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consult with a local gas professional to determine accurate btu availability. Use this chart as a guideline ONLY and does NOT account for variations in the type of pipe (plastic or iron.)
While the appliances are rated in Btu, the gas code tables list the size of piping in cubic feet per hour (cfh). So you’ll have to convert each Btu input rating to cubic feet of gas before sizing the distribution piping. You can assume that each cubic foot of natural gas releases 1,000 Btu per hour.
Calculate capacities and dimensions of natural gas pipe lines. The capacity of a low pressure natural gas (less than 1 psi, 6.9 kPa ) pipe line with a small pressure loss can be calculated with the Spitzglass formula
Sizing low pressure natural gas pipe lines - Imperial units. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! The tables below can be used for natural gas pipe sizing.
19 kwi 2024 · Once the equivalent length is determined, use gas pipe sizing charts provided by relevant codes or standards, such as the International Fuel Gas Code (IFGC) or the National Fuel Gas Code (NFPA 54), to determine sizing.
The line sizes given on the specification sheets are based on a 5 pound pressure drop for the entire piping run, from 50' to 250'. Example: A 25,000 BTUH load will require a 3/8" line for 100 equivalent feet (Point A). At 150 equivalent feet, a 1/2" line would be required for the same load (Point B). Liquid Line Sizing. MI - 2. 25-Apr-06.
Whether you're dealing with minimum pipe diameters or larger size pipe diameters, our calculator can help you achieve optimal results. By supporting metric pipe sizes, the calculator takes into account all variables, such as increased output and low loss fittings.
