Hazen-Williams C Values for Common Pipe Materials
The Hazen‑Williams C coefficient quantifies the internal roughness of pipe materials and directly influences friction‑loss calculations in water distribution systems. This article compiles typical…
PumpCalcs reference library
Author: John C. Wilcox
87 resources
Methods · worked examples · references
Understanding the K-Factor Table for Valves and Fittings
The K‑Factor table quantifies pressure loss through valves and fittings, enabling accurate pipe‑system design and pump selection. This article explains the governing equations, derivations,…
Water Properties Table: Density, Vapor Pressure, and Viscosity by Temperature – A Technical Reference
A detailed reference on how water density, vapor pressure, and viscosity vary with temperature. Includes derivations, US‑SI examples, typical tables, and practical guidance for…
Pipe Roughness Values for Common Piping Materials – A Technical Reference
Understanding pipe roughness is essential for accurate head‑loss calculations in pump and piping design. This reference compiles standard roughness values, explains the governing equations,…
Specific Gravity and Viscosity of Common Industrial Fluids – A Technical Reference
Understanding specific gravity and viscosity is essential for accurate pump selection, system design, and troubleshooting. This article compiles typical values for common industrial fluids,…
API 610 vs ANSI/ASME B73.1: Pump Standards Compared
A detailed comparison of API 610 and ANSI/ASME B73.1 reveals how each standard governs centrifugal pump design, testing, and documentation. Understanding their scope, pressure…
Atmospheric Pressure by Altitude and How It Limits Suction Lift
Atmospheric pressure drops with altitude, directly reducing the maximum suction lift a pump can achieve. This article explains the physics, provides the governing formula,…
Pump Unit Conversions: Flow, Head, Pressure, and Power – A Comprehensive Reference
Understanding how to translate flow, head, pressure, and power between US customary and SI units is essential for accurate pump selection, performance analysis, and…
Steel Pipe Schedule Chart: Nominal Sizes, Wall Thickness, and Inside Diameters
A steel pipe schedule chart translates nominal pipe size into actual dimensions—outside diameter, wall thickness, and inside diameter. Understanding these relationships is essential for…
Hydraulic Institute (HI) Standards: What Pump Engineers Need to Know
Hydraulic Institute (HI) standards define the testing, rating, and performance criteria for pumps worldwide. This reference explains the key provisions, how they are derived,…