Propane Gas - Pipe Sizing

Sizing pipes with propane gas

Steel Pipe - Schedule 40

Capacity of Pipe (MBH, CFH, ft³/h)
Pipe Size (in)	Pipe Length (ft)
Pipe Size (in)	10	20	40	80	150	300
1/2	235	160	110	75	55	35
3/4	490	340	230	160	115	80
1	925	640	440	300	215	145
1 1/4	1900	1305	900	620	440	300
1 1/2	2850	1960	1345	925	660	450
2	5490	3770	1590	1780	1270	870
2 1/2	8740	6010	4130	2840	2020	1390
3	15455	10620	7300	5020	3570	2450
4	31525	21670	14890	10230	7280	5010
5	57030	39200	26940	18520	13180	9060
6	92350	63470	43620	29980	21340	14665
8	189750	130410	89630	61600	43840	30135

pressure less than 1 1/2 psig
fittings factor 1.5 - equivalent pipe length = pipe length + 50%
pressure drop 0.5 inches water column
energy content in propane gas 2520 Btu/cu ft
1 CFH = 1 MBH
steel pipes schedule 40

Copper Tubing - type K

Capacity of Pipe (MBH, CFH, ft³/h)
Nominal Pipe Size (O.D) (in)	Pipe Length (ft)
Nominal Pipe Size (O.D) (in)	10	20	40	80
1/4 (3/8)	35	25	15	12
3/8 (1/2)	75	50	35	25
1/2 (5/8)	150	105	70	50
5/8 (3/4)	265	180	125	85
3/4 (7/8)	380	260	180	120
1 (1 1/8)	805	555	380	260
1 1/4 (1 3/8)	1450	995	685	470

pressure less than 1 1/2 psig
fittings factor 1.5 - equivalent pipe length = pipe length + 50%
pressure drop 0.5 inches water column
energy content in propane gas 2500 Btu/cu ft
1 CFH = 1 MBH
copper tubing type K

Copper Tubing - type L

Capacity of Pipe (MBH, CFH, ft³/h)
Nominal Pipe Size (O.D) (in)	Pipe Length (ft)
Nominal Pipe Size (O.D) (in)	10	20	40	80
1/4 (3/8)	40	25	20	13
3/8 (1/2)	90	60	40	30
1/2 (5/8)	165	115	80	55
5/8 (3/4)	280	190	135	90
3/4 (7/8)	430	295	205	140
1 (1 1/8)	870	600	410	280
1 1/4 (1 3/8)	1510	1040	710	490

pressure less than 1 1/2 psig
fittings factor 1.5 - equivalent pipe length = pipe length + 50%
pressure drop 0.5 inches water column
energy content in propane gas 2500 Btu/cu ft
1 CFH = 1 MBH
copper tubing type L

1 Btu/h = 0.293 W
1 lb = 0.4536 kg
1 ft (foot) = 0.3048 m
1 in water = 248.8 N/m² (Pa) = 0.0361 lb/in² (psi) = 25.4 kg/m² = 0.0739 in mercury
1 psi (lb/in²) = 6,894.8 Pa (N/m²)

ToolBox ShortList

Difficult to find your favorite ToolBox page? Add a link to the page in your own personal Shortlist!

• Add this Page! • Delete the ShortList!

Translate this page to Spanish French German Italian Dutch Norwegian

The content in The Piping ToolBox is copyrighted but can be used with NO WARRANTY or LIABILITY. Important information should always be double checked with alternative sources. All applicable national and local regulations and practices concerning this aspects must be strictly followed and adhered to.

We appreciate any comments and tips on how to make The Piping ToolBox a better information source. Please contact us by email if You find any faults, inaccurate, or otherwise unacceptable information.

5 12 1