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www.hy-techroofdrains.com/water-flow-through-a-pipe

How much water can flow through a pipe (GPM/GPH)? We regularly get asked about the water flow capacity of different pipe sizes, and which is the best roof drain for a specific pipe size. Unfortunately, recommendations aren't that straightforward because you also need to account for water pressure, material friction and more.

www.calctool.org/CALC/eng/civil/hazen-williams_p

The Hazen-Williams formula is an empirical rule, that holds well for cold water running in pipes under turbulent flow conditions. This is very suitable for situations such as domestic piping and hosing, sprinkler and irrigation systems, etc. For gravitational flow, and for open-channel flow, other calcs are available.

sciencing.com/convert-pipe-size-gpm-5220428.html

How to Calculate GPM from PSI for Water. ... You can convert pipe size to gallons per minute of flow by calculating the cross-sectional area of the pipe and making some reasonable assumptions about pipe volume and the rate of flow. Pipe sizing is measured by the internal diameter of the pipe, not the overall outside diameter. Once determined ...

sciencing.com/convert-psi-gpm-water-8174602.html

This example will calculate the flow rate of water draining from a tank through a pipe with cross sectional area of 0.500 square feet. The pressure inside the tank is 94.0 psi and the pressure at the exit is atmospheric pressure, or 14.7 psi.

www.pipeflowcalculations.com/flowrate/calculator.xhtml

Fluid pressure at the start of the pipe for gas density calculation based on the ideal gas state equation R - gas constant Gas constant in terms of energy per unit of mass and temperature, for gas density calculation using ideal gas state equation Calculation setup Select value to calculate. You should enter not selected one. D pipe diameter V ...

www.hunker.com/13417095/how-to-calculate-gpm-from-psi

This equals 15.2 PSI over the 400 feet of pipe, or 3.8 PSI per 100 feet of pipe length. All long-run piping systems must be carefully calculated for pressure losses. Read the pressure-drop flow correlation about 2-inch Schedule 40 PVC plastic pipe from the tabular flow versus pipe-loss data chart.

www.easycalculation.com/physics/classical-physics/flow-rate-to-psi.php

Flow Rate to PSI Calculator. A classical physics calculator to convert flow rate of a liquid to PSI, the pressure. Flow rate, a term in fluid dynamics and hydrometry, is the volume of fluid which passes through a container (example: a pipe) per unit time and is measured as cubic metres per second and represented by the symbol Q.

www.hunker.com/13417414/how-to-calculate-air-flow-in-a-pipe

Calculate the pressure loss per 100 feet of pipe, since this is how published pipe flow data is presented. 135 psi minus 112-psi = 23-psi/350/100 = 6.57-psi drop per 100-feet. As 6.57 psi is less than 6.75 psi, this example lies in the "efficient" realm.

www.pressure-drop.com/Online-Calculator

Pressure Drop Online-Calculator Calculation of pressure drops of flowing liquids and gases in pipes and pipe elements (laminar and turbulent flow). Note: Calculations are possible only, if Javascript is activated in your browser. Pressure Drop Online-Calculator for small mobiles. This version is usable for browsers without Javascript also.

www.engineeringtoolbox.com/natural-gas-pipe-calculator-d_1042.html

The downstream pressure in a houseline after the meter/regulator is in general in the range of 7 to 11 inches Water Column, or about 1/4 psi. Example - Natural Gas Pipe Capacity. The capacity of a 100 ft natural gas pipe with a nominal diameter 0.5 inches (actual ID 0.622 in) and 0.5 inches WC pressure drop can be calculated as

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