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Propane Gas Piping - Capacity vs. Size

Sizing of propane gas pipe lines with pressures above 5 psig (35 kPa).

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The tables and diagrams below can be used to size propane gas pipe lines with pressures above 5 psig (35 kPa).

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Capacity of 100 ft Steel Pipe Schedule 40 (MBH)
Pressure (psig)		Pipe Dimension (in)
Upstream	Downstream	1/2	3/4	1	1 1/4	1 1/2	2	2 1/2	3	4	5
10	9.5	606	1265	2385	4896	7335	14126	22514	39800	81180	146870
10	9.0	875	1830	3550	7083	10612	20439	32576	57590	117460	212500
9	8.5	590	1239	2330	4785	7170	13810	22011	38910	79367	143590
9	8.1	810	1690	3190	6550	9810	18892	30112	53231	108575	196430
8	7.6	510	1070	2020	4150	6215	11969	19076	33723	68785	124440
8	7.2	741	1550	2925	6006	8999	17330	27622	48830	99598	180190
7	6.6	500	1046	1971	4050	6064	11678	18615	32904	67113	121420
7	6.3	675	1410	2658	5460	8178	15748	25100	44370	90500	163730
6	5.7	419	875	1647	3380	5064	9750	15550	27481	56053	101400
6	5.4	605	1268	2387	4998	7339	14140	22530	39826	81233	146960
5	4.7	407	850	1603	3290	4930	9490	15130	26748	54560	98710
5	4.5	536	1120	2110	4325	6481	12480	19890	35166	71730	129770

inlet upstream pressure is more than 35 kPa (5 psig)
one MBH is equivalent to 1000 BTU's per hour
fittings factor 1.2 - equivalent pipe length = pipe length + 20%
1 CFM ≈ 2.54 MBH
steel pipes schedule 40

Propane Gas Pipe Capacity Diagram - 10% Pressure Drop

Propane gas pipe sizing diagram - psi

download propane pipe sizing chart as pdf file

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