Wilo WILO-12939 Pump Performance Curve

The Wilo WILO-12939 pump curve page provides industrial hydraulic performance data for wastewater transfer, slurry pumping, dewatering operations, bypass pumping, and municipal lift station applications.

Engineering Specifications

Manufacturer	Wilo
Model Number	WILO-12939
Pump Type	Chopper Pump
Flow Range	321-2606 GPM
Total Dynamic Head	101-317 FT TDH
Peak Efficiency	94%
Motor Speed	3450 RPM
Voltage Options	460V
Motor Enclosure	ODP
Discharge Size	3" Discharge
Solids Handling Capacity	5" Solids
Impeller Style	Vortex Impeller
Bearing Frame Material	Ductile Iron
NPSHr	18.8 FT

Pump Curve Image

Download Engineering PDF

Download Wilo WILO-12939 Pump Curve PDF

Common Industrial Applications

• Municipal wastewater lift stations
• Industrial sump pump systems
• Mining slurry pumping
• Stormwater bypass systems
• Guide rail sewage systems
• Construction dewatering applications
• Corrosive process fluid handling
• Hazardous location pumping systems

Engineering FAQ

What does this pump curve illustrate?

The performance curve displays the hydraulic relationship between flow rate and total dynamic head for the Wilo WILO-12939.

Can this model handle solids?

Yes. The hydraulic design supports up to 5" solids depending on the impeller and operating conditions.

What impeller style is used?

This model uses a vortex impeller configuration for industrial and wastewater applications.

Can North Coast Process Equipment provide replacement recommendations?

Yes. NCPE can assist with crossover pump identification and equivalent replacement recommendations based on system requirements.