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Determine the required CSST size of each section of the piping system shown in Figure A.6.2, with a designated pressure drop of 1 psi (6.9 kPa) for the 2 psi (13.8 kPa) section and 3-inch w.c. (0.75 kPa) pressure drop for the 13-inch w.c. (2.49 kPa) section.
Sizing natural gas pipes - pressures above 5 psi (35 kPa). The tables and diagrams below can be used to size natural gas pipes with pressures above 5 psi (35 kPa) . For full table - rotate the screen!
Use this gas orifice conversion chart for accurate orifice sizes when converting natural gas or propane appliances. Use our gas pipe sizing calculator to quickly find the right pipe size for your gas installation needs. Accurate, easy-to-use, and free!
The gas pressure delivered to residential buildings systems is 1/2 pounds per square inch (psi) or less. Since most gas appliances operate on 1/4 pounds pressure (psi) this is more than enough. In most cases high pressure (2 psi and up) is reserved for commercial and industrial applications.
Table A. Pipe Sizing Data Maximum deliver capacity of pipes of different diameters and lengths in cubic feet of gas per hour for an initial pressure of 2.0 PSI and a gas of .06 specific gravity.
NOTE: The sizing charts above list the specific pipe sizes required for the amount of BTU’s for a new gas line installations. If you are using an existing gas line you must take into consideration the existing gas line capacities to ensure you will have proper pressure.
The tables below can be used for natural gas pipe sizing. Steel Pipe - Schedule 40. Natural Gas - Pipe Sizing - Metric Values
The tables and diagrams below can be used to size natural gas pipes. Steel Pipe - Schedule 40. Natural Gas - Pipe Sizing - Imperial Values. Download Natural Gas Pipe Sizing Chart as pdf-file. pressure less than 10 kPa. fittings factor 1.5 - equivalent pipe length = pipe length + 50% pressure drop 125 Pa. energy content in natural gas 37 MJ/m3.
Table 5.4 Elevated Pressure Natural Gas (2 PSI with 1 PSI drop) Maximum Capacity of HOME-FLEX Underground® Poly Pipe in BTU/h (British Thermal Units per Hour) of Natural Gas by Length of Piping Run
Table B. Pipe sizing data. Maximum deliver capacity of pipes of different diameters and lengths in cubic feet of gas per hour for an initial pressure of 7 inch water column with a 0.5 inch water column pressure drop and a gas of 0.6 specific gravity. Total Equivalent Length of Pipe (feet)