The low pressure pipe sizing tables for propane are: B.1 and B.6. The low pressure pipe sizing tables for natural gas are: A.1, A.2, A.8 and A.9. Low pressure systems are systems in which the pressures do not exceed 0.5 Psig (14″ w.c.). Therefore the sizing procedure for these pressure ranges is very similar and they have been grouped together in this learning task. For all low pressure and 2 psig tables a 20% allowance has been included in the table length. Pipes' Relative Capacity Relative capacity between larger and smaller pipes.Sizing Gas Low Pressure and 2 psi Piping SystemsĪs was previously noted some of the capacity tables will include in their description “including fittings” and others will not.Orifices - Natural Gas Capacity Capacity of natural gas orifices.Capacity Sizing low pressure natural gas pipe lines - Metric units. Natural Gas Piping - Sizing of Low Pressure Pipes vs.Size Sizing low pressure natural gas pipe lines - Imperial units. Natural Gas Pipes - Low Pressure Capacities vs.of Outlets Natural gas consumption in laboratory outlets. Natural Gas Laboratory Consumption vs.of Apartments Multiple apartments and natural gas demand. Natural Gas - Meter Capacities Types of natural gas meters and their capacities.Dimensions Carrying capacity of house gas pipes - in imperial and metric units. Gas Pipes - Low Pressure Sizing Sizing gas pipes for apartment service lines.Gas Pipes - Approved Materials Materials approved for gas pipes.

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Natural Gas Pipe Calculator - Metric Units Natural Gas Pipe Calculator - Imperial Units Specific gravity of natural gas is set to 0.60. 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 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. Typical values are in the range 0.6 - 0.7. The specific gravity of natural gas varies from 0.55 to 1.0. 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 formulaįor natural gas the nominal BTU/cf varies from about 900 to 1100 BTU/cf.

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