K-Factors and Equivalent Length: Calculating Losses Through Valves and Fittings
K‑factors and equivalent length provide engineers with two practical ways to quantify the head loss introduced by valves, elbows, tees and other pipe fittings.…
PumpCalcs reference library
Category: Pump Hydraulics Fundamentals
Core concepts and equations that define pump hydraulic behavior.
17 resources
Methods · worked examples · references
Specific Speed and Suction Specific Speed: What They Tell You About a Pump
Specific speed and suction specific speed are dimensionless (or quasi‑dimensionless) indices that classify pump impeller geometry, predict performance curve shape, and quantify suction capability.…
Hydraulic Power vs Brake Horsepower vs Motor Power: The Difference Explained
Hydraulic power, brake horsepower, and motor power describe three distinct stages of energy transfer in a pump system. Understanding their definitions, relationships, and conversion…
Pump Affinity Laws: How Speed and Impeller Diameter Change Flow, Head, and Power
The pump affinity laws are fundamental scaling relationships that predict how centrifugal pump performance changes when rotational speed or impeller diameter is varied. Flow…
Best Efficiency Point (BEP): What It Is and Why Operating Away From It Destroys Pumps
The Best Efficiency Point (BEP) is the flow rate and head at which a centrifugal pump operates with maximum hydraulic efficiency. Sustained operation far…
Suction Lift vs Flooded Suction: Designing the Suction Side Correctly
Understanding the difference between suction lift and flooded suction is essential for reliable pump operation. This guide explains the governing NPSHA equation, design methodology,…
How a Centrifugal Pump Works: Components and Operating Principle
A centrifugal pump converts mechanical energy from a driver into fluid kinetic energy using a rotating impeller. Understanding its components, the Euler pump equation,…