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
Author: Joaquimma Anna
78 resources
Methods · worked examples · references
Why Your Pump Has Low Flow or Low Pressure: 12 Causes to Check
Low flow or low pressure in a pump system can cripple processes and waste energy. This article outlines the twelve most common reasons for…
Full Load Amps, Power Factor, and Electrical Sizing for Pump Motors
Full Load Amps (FLA) and power factor are the core electrical parameters that dictate how a pump motor is sized, protected, and installed. This…
Pump Motor Tripping the Breaker: Causes and What to Check First
When a pump motor repeatedly trips its circuit breaker, the problem can range from simple wiring errors to serious mechanical overloads. This article outlines…
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…
Chemical Metering Pumps: Dosing Calculations and Selection
A comprehensive reference on calculating dosing rates for chemical metering pumps, selecting the appropriate pump, and avoiding common pitfalls. Includes governing equations, US and…
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…
Pump Materials of Construction: Cast Iron, Stainless Steel, Bronze, and Thermoplastics
Choosing the right pump material of construction is critical for durability, efficiency, and safety. This reference examines cast iron, stainless steel, bronze, and thermoplastics,…
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…