation
Start New Design