Fluid Flow and Pressure Drop

Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more

Absolute, Dynamic and Kinematic Viscosity

Dynamic, absolute and kinematic viscosities - convert between CentiStokes (cSt), centipoises (cP), Saybolt Universal Seconds (SSU) and degree Engler

Boiling Fluids - Max Suction Flow Velocity

Recommended max suction flow velocity when pumping boiling fluids

Boiling Liquids - Max Pumping Flow Velocity

Recommended max flow velocity on the delivery (pressure) side when pumping boiling liquids

Capacities of Sewer Pipes

Carrying capacity of sewer and wastewater pipes - gpm and liter per second

Comparing Friction Loss in Steel, Copper and Plastic Pipes

Water flow and friction head loss (ft/100 ft) in steel, copper and PVC plastic pipes

Comparing Secondary Coolants

Specific gravity, freezing points and viscosity for secondary coolants like calcium chloride, sodium chloride, ethylene glycol and propylene glycol

Copper Tubes - Fittings and Equivalent Lengths

Copper tube fittings and equivalent lengths - in feets of straight tube

Copper Tubes - Heat Carrying Capacity

Hot water heat carrying capacity for copper tubes type L

CTS and CPVC Tubes - Volume Flow and Friction Loss

Volume flow and pressure loss in CTS (Copper Tube Size) and CPVC (Chlorinated Poly Vinyl Chloride) tubes

Darcy-Weisbach Pressure and Head Loss Equation

The Darcy-Weisbach equation can be used to calculate pressure or head loss due to friction in ducts, pipes or tubes

Download ANSI, American National Standards Institute, Standards

ANSI is a private, not-for-profit, membership organization that acts not as a standards developer, but as a standards coordinating and approval body

Equation of Continuity

The Equation of Continuity is a statement of mass conservation

Equivalent Length Method - Calculating Minor Pressure Loss in Piping Systems

Pressure loss in piping systems by using the Equivalent Pipe Length Method

Flow Units Converter

Convert between volume flow units - gpm, liter/sec, cfm, m3/h - an online flow unit calculator

Hazen-Williams Equation - calculate Head Loss in Water Pipes

Friction head loss (ftH2O per 100 ft pipe) in water pipes can be estimated with the empirical Hazen-Williams equation

Hose Water Flow - Pressure Loss

Water flow and pressure loss due to friction in hoses

Hot Water Heating Systems - Steel Pipes Pressure Loss Chart

Steel pipes in hot water heating systems - pressure loss diagram

House Gas Pipe - Capacity

Carrying capacity of house gas pipes - in imperial and metric units

Hydraulic Diameter

Hydraulic diameter of pipes and ducts

Light Oil Pumping Flow Velocity

Max light oil flow velocity on pump delivery side

Light Oil Suction Flow Velocity

Recommended suction flow velocity when pumping light oils

Lined Pipes and Pressure Drop

Pressure drop diagrams for PTFE, PP, PFA and PVDF lined pipes

Liquids - Specific Gravities

Specific gravity of common liquids and fluids like alcohol, oils, benzene, water and many more

Liquids and Densities

Densities of common liquids like acetone, beer, oil, water and more

Low Pressure Gas Pipe Sizing

Apartments gas pipe service lines

LPG Pipes and Pressure Drop

Resistance and pressure loss in liquid LPG pipes

Major loss in Ducts, Tubes and Pipes

Major loss - head loss or pressure loss - due to friction in ducts, pipes and tubes

Mechanical Energy and Bernoulli Equation

The mechanical energy equation related to energy per unit mass, energy per unit volume and energy per unit weight involving head

Minor Loss Coefficients in Pipes and Tubes Components

Minor loss coefficients for common used components in pipe and tube systems

Minor Loss in Pipe or Duct Components

Minor loss, pressure or head loss in pipe, tube and duct system components

Natural Gas - Pipe Sizing

Sizing low pressure natural gas pipe lines - imperial units

Natural Gas - Pipe Sizing

Sizing pipes for natural gas - pressures above 5 psi (35 kPa)

Natural Gas - Pipe Sizing

Sizing low pressure natural gas pipe lines - Metric values

Oil Pipes - Recommended Flow Velocities

Flow velocities in oil pipes should be kept within certain limits

Oil Pipes and Pressure Drop

Pressure drop in oil pipes - viscosities ranging 100 - 600 Saybolt Universal Seconds

Online Fluid Flow Calculator

For laminar and turbulent flow

PE - PolyEthylene Pipes, Flow and Pressure Loss

Water flow in SDR pressure rated PE-pipes - pressure loss and velocities - Imperial and SI units

PE, PEH or PVC Pipes - Pressure Drop Diagram

Pressure drop (bar/100 m) and velocy in PE, PEH or PVC pipes

Pipes - Fluids and typical Velocities

Flow of liquids, gases and vapors - typical fluid velocities

Pipes and Fluid Flow Velocities

Calculate fluid flow and pipe velocities in pipes and tubes

Plastic Pipes - Friction Head Loss

Friction head loss (ft/100 ft) in plastic pipes - PVC, PP, PE, PEH

Pneumatic Piping - Pressure Loss

Pressure loss in pneumatic tubes - sizes ranging 5 - 36 mm

Pneumatic Powder and Solids - Transport Systems

Pneumatic transport systems are used to move powder and other solid products

Pneumatic Transport and Conveying - Carrying Velocities

Recommended air velocity for pneumatic transport of products like cement, coal, flour and more

Pneumatic Transporting

An introduction to pneumatic transport of powders

Pressfit Pipes - Pressure Loss Diagram

Pressure loss diagram for water flow in pressfit piping

Pressfit Piping - Friction Loss

Pressfit piping with water flow and friction loss

Pressure Gradient Diagrams

A pressure gradient diagram is a graphical presentation of the static pressure throughout a fluid flow system

Pressure Loss in Steel Pipes Schedule 40

Water flow and pressure loss in schedule 40 steel pipes - Imperial and SI units - gallons per minute, liters per second and cubic meters per hour

Pressure to Head - Unit Converter

Convert between pressure and head units - like lb/in2, atm, inches mercury, bars, Pa and more ..

Propane Gas - Pipe Sizing

Sizing low pressure propane gas pipe lines - Imperial units

Propane Gas - Pipe Sizing

Sizing low pressure propane gas pipe lines - Metric units

Propane Gas - Pipe Sizing

Sizing propane gas pipe lines - for pressures above 5 psig (35 kPa)

PVC - Friction Loss in Fittings and Equivalent Length

Minor loss in PVC and CPVC fittings as equivalent length of straight pipe

PVC Pipes - Friction Loss and Flow Velocities Schedule 40

Water flow in thermoplastic PVC and CPVC pipes Schedule 40 - friction loss (ft/100 ft, psi/100 ft) and flow velocities at dimensions ranging 1/2 to 16 inches

PVC Pipes - Friction Loss and Flow Velocities Schedule 80

Water flow in thermoplastic PVC and CPVC pipes Schedule 80 - friction loss (ft/100 ft, psi/100 ft) and flow velocities at dimensions ranging 1/2 to 16 inches

PVC Pipes Schedule 40 - Friction loss and Velocity Diagrams

Friction loss (psi/100 ft) and velocity for water flow in plastic PVC pipe schedule 40

Resistance and Fittings Equivalent Length in Hot Water Systems

Equivalent length of fittings like bends, returns, tees and valves in hot water heating systems - equivalent length in feet and meter

Reynolds Number

Introduction and definition of the dimensionless Reynolds Number - online calculators

Slurry Transport - Minimum Flow Velocity

Avoid settling of solids in slurry transport systems with flow velocities above certain levels

Standard Dimension Ratio - SDR

It is common to use the Standard Dimension Ratio - SDR - as method of rating pressure piping

Steel Pipes and Maximum Water Flow Capacity

Maximum water flow capacities in steel pipes - pipe dimensions ranging 2 - 24 inches

Steel Pipes Friction Loss with Viscous Liquids

Friction loss in schedule 40 steel pipe with viscous liquids - viscosities ranging from water to oil

Steel Pipes Schedule 40 - Friction loss and Velocity Diagram

Friction loss and velocity diagrams - in imperial (psi/100 ft, ft/s) and SI (Pa/100m, m/s) units

Steel Pipes Schedule 80 - Friction loss and Velocity Diagrams

Water flow in steel pipes schedule 80 - pressure drop and velocity diagrams in SI and Imperial units

Total Pressure or Head Loss in Pipe or Duct Systems

Major and minor loss in pipe, tubes and duct systems

Vacuum Pipe Lines - Pressure Drops

Vacuum pipes and pressure drops

Viscosity Converting Chart

Convert between the viscosity units Centiposes, milliPascal, CentiStokes and SSU

Viscous Fluids - Recommended Suction Flow Velocity

Recommended pump suction flow velocity for viscous fluids

Viscous Liquids - Friction Loss

Friction loss in steel pipes - for fluids with viscosities ranging 32 - 80000 SSU

Viscous Liquids - Recommended Delivery Flow Velocity

Flow velocities on delivery sides of pumps in viscous systems

Water - Absolute or Dynamic Viscosity

Absolute or dynamic viscosity of water in centipoises for temperatures between 32 - 200oF

Water - Delivery Flow Velocity

Required flow velocities in water transport systems - on the delivery side of the pump

Water - Suction Flow Velocity

Recommended water flow velocities on suction sides of pumps

Water Flow and Velocity Head in Steel Pipes - Schedule 40

Velocity head used to calculate minor pressure or head loss in fluid flow systems

Water Flow in Copper Tubes - Pressure Loss due to Fricton

Water flow and pressure loss (psi/ft) due to friction in copper tubes ASTM B88 Types K, L and M

Water Flow in Tubes - Reynolds Number

Clean cold waterflow in pipes and the Reynolds number

Williams Hazens Pressure Drop Equation

The Hazen-Williams equation can be used to calculate the pressure drop (psi) or friction loss in pipes or tubes

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