CODES

ADOPTS WITH AMENDMENTS:

International Fuel Gas Code 2012 (IFGC 2012)

Chapter 1 Administration

Chapter 2 Definitions

Chapter 3 General Regulations

Chapter 4 Gas Piping Installations

Chapter 5 Chimneys and Vents

Chapter 6 Specific Appliances

Chapter 7 Gaseous Hydrogen Systems

IFGC-IFGS Chapter 8 Referenced Standards

Appendix A (Ifgs) Sizing and Capacities of Gas Piping

Appendix B (Ifgs) Sizing of Venting Systems Serving Appliances Equipped With Draft Hoods, Category I Appliances and Appliances Listed for Use With Type B Vents

Appendix C (Ifgs) Exit Terminals of Mechanical Draft and Direct-Vent Venting Systems

Appendix D (Ifgs) Recommended Procedure for Safety Inspection of an Existing Appliance Installation

This chapter shall govern the design, installation, modification and maintenance of piping systems. The applicability of this code to piping systems extends from the point of delivery to the connections with the appliances and includes the design, materials, components, fabrication, assembly, installation, testing, inspection, operation and maintenance of such piping systems.
Utility service piping located within buildings shall be installed in accordance with the structural safety and fire protection provisions of the International Building Code.
The storage system for liquefied petroleum gas shall be designed and installed in accordance with the International Fire Code and NFPA 58.
In modifying or adding to existing piping systems, sizes shall be maintained in accordance with this chapter.
Where an additional appliance is to be served, the existing piping shall be checked to determine if it has adequate capacity for all appliances served. If inadequate, the existing system shall be enlarged as required or separate piping of adequate capacity shall be provided.
For other than steel pipe, exposed piping shall be identified by a yellow label marked “Gas” in black letters. The marking shall be spaced at intervals not exceeding 5 feet (1524 mm). The marking shall not be required on pipe located in the same room as the appliance served.
Where two or more meters are installed on the same premises but supply separate consumers, the piping systems shall not be interconnected on the outlet side of the meters.
Piping from multiple meter installations shall be marked with an approved permanent identification by the installer so that the piping system supplied by each meter is readily identifiable.
All pipe utilized for the installation, extension and alteration of any piping system shall be sized to supply the full number of outlets for the intended purpose and shall be sized in accordance with Section 402.
Each length of pipe and tubing and each pipe fitting, utilized in a fuel gas system, shall bear the identification of the manufacturer.

All piping, tubing and fittings shall comply with the applicable referenced standards, specifications and performance criteria of this code and shall be identified in accordance with Section 401.9. Piping, tubing and fittings shall either be tested by an approved third-party testing agency or certified by an approved third-party certification agency.

Piping systems shall be of such size and so installed as to provide a supply of gas sufficient to meet the maximum demand and supply gas to each appliance inlet at not less than the minimum supply pressure required by the appliance.

The volumetric flow rate of gas to be provided, in cubic feet per hour, shall be calculated using the manufacturer’s input ratings of the appliances served adjusted for altitude. Where an input rating is not indicated, the gas supplier, appliance manufacturer or a qualified agency shall be contacted, or the rating from Table 402.2 shall be used for estimating the volumetric flow rate of gas to be supplied.

The total connected hourly load shall be used as the basis for pipe sizing, assuming that all appliances could be operating at full capacity simultaneously. Where a diversity of load can be established, pipe sizing shall be permitted to be based on such loads.

TABLE 402.2

APPROXIMATE GAS INPUT FOR TYPICAL APPLIANCES

APPLIANCEINPUT BTU/H
(Approx.)
Space Heating Units
Hydronic boiler
Single family100,000
Multifamily, per unit60,000
Warm-air furnace
Single family100,000
Multifamily, per unit60,000
Space and Water Heating Units
Hydronic boiler
Single family120,000
Multifamily, per unit75,000
Water Heating Appliances
Water heater, automatic instantaneous
Capacity at 2 gal./minute142,800
Capacity at 4 gal./minute285,000
Capacity at 6 gal./minute428,400
Water heater, automatic storage, 30- to 40-gal. tank35,000
Water heater, automatic storage, 50-gal. tank50,000
Water heater, domestic, circulating or side-arm35,000
Cooking Appliances
Built-in oven or broiler unit, domestic25,000
Built-in top unit, domestic40,000
Range, free-standing, domestic65,000
Other Appliances
Barbecue40,000
Clothes dryer, Type 1 (domestic)35,000
Gas fireplace, direct-vent40,000
Gas light2,500
Gas log80,000
Refrigerator3,000

For SI: 1 British thermal unit per hour = 0.293 W, 1 gallon = 3.785 L, 1 gallon per minute = 3.785 L/m.

Gas piping shall be sized in accordance with one of the following:

  1. Pipe sizing tables or sizing equations in accordance with Section 402.4.
  2. The sizing tables included in a listed piping system’s manufacturer’s installation instructions.
  3. Other approved engineering methods.

Where Tables 402.4(1) through 402.4(37) are used to size piping or tubing, the pipe length shall be determined in accordance with Section 402.4.1, 402.4.2 or 402.4.3.

Where Equations 4-1 and 4-2 are used to size piping or tubing, the pipe or tubing shall have smooth inside walls and the pipe length shall be determined in accordance with Section 402.4.1, 402.4.2 or 402.4.3.

  1. Low-pressure gas equation [Less than 11/2 pounds per square inch (psi) (10.3 kPa)]:
  2. (Equation 4-1)

  3. High-pressure gas equation [11/2 psi (10.3 kPa) and above]:
  4. (Equation 4-2)

    where:

    D=Inside diameter of pipe, inches (mm).
    Q=Input rate appliance(s), cubic feet per hour at 60°F (16°C) and 30-inch mercury column.
    P1=Upstream pressure, psia (P1 + 14.7).
    P2=Downstream pressure, psia (P2 + 14.7).
    L=Equivalent length of pipe, feet.
    ΔH=Pressure drop, inch water column (27.7 inch water column = 1 psi).

TABLE 402.4

Cr AND Y VALUES FOR NATURAL GAS AND UNDILUTED PROPANE AT STANDARD CONDITIONS

GASEQUATION FACTORS
CrY
Natural gas0.60940.9992
Undiluted propane1.24620.9910

For SI: 1 cubic foot = 0.028 m3, 1 foot = 305 mm, 1-inch water column = 0.2488 kPa, 1 pound per square inch = 6.895 kPa, 1 British thermal unit per hour = 0.293 W.

TABLE 402.4(1)

SCHEDULE 40 METALLIC PIPE

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop0.3 in. w.c.
Specific Gravity0.60
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/2345681012
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.0265.0476.0657.98110.02011.938
Length (ft)Capacity in Cubic Feet of Gas Per Hour
101312735141,0601,5803,0504,8608,58017,50031,70051,300105,000191,000303,000
20901883537261,0902,0903,3405,90012,00021,80035,30072,400132,000208,000
30721512845838731,6802,6804,7409,66017,50028,30058,200106,000167,000
40621292434997471,4402,2904,0508,27015,00024,20049,80090,400143,000
50551142154426621,2802,0303,5907,33013,30021,50044,10080,100127,000
60501041954006001,1601,8403,2606,64012,00019,50040,00072,600115,000
7046951793685521,0601,6903,0006,11011,10017,90036,80066,800106,000
8042891673435149891,5802,7905,68010,30016,70034,20062,10098,400
9040831573224829281,4802,6105,3309,65015,60032,10058,30092,300
10038791483044558771,4002,4705,0409,11014,80030,30055,10087,200
12533701312694037771,2402,1904,4608,08013,10026,90048,80077,300
15030631192443667041,1201,9804,0507,32011,90024,30044,20070,000
17528581092243366481,0301,8203,7206,73010,90022,40040,70064,400
20026541022093136029601,7003,4606,26010,10020,80037,90059,900
2502348901852775348511,5003,0705,5508,99018,50033,50053,100
3002143821682514847711,3602,7805,0308,15016,70030,40048,100
3501940751542314457091,2502,5604,6307,49015,40028,00044,300
4001837701432154146601,1702,3804,3106,97014,30026,00041,200
4501735661352023896191,0902,2304,0406,54013,40024,40038,600
5001633621271913675851,0302,1103,8206,18012,70023,10036,500
5501531591211813495569822,0003,6205,87012,10021,90034,700
6001430561151733335309371,9103,4605,60011,50020,90033,100
6501429541101653185088971,8303,3105,36011,00020,00031,700
7001327521061593064888621,7603,1805,15010,60019,20030,400
7501326501021532954708301,6903,0604,96010,20018,50029,300
800122648991482854548021,6402,9604,7909,84017,90028,300
850122546951432754397761,5802,8604,6409,53017,30027,400
900112445931392674267521,5302,7804,5009,24016,80026,600
950112344901352594137311,4902,7004,3708,97016,30025,800
1,000112343871312524027111,4502,6204,2508,72015,80025,100
1,100102140831242403826751,3802,4904,0308,29015,10023,800
1,200NA2039791192293646441,3102,3803,8507,91014,40022,700
1,300NA2037761142193496171,2602,2803,6807,57013,70021,800
1,400NA1935731092103355921,2102,1903,5407,27013,20020,900
1,500NA1834701052033235711,1602,1103,4107,01012,70020,100
1,600NA1833681021963125511,1202,0303,2906,77012,30019,500
1,700NA173266981893025331,0901,9703,1906,55011,90018,800
1,800NA163164951842935171,0501,9103,0906,35011,50018,300
1,900NA163062931782845021,0201,8503,0006,17011,20017,700
2,000NA162960901732764881,0001,8002,9206,00010,90017,200

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. NA means a flow of less than 10 cfh.
  2. All table entries have been rounded to three significant digits.

TABLE 402.4(2)

SCHEDULE 40 METALLIC PIPE

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop0.5 in. w.c.
Specific Gravity0.60
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/2345681012
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.0265.0476.0657.98110.02011.938
Length (ft)Capacity in Cubic Feet of Gas Per Hour
101723606781,3902,0904,0206,40011,30023,10041,80067,600139,000252,000399,000
201182474669571,4302,7604,4007,78015,90028,70046,50095,500173,000275,000
30951993747681,1502,2203,5306,25012,70023,00037,30076,700139,000220,000
40811703206579851,9003,0205,35010,90019,70031,90065,600119,000189,000
50721512845838731,6802,6804,7409,66017,50028,30058,200106,000167,000
60651372575287911,5202,4304,2908,76015,80025,60052,70095,700152,000
70601262374867281,4002,2303,9508,05014,60023,60048,50088,100139,000
80561172204526771,3002,0803,6707,49013,60022,00045,10081,900130,000
90521102074246351,2201,9503,4507,03012,70020,60042,30076,900122,000
100501041954006001,1601,8403,2606,64012,00019,50040,00072,600115,000
12544921733555321,0201,6302,8905,89010,60017,20035,40064,300102,000
15040831573224829281,4802,6105,3309,65015,60032,10058,30092,300
17537771442964438541,3602,4104,9108,88014,40029,50053,60084,900
20034711342754127941,2702,2404,5608,26013,40027,50049,90079,000
25030631192443667041,1201,9804,0507,32011,90024,30044,20070,000
30027571082213316381,0201,8003,6706,63010,70022,10040,10063,400
3502553992033055879351,6503,3706,1009,88020,30036,90058,400
4002349921892835468701,5403,1405,6809,19018,90034,30054,300
4502246861772665128161,4402,9405,3308,62017,70032,20050,900
5002143821682514847711,3602,7805,0308,15016,70030,40048,100
5502041781592394597321,2902,6404,7807,74015,90028,90045,700
6001939741522284386991,2402,5204,5607,38015,20027,50043,600
6501838711452184206691,1802,4104,3607,07014,50026,40041,800
7001736681402094036431,1402,3204,1906,79014,00025,30040,100
7501735661352023896191,0902,2304,0406,54013,40024,40038,600
8001634631301953755981,0602,1603,9006,32013,00023,60037,300
8501633611261893635791,0202,0903,7806,11012,60022,80036,100
9001532591221833525619922,0203,6605,93012,20022,10035,000
9501531581181783425459631,9603,5505,76011,80021,50034,000
1,0001430561151733335309371,9103,4605,60011,50020,90033,100
1,1001428531091643165038901,8103,2805,32010,90019,80031,400
1,2001327511041563014808491,7303,1305,07010,40018,90030,000
1,3001226491001502894608131,6603,0004,8609,98018,10028,700
1,400122547961442774427811,5902,8804,6709,59017,40027,600
1,500112445931392674267521,5302,7804,5009,24016,80026,600
1,600112344891342584117271,4802,6804,3408,92016,20025,600
1,700112242861302503987031,4302,5904,2008,63015,70024,800
1,800102241841262423866821,3902,5204,0708,37015,20024,100
1,900102140811222353756621,3502,4403,9608,13014,80023,400
2,000NA2039791192293646441,3102,3803,8507,91014,40022,700

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. NA means a flow of less than 10 cfh.
  2. All table entries have been rounded to three significant digits.

TABLE 402.4(3)

SCHEDULE 40 METALLIC PIPE

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop3.0 in. w.c.
Specific Gravity0.60
INTENDED USE: Initial supply pressure of 8.0 inches w.c. or greater
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Cubic Feet of Gas Per Hour
104549491,7873,6695,49710,58816,87529,83243,678
203126521,2282,5223,7787,27711,59820,50330,020
302505249862,0253,0345,8449,31416,46524,107
402144488441,7332,5975,0017,97114,09220,632
501903977481,5362,3024,4337,06512,48918,286
601723606781,3922,0854,0166,40111,31616,569
701583316241,2801,9193,6955,88910,41115,243
801473085801,1911,7853,4375,4799,68514,181
901382895441,1181,6753,2255,1409,08713,305
1001312735141,0561,5823,0464,8568,58412,568
1251162424569361,4022,7004,3037,60811,139
1501052194138481,2702,4463,8996,89310,092
175962023807801,1692,2513,5876,3429,285
200901883537261,0872,0943,3375,9008,638
250801663136439641,8562,9585,2297,656
300721512845838731,6812,6804,7386,937
350661392615368031,5472,4564,3596,382
400621292434997471,4392,2944,0555,937
450581212284687011,3502,1523,8045,570
500551142154426621,2752,0333,5945,262
550521092044206291,2111,9313,4134,997
600501041954006001,1561,8423,2564,767
65047991873845751,1071,7643,1184,565
70046951793685521,0631,6952,9964,386
75044921733555321,0241,6322,8864,225
80042891673435149891,5762,7874,080
85041861623324979571,5262,6973,949
90040831573224829281,4792,6153,828
95039811523124689011,4362,5393,718
1,00038791483044558771,3972,4703,616
1,10036751412894328331,3272,3463,435
1,20034711342754127941,2662,2383,277
1,30033681282643957611,2122,1433,138
1,40031651232533797311,1652,0593,014
1,50030631192443667041,1221,9832,904
1,60029611152363536801,0831,9152,804
1,70028591112283426581,0481,8542,714
1,80027571082213316381,0171,7972,631
1,90027561052153226199871,7452,555
2,00026541022093136029601,6982,485

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

TABLE 402.4(4)

SCHEDULE 40 METALLIC PIPE

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop6.0 in. w.c.
Specific Gravity0.60
INTENDED USE: Initial supply pressure of 11.0 inches w.c. or greater
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Cubic Feet of Gas Per Hour
106601,3802,6005,3387,99915,40524,55343,40563,551
204549491,7873,6695,49710,58816,87529,83243,678
303647621,4352,9464,4158,50213,55123,95635,075
403126521,2282,5223,7787,27711,59820,50330,020
502765781,0892,2353,3496,44910,27918,17226,606
602505249862,0253,0345,8449,31416,46524,107
702304829071,8632,7915,3768,56815,14722,178
802144488441,7332,5975,0017,97114,09220,632
902014207921,6262,4374,6937,47913,22219,359
1001903977481,5362,3024,4337,06512,48918,286
1251683526631,3612,0403,9286,26111,06916,207
1501533196011,2341,8483,5595,67310,02914,684
1751402935531,1351,7003,2755,2199,22713,509
2001312735141,0561,5823,0464,8568,58412,568
2501162424569361,4022,7004,3037,60811,139
3001052194138481,2702,4463,8996,89310,093
350962023807801,1692,2513,5876,3429,285
400901883537261,0872,0943,3375,9008,638
450841763326811,0201,9653,1315,5358,105
500801663136439641,8562,9585,2297,656
550761582976119151,7622,8094,9667,271
600721512845838731,6812,6804,7386,937
650691442725588361,6102,5664,5376,643
700661392615368031,5472,4654,3596,382
750641342525167741,4902,3754,1996,148
800621292434997471,4392,2944,0555,937
850601252354837231,3932,2203,9245,745
900581212284687011,3502,1523,8045,570
950561182214546811,3112,0903,6955,410
1,000551142154426621,2752,0333,5945,262
1,100521092044206291,2111,9313,4134,997
1,200501041954006001,1561,8423,2564,767
1,30047991873845751,1071,7643,1184,565
1,40046951793685521,0631,6952,9964,386
1,50044921733555321,0241,6322,8864,225
1,60042891673435149891,5762,7874,080
1,70041861623324979571,5262,6973,949
1,80040831573224829281,4792,6153,828
1,90039811523124689011,4362,5393,718
2,00038791483044558771,3972,4703,616

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

TABLE 402.4(5)

SCHEDULE 40 METALLIC PIPE

GasNatural
Inlet Pressure2.0 psi
Pressure Drop1.0 psi
Specific Gravity0.60
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Cubic Feet of Gas Per Hour
101,5103,0405,56011,40017,10032,90052,50092,800189,000
201,0702,1503,9308,07012,10023,30037,10065,600134,000
308691,7603,2106,5909,88019,00030,30053,600109,000
407531,5202,7805,7108,55016,50026,30046,40094,700
506731,3602,4905,1107,65014,70023,50041,50084,700
606151,2402,2704,6606,98013,50021,40037,90077,300
705691,1502,1004,3206,47012,50019,90035,10071,600
805321,0801,9704,0406,05011,70018,60032,80067,000
905021,0101,8503,8105,70011,00017,50030,90063,100
1004629341,7103,5105,26010,10016,10028,50058,200
1254148361,5303,1404,7009,06014,40025,50052,100
1503727511,3702,8204,2208,13013,00022,90046,700
1753446951,2702,6013,9107,53012,00021,20043,300
2003186421,1702,4103,6106,96011,10019,60040,000
2502795831,0402,1403,2106,1809,85017,40035,500
3002535289451,9402,9105,6008,92015,80032,200
3502324868691,7902,6705,1508,21014,50029,600
4002164528091,6602,4904,7907,64013,50027,500
4502034247591,5602,3304,5007,17012,70025,800
5001924017171,4702,2104,2506,77012,00024,400
5501823816811,4002,0904,0306,43011,40023,200
6001743636501,3302,0003,8506,13010,80022,100
6501663486221,2801,9103,6805,87010,40021,200
7001603345981,2301,8403,5405,6409,97020,300
7501543225761,1801,7703,4105,4409,61019,600
8001493115561,1401,7103,2905,2509,28018,900
8501443015381,1001,6503,1905,0808,98018,300
9001392925221,0701,6003,0904,9308,71017,800
9501352835071,0401,5603,0004,7808,46017,200
1,0001322754931,0101,5202,9204,6508,22016,800
1,1001252624689601,4402,7704,4207,81015,900
1,2001192504469171,3702,6404,2207,45015,200
1,3001142394278781,3202,5304,0407,14014,600
1,4001102304118431,2602,4303,8806,86014,000
1,5001062213968121,2202,3403,7406,60013,500
1,6001022143827841,1802,2603,6106,38013,000
1,700992073707591,1402,1903,4906,17012,600
1,800962003587361,1002,1203,3905,98012,200
1,900931953487151,0702,0603,2905,81011,900
2,000911893396951,0402,0103,2005,65011,500

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(6)

SCHEDULE 40 METALLIC PIPE

GasNatural
Inlet Pressure3.0 psi
Pressure Drop2.0 psi
Specific Gravity0.60
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Cubic Feet of Gas Per Hour
102,3504,9209,27019,00028,50054,90087,500155,000316,000
201,6203,3806,37013,10019,60037,70060,100106,000217,000
301,3002,7205,11010,50015,70030,30048,30085,400174,000
401,1102,3204,3808,99013,50025,90041,30073,100149,000
509852,0603,8807,97011,90023,00036,60064,800132,000
608921,8703,5207,22010,80020,80033,20058,700120,000
708211,7203,2306,6409,95019,20030,50054,000110,000
807641,6003,0106,1809,26017,80028,40050,200102,000
907171,5002,8205,8008,68016,70026,70047,10096,100
1006771,4202,6705,4708,20015,80025,20044,50090,800
1256001,2502,3604,8507,27014,00022,30039,50080,500
1505441,1402,1404,4006,59012,70020,20035,70072,900
1755001,0501,9704,0406,06011,70018,60032,90067,100
2004659731,8303,7605,64010,90017,30030,60062,400
2504128621,6203,3305,0009,62015,30027,10055,300
3003747811,4703,0204,5308,72013,90024,60050,100
3503447191,3502,7804,1708,02012,80022,60046,100
4003206691,2602,5903,8707,46011,90021,00042,900
4503006271,1802,4303,6407,00011,20019,70040,200
5002835931,1202,2903,4306,61010,50018,60038,000
5502695631,0602,1803,2606,28010,00017,70036,100
6002575371,0102,0803,1105,9909,55016,90034,400
6502465149691,9902,9805,7409,15016,20033,000
7002364949311,9102,8605,5108,79015,50031,700
7502284768971,8402,7605,3108,47015,00030,500
8002204608661,7802,6605,1308,18014,50029,500
8502134458381,7202,5804,9607,91014,00028,500
9002064318121,6702,5004,8107,67013,60027,700
9502004197891,6202,4304,6707,45013,20026,900
1,0001954077671,5802,3604,5507,24012,80026,100
1,1001853877291,5002,2404,3206,89012,20024,800
1,2001773696951,4302,1404,1206,57011,60023,700
1,3001693536661,3702,0503,9406,29011,10022,700
1,4001623406401,3101,9703,7906,04010,70021,800
1,5001563276161,2701,9003,6505,82010,30021,000
1,6001513165951,2201,8303,5305,62010,00020,300
1,7001463065761,1801,7703,4105,4409,61019,600
1,8001422965581,1501,7203,3105,2709,32019,000
1,9001382885421,1101,6703,2105,1209,05018,400
2,0001342805271,0801,6203,1204,9808,80018,000

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(7)

SCHEDULE 40 METALLIC PIPE

GasNatural
Inlet Pressure5.0 psi
Pressure Drop3.5 psi
Specific Gravity0.60
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Cubic Feet of Gas Per Hour
103,1906,43011,80024,20036,20069,700111,000196,000401,000
202,2504,5508,32017,10025,60049,30078,600139,000283,000
301,8403,7206,79014,00020,90040,30064,200113,000231,000
401,5903,2205,88012,10018,10034,90055,60098,200200,000
501,4302,8805,26010,80016,20031,20049,70087,900179,000
601,3002,6304,8009,86014,80028,50045,40080,200164,000
701,2002,4304,4509,13013,70026,40042,00074,300151,000
801,1502,3304,2608,54012,80024,70039,30069,500142,000
901,0602,1503,9208,05012,10023,20037,00065,500134,000
1009791,9803,6207,43011,10021,40034,20060,400123,000
1258761,7703,2406,6409,95019,20030,60054,000110,000
1507861,5902,9105,9608,94017,20027,40048,50098,900
1757281,4702,6905,5208,27015,90025,40044,90091,600
2006731,3602,4905,1007,65014,70023,50041,50084,700
2505581,1702,2004,5106,76013,00020,80036,70074,900
3005061,0601,9904,0906,13011,80018,80033,30067,800
3504659731,8303,7605,64010,90017,30030,60062,400
4004339051,7103,5005,25010,10016,10028,50058,100
4504068491,6003,2904,9209,48015,10026,70054,500
5003848021,5103,1004,6508,95014,30025,20051,500
5503647621,4402,9504,4208,50013,60024,00048,900
6003487271,3702,8104,2108,11012,90022,90046,600
6503336961,3102,6904,0307,77012,40021,90044,600
7003206691,2602,5903,8807,46011,90021,00042,900
7503086441,2102,4903,7307,19011,50020,30041,300
8002986221,1702,4103,6106,94011,10019,60039,900
8502886021,1302,3303,4906,72010,70018,90038,600
9002795841,1002,2603,3806,52010,40018,40037,400
9502715671,0702,1903,2906,33010,10017,80036,400
1,0002645511,0402,1303,2006,1509,81017,30035,400
1,1002505249872,0303,0305,8409,32016,50033,600
1,2002395009411,9302,9005,5808,89015,70032,000
1,3002294789011,8502,7705,3408,51015,00030,700
1,4002204608661,7802,6605,1308,18014,50029,500
1,5002124438341,7102,5704,9407,88013,90028,400
1,6002054288061,6502,4804,7707,61013,40027,400
1,7001984147801,6002,4004,6207,36013,00026,500
1,8001924017561,5502,3304,4807,14012,60025,700
1,9001863907341,5102,2604,3506,93012,30025,000
2,0001813797141,4702,2004,2306,74011,90024,300

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(8)

SEMIRIGID COPPER TUBING

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop0.3 in. w.c.
Specific Gravity0.60
TUBE SIZE (inch)
NominalK & L1/43/81/25/83/4111/411/22
ACR3/81/25/83/47/811/813/8
Outside0.3750.5000.6250.7500.8751.1251.3751.6252.125
Inside0.3050.4020.5270.6520.7450.9951.2451.4811.959
Length (ft)Capacity in Cubic Feet of Gas Per Hour
102042851482104488061,2702,650
201429581021443085548731,820
30112347821162474457011,460
4010204070992113816001,250
50NA173562881873375321,110
60NA163256791703064821,000
70NA14295273156281443924
80NA13274868145262413859
90NA13264564136245387806
100NA12244360129232366761
125NA11223853114206324675
150NA10203448103186294612
175NANA18314595171270563
200NANA17294189159251523
250NANA15263778141223464
300NANA13233371128202420
350NANA12223165118186387
400NANA11202861110173360
450NANA11192757103162338
500NANA1018255497153319
550NANANA17245192145303
600NANANA16234988139289
650NANANA15224784133277
700NANANA15214581128266
750NANANA14204378123256
800NANANA14204275119247
850NANANA13194073115239
900NANANA13183971111232
950NANANA13183869108225
1,000NANANA12173767105219
1,100NANANA12163563100208
1,200NANANA1116346095199
1,300NANANA1115325891190
1,400NANANA1014315688183
1,500NANANANA14305484176
1,600NANANANA13295282170
1,700NANANANA13285079164
1,800NANANANA13274977159
1,900NANANANA12264774155
2,000NANANANA12254672151

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
  2. NA means a flow of less than 10 cfh.
  3. All table entries have been rounded to three significant digits.

TABLE 402.4(9)

SEMIRIGID COPPER TUBING

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop0.5 in. w.c.
Specific Gravity0.60
TUBE SIZE (inch)
NominalK & L1/43/81/25/83/4111/411/22
ACR3/81/25/83/47/811/813/8
Outside0.3750.5000.6250.7500.8751.1251.3751.6252.125
Inside0.3050.4020.5270.6520.7450.9951.2451.4811.959
Length (ft)Capacity in Cubic Feet of Gas Per Hour
1027551111952765901,0601,6803,490
201838771341904067301,1502,400
301530611071523265869251,930
40132653921312795027911,650
50112347821162474457011,460
60102142741052244036351,320
70NA193968962063715851,220
80NA183663901923455441,130
90NA173459841803245101,060
100NA163256791703064821,000
125NA14285070151271427890
150NA13264564136245387806
175NA12244159125226356742
200NA11223955117210331690
250NANA203448103186294612
300NANA18314494169266554
350NANA16284086155245510
400NANA15263880144228474
450NANA14253575135214445
500NANA13233371128202420
550NANA13223268122192399
600NANA12213064116183381
650NANA12202962111175365
700NANA11202859107168350
750NANA11192757103162338
800NANA1018265599156326
850NANA1018255396151315
900NANANA17245293147306
950NANANA17245090143297
1,000NANANA16234988139289
1,100NANANA15224684132274
1,200NANANA15214480126262
1,300NANANA14204276120251
1,400NANANA13194173116241
1,500NANANA13183971111232
1,600NANANA13183868108224
1,700NANANA12173766104217
1,800NANANA12173664101210
1,900NANANA1116356298204
2,000NANANA1116346095199

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
  2. NA means a flow of less than 10 cfh.
  3. All table entries have been rounded to three significant digits.

TABLE 402.4(10)

SEMIRIGID COPPER TUBING

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop1.0 in. w.c.
Specific Gravity0.60
INTENDED USE: SIZING BETWEEN HOUSE LINE REGULATOR AND THE APPLIANCE
TUBE SIZE (inch)
NominalK & L1/43/81/25/83/4111/411/22
ACR3/81/25/83/47/811/813/8
Outside0.3750.5000.6250.7500.8751.1251.3751.6252.125
Inside0.3050.4020.5270.6520.7450.9951.2451.4811.959
Length (ft)Capacity in Cubic Feet of Gas Per Hour
1039801622834028591,5502,4405,080
2027551111952765901,0601,6803,490
302144891562224748531,3502,800
401838771341904067301,1502,400
501633681191683596471,0202,130
601530611071523265869251,930
70132857991403005398511,770
80132653921312795027911,650
90122449861222624717421,550
100112347821162474457011,460
125NA2041721032193946221,290
150NA183765931983575631,170
175NA173460851833295181,080
200NA163256791703064821,000
250NA14285070151271427890
300NA13264564136245387806
350NA12244159125226356742
400NA11223955117210331690
450NA10213651110197311647
500NANA203448103186294612
550NANA19324698177279581
600NANA18314494169266554
650NANA17304290162255531
700NANA16284086155245510
750NANA16273983150236491
800NANA15263880144228474
850NANA15263678140220459
900NANA14253575135214445
950NANA14243473132207432
1,000NANA13233371128202420
1,100NANA13223268122192399
1,200NANA12213064116183381
1,300NANA12202962111175365
1,400NANA11202859107168350
1,500NANA11192757103162338
1,600NANA1018265599156326
1,700NANA1018255396151315
1,800NANANA17245293147306
1,900NANANA17245090143297
2,000NANANA16234988139289

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
  2. NA means a flow of less than 10 cfh.
  3. All table entries have been rounded to three significant digits.

TABLE 402.4(11)

SEMIRIGID COPPER TUBING

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop17.0 in. w.c.
Specific Gravity0.60
TUBE SIZE (inch)
NominalK & L1/43/81/25/83/4111/411/22
ACR3/81/25/83/47/811/813/8
Outside0.3750.5000.6250.7500.8751.1251.3751.6252.125
Inside0.3050.4020.5270.6520.7450.9951.2451.4811.959
Length (ft)Capacity in Cubic Feet of Gas Per Hour
101903917961,3901,9704,2207,59012,00024,900
201302695479561,3602,9005,2208,23017,100
301052164397681,0902,3304,1906,61013,800
40901853766579321,9903,5905,65011,800
50791643335828261,7703,1805,01010,400
60721483025287491,6002,8804,5409,460
70661372784866891,4702,6504,1808,700
80621272584526411,3702,4603,8908,090
90581192434246011,2802,3103,6507,590
100551132294005681,2102,1803,4407,170
125481002033555031,0801,9403,0506,360
15044901843214569741,7502,7705,760
17540831692964208961,6102,5405,300
20038771572753908341,5002,3704,930
25033691402443467391,3302,1004,370
30030621262213136701,2101,9003,960
35028571162032886161,1101,7503,640
40026531081892685731,0301,6303,390
45024501021772525389681,5303,180
5002347961682385089141,4403,000
5502245911592264828681,3702,850
6002143871522154608291,3102,720
6502041831452064417931,2502,610
7001939801401984237621,2002,500
7501838771351914087341,1602,410
8001837741301843947091,1202,330
8501735721261783816861,0802,250
9001734701221733706651,0502,180
9501633681181683596461,0202,120
1,0001632661151633496289912,060
1,1001531631091553325979411,960
1,2001429601041483165698981,870
1,3001428571001423035458601,790
1,400132755961362915248261,720
1,500132653931312805057961,660
1,600122551891272714877681,600
1,700122449861232624727441,550
1,800112448841192544577211,500
1,900112347811152474447001,460
2,000112245791122404326811,420

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
  2. All table entries have been rounded to three significant digits.

TABLE 402.4(12)

SEMIRIGID COPPER TUBING

GasNatural
Inlet Pressure2.0 psi
Pressure Drop1.0 psi
Specific Gravity0.60
TUBE SIZE (inch)
NominalK & L1/43/81/25/83/4111/411/22
ACR3/81/25/83/47/811/813/8
Outside0.3750.5000.6250.7500.8751.1251.3751.6252.125
Inside0.3050.4020.5270.6520.7450.9951.2451.4811.959
Length (ft)Capacity in Cubic Feet of Gas Per Hour
102455061,0301,8002,5505,4509,82015,50032,200
201693487081,2401,7603,7506,75010,60022,200
301352795689931,4103,0105,4208,55017,800
401162394868501,2102,5804,6407,31015,200
501032124317541,0702,2804,1106,48013,500
60931923916839692,0703,7305,87012,200
70861773596288911,9003,4305,40011,300
80801643345848291,7703,1905,03010,500
90751543145487781,6602,9904,7209,820
100711462965187351,5702,8304,4509,280
125631292634596511,3902,5003,9508,220
150571172384165901,2602,2703,5807,450
175521082193835431,1602,0903,2906,850
200491002043565051,0801,9403,0606,380
25043891813154489561,7202,7105,650
30039801642864068661,5602,4605,120
35036741502633737971,4302,2604,710
40033691402453477411,3302,1004,380
45031651312303266961,2501,9704,110
50030611242173086571,1801,8703,880
55028581182062926241,1201,7703,690
60027551121962795951,0701,6903,520
65026531081882675701,0301,6203,370
70025511031812565489861,5503,240
75024491001742475289501,5003,120
8002347961682395109171,4503,010
8502246931632314938881,4002,920
9002244901582244788611,3602,830
9502143881532174648361,3202,740
1,0002042851492114528131,2802,670
1,1001940811422014297721,2202,540
1,2001838771351924097371,1602,420
1,3001836741291833927051,1102,320
1,4001735711241763766781,0702,230
1,5001634681201703636531,0302,140
1,6001633661161643506309942,070
1,7001531641121593396109622,000
1,8001530621081543295929331,940
1,9001430601051493195759061,890
2,0001429591021453105598811,830

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
  2. All table entries have been rounded to three significant digits.

TABLE 402.4(13)

SEMIRIGID COPPER TUBING

GasNatural
Inlet Pressure2.0 psi
Pressure Drop1.5 psi
Specific Gravity0.60
INTENDED USEPipe sizing between point of delivery and the house line regulator.
Total load supplied by a single house line regulator not exceeding 150 cubic feet per hour.
TUBE SIZE (inch)
NominalK & L1/43/81/25/83/4111/411/22
ACR3/81/25/83/47/811/813/8
Outside0.3750.5000.6250.7500.8751.1251.3751.6252.125
Inside0.3050.4020.5270.6520.7450.9951.2451.4811.959
Length (ft)Capacity in Cubic Feet of Gas Per Hour
103036251,2702,2203,1506,74012,10019,10039,800
202084308741,5302,1704,6308,33013,10027,400
301673457021,2301,7403,7206,69010,60022,000
401432956011,0501,4903,1805,7309,03018,800
501272625329311,3202,8205,0808,00016,700
601152374828431,2002,5604,6007,25015,100
701062184447761,1002,3504,2306,67013,900
80982034137221,0202,1903,9406,21012,900
90921903876779612,0503,6905,82012,100
100871803666409071,9403,4905,50011,500
125771593245678041,7203,0904,88010,200
150701442945147291,5602,8004,4209,200
175641332704726701,4302,5804,0608,460
200601242524406241,3302,4003,7807,870
250531102233905531,1802,1303,3506,980
30048992023535011,0701,9303,0406,320
35044911863254619841,7702,7905,820
40041851733024299161,6502,6005,410
45039801622834028591,5502,4405,080
50036751532683808111,4602,3004,800
55035721462543617711,3902,1904,560
60033681392433447351,3202,0904,350
65032651332323307041,2702,0004,160
70030631282233176761,2201,9204,000
75029601232153056521,1701,8503,850
80028581192082956291,1301,7903,720
85027571152012856091,1001,7303,600
90027551111952765901,0601,6803,490
95026531081892685731,0301,6303,390
1,00025521051842615581,0001,5803,300
1,10024491001752485309541,5003,130
1,2002347951672375059101,4302,990
1,3002245911602274848711,3702,860
1,4002143881532184658371,3202,750
1,5002042851482104488061,2702,650
1,6001940821432024327791,2302,560
1,7001939791381964197531,1902,470
1,8001838771341904067311,1502,400
1,9001837741301843947091,1202,330
2,0001736721261793836901,0902,270

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
  2. Where this table is used to size the tubing upstream of a line pressure regulator, the pipe or tubing downstream of the line pressure regulator shall be sized using a pressure drop not greater than 1 inch w.c.
  3. All table entries have been rounded to three significant digits.

TABLE 402.4(14)

SEMIRIGID COPPER TUBING

GasNatural
Inlet Pressure5.0 psi
Pressure Drop3.5 psi
Specific Gravity0.60
TUBE SIZE (inch)
NominalK & L1/43/81/25/83/4111/411/22
ACR3/81/25/83/47/811/813/8
Outside0.3750.5000.6250.7500.8751.1251.3751.6252.125
Inside0.3050.4020.5270.6520.7450.9951.2451.4811.959
Length (ft)Capacity in Cubic Feet of Gas Per Hour
105111,0502,1403,7505,32011,40020,40032,20067,100
203517241,4702,5803,6507,80014,00022,20046,100
302825821,1802,0702,9306,27011,30017,80037,000
402414981,0101,7702,5105,3609,66015,20031,700
502144418981,5702,2304,7508,56013,50028,100
601944008131,4202,0204,3107,75012,20025,500
701783687481,3101,8603,9607,13011,20023,400
801663426961,2201,7303,6906,64010,50021,800
901563216531,1401,6203,4606,2309,82020,400
1001473036171,0801,5303,2705,8809,27019,300
1251302695479551,3602,9005,2108,22017,100
1501182434958661,2302,6204,7207,45015,500
1751092244567961,1302,4104,3506,85014,300
2001012084247411,0502,2504,0406,37013,300
250901853766579321,9903,5805,65011,800
300811673405958441,8003,2505,12010,700
350751543135477771,6602,9904,7109,810
400691432915097221,5402,7804,3809,120
450651342734786781,4502,6104,1108,560
500621272584516401,3702,4603,8808,090
550581212454296081,3002,3403,6907,680
600561152344095801,2402,2303,5207,330
650531102243925561,1902,1403,3707,020
700511062153765341,1402,0503,2406,740
750491022073625141,1001,9803,1206,490
80048982003504971,0601,9103,0106,270
85046951943394811,0301,8502,9106,070
90045921883284661,0001,7902,8205,880
95043901823194529671,7402,7405,710
1,00042871773104409401,6902,6705,560
1,10040831692954188931,6102,5305,280
1,20038791612813998521,5302,4205,040
1,30037761542693828161,4702,3204,820
1,40035731482593677841,4102,2204,630
1,50034701432493537551,3602,1404,460
1,60033681382413417291,3102,0704,310
1,70032651332333307051,2702,0004,170
1,80031631292263206841,2301,9404,040
1,90030621252193116641,2001,8903,930
2,00029601222133026461,1601,8303,820

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
  2. All table entries have been rounded to three significant digits.

TABLE 402.4(15)

CORRUGATED STAINLESS STEEL TUBING (CSST)

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop0.5 in. w.c.
Specific Gravity0.60
TUBE SIZE (EHD)
Flow
Designation
1315181923253031373946486062
Length (ft)Capacity in Cubic Feet of Gas Per Hour
546631151342252704715468951,0371,7902,0703,6604,140
10324482951611923303836397461,2601,4702,6002,930
15253566771321572673105246151,0301,2002,1402,400
20223158671161372312694565368881,0501,8502,080
25192752601041222062404094827939361,6601,860
3018254755961121882183744427238561,5201,700
401521414783971621883253866257421,3201,470
501319374275871441682923475596651,1801,320
601217343868801311532673185096081,0801,200
701116313663741211412482954715631,0001,110
801015293360691131322322774405279401,040
90101428325765107125219262415498887983
10091326305462101118208249393472843933
150710202342487891171205320387691762
20069182138447182148179277336600661
25058161934396374133161247301538591
3005715173236576795148226275492540

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n, where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.
  2. EHD—Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
  3. All table entries have been rounded to three significant digits.

TABLE 402.4(16)

CORRUGATED STAINLESS STEEL TUBING (CSST)

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop3.0 in. w.c.
Specific Gravity0.60
INTENDED USE: Initial supply pressure of 8.0 inches w.c. or greater
TUBE SIZE (EHD)
Flow
Designation
13151819232530313746486062
Length (ft)Capacity in Cubic Feet of Gas Per Hour
51201602773275296491,1801,3702,1404,4305,0108,80010,100
10831121972313804628289581,5303,2003,5606,2707,160
1567901611893133796737781,2502,5402,9105,1405,850
2057781401642733295806721,0902,2002,5304,4605,070
2551691251472452955185999781,9602,2704,0004,540
3046631151342252704715468951,7902,0703,6604,140
4039541001161962344074717781,5501,8003,1803,590
503548891041762103634216981,3801,6102,8503,210
60324482951611923303836391,2601,4702,6002,930
70294176881501783063555931,1701,3602,4202,720
80273871821411672853315551,0901,2802,2602,540
90263667771331572683115241,0301,2002,1402,400
100243463731261492542954989741,1402,0302,280
150192752601041222062404097939361,6601,860
20017234552911061782073556868121,4401,610
2501521404682951591843196137281,2901,440
3001319374275871441682345596651,1801,320

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.
  2. EHD—Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
  3. All table entries have been rounded to three significant digits.

TABLE 402.4(17)

CORRUGATED STAINLESS STEEL TUBING (CSST)

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop6.0 in. w.c.
Specific Gravity0.60
INTENDED USE: Initial supply pressure of 11.0 inches w.c. or greater
TUBE SIZE (EHD)
Flow
Designation
13151819232530313746486062
Length (ft)Capacity in Cubic Feet of Gas Per Hour
51732293894617379111,6901,9503,0006,2807,05012,40014,260
101201602773275296491,1801,3702,1404,4305,0108,80010,100
15961302272674365329601,1101,7603,6104,1007,2108,260
20831121972313804628289581,5303,1203,5606,2707,160
2574991762073424147398551,3702,7903,1905,6206,400
3067901611893133796737781,2502,5402,9105,1405,850
4057781401642733295806721,0902,2002,5304,4605,070
5051691251472452955185999781,9602,2704,0004,540
6046631151342252704715468951,7902,0703,6604,140
7042581061242092504355058301,6601,9203,3903,840
8039541001161962344074717781,5501,8003,1803,590
903751941091852213834447351,4601,7003,0003,390
1003548891041762103634216981,3801,6102,8503,210
150283973851451722943425731,1301,3202,3402,630
200243463731261492542954989741,1402,0302,280
250213057661141342262634478701,0201,8202,040
300192752601041222062404097939361,6601,860

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.
  2. EHD—Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
  3. All table entries have been rounded to three significant digits.

TABLE 402.4(18)

CORRUGATED STAINLESS STEEL TUBING (CSST)

GasNatural
Inlet Pressure2 psi
Pressure Drop1.0 psi
Specific Gravity0.60
TUBE SIZE (EHD)
Flow
Designation
1315181923253031373946486062
Length (ft)Capacity in Cubic Feet of Gas Per Hour
102703535877001,1001,3702,5902,9904,5105,0379,60010,70018,60021,600
251662203744447098761,6201,8702,8903,2586,0406,78011,90013,700
301512003424056508011,4801,7002,6402,9875,5106,20010,90012,500
401291722973515676961,2701,4702,3002,6054,7605,3809,44010,900
501151542663145106241,1401,3102,0602,3434,2604,8208,4709,720
75931242182574205129221,0701,6901,9323,4703,9506,9407,940
80891202112494074968921,0301,6401,8743,3603,8206,7307,690
100791071892223664457959201,4701,6853,0003,4206,0306,880
15064871551823023646467481,2101,3892,4402,8004,9405,620
20055751351572633175576451,0501,2122,1102,4304,2904,870
25049671211412362844975769411,0901,8902,1803,8504,360
30044611101292172604535258629991,7201,9903,5203,980
4003852961111892253904537498711,4901,7303,0603,450
5003446861001702023484045527831,3301,5502,7403,090

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 3/4 psi, DO NOT USE THIS TABLE. Consult with the regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary with flow rate.
  2. CAUTION: Capacities shown in the table might exceed maximum capacity for a selected regulator. Consult with the regulator or tubing manufacturer for guidance.
  3. Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.
  4. EHD—Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
  5. All table entries have been rounded to three significant digits.

TABLE 402.4(19)

CORRUGATED STAINLESS STEEL TUBING (CSST)

GasNatural
Inlet Pressure5.0 psi
Pressure Drop3.5 psi
Specific Gravity0.60
TUBE SIZE (EHD)
Flow
Designation
1315181923253031373946486062
Length (ft)Capacity in Cubic Feet of Gas Per Hour
105236741,0801,3002,0002,5304,9205,6608,3009,14018,10019,80034,40040,400
253224206918271,2901,6203,0803,5405,3105,91111,40012,60022,00025,600
302923826327551,1801,4802,8003,2304,8605,42010,40011,50020,10023,400
402513295496541,0301,2802,4202,7904,2304,7278,97010,00017,40020,200
502232934925869261,1502,1602,4903,7904,2518,0208,93015,60018,100
751802384034797639441,7502,0203,1103,5066,5307,32012,80014,800
801742303914637409151,6901,9603,0203,4006,3207,09012,40014,300
1001542053504156658201,5101,7402,7103,0575,6506,35011,10012,800
1501241662873395486721,2301,4202,2202,5214,6005,2009,13010,500
2001071432492944785841,0601,2201,9302,1993,9804,5107,9309,090
250951282232634305249451,0901,7301,9773,5504,0407,1108,140
300861162042403944798609951,5901,8133,2403,6906,5007,430
400741001772083434167428581,3801,5812,8003,2105,6506,440
50066891591863093736627661,0401,4222,5002,8705,0605,760

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds 3/4 psi, DO NOT USE THIS TABLE. Consult with the regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary with flow rate.
  2. CAUTION: Capacities shown in the table might exceed maximum capacity for a selected regulator. Consult with the regulator or tubing manufacturer for guidance.
  3. Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings and/or bends.
  4. EHD—Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD, the greater the gas capacity of the tubing.
  5. All table entries have been rounded to three significant digits.

TABLE 402.4(20)

POLYETHYLENE PLASTIC PIPE

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop0.3 in. w.c.
Specific Gravity0.60
PIPE SIZE (inch)
Nominal OD1/23/4111/411/2234
DesignationSDR 9SDR 11SDR 11SDR 10SDR 11SDR 11SDR 11SDR 11
Actual ID0.6600.8601.0771.3281.5541.9432.8643.682
Length (ft)Capacity in Cubic Feet of Gas per Hour
101533055519551,4402,5907,17013,900
201052103796569911,7804,9209,520
30841693045277961,4303,9507,640
40721442604516811,2203,3806,540
50641282314006041,0803,0005,800
60581162093625479832,7205,250
70531071923335039042,5004,830
8050991793104688412,3304,500
9046931682914397892,1804,220
10044881592754157452,0603,990
12539781412433686611,8303,530
15035711272213335981,6603,200
17532651172033065511,5202,940
20030601091892855121,4202,740
2502754971672534541,2602,430
3002448881522294111,1402,200
3502245811392113781,0502,020
4002142751301963529741,880
4501939701221843309141,770
5001837661151743128631,670

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(21)

POLYETHYLENE PLASTIC PIPE

GasNatural
Inlet PressureLess than 2 psi
Pressure Drop0.5 in. w.c.
Specific Gravity0.60
PIPE SIZE (inch)
Nominal OD1/23/4111/411/2234
DesignationSDR 9SDR 11SDR 11SDR 10SDR 11SDR 11SDR 11SDR 11
Actual ID0.6600.8601.0771.3281.5541.9432.8643.682
Length (ft)Capacity in Cubic Feet of Gas per Hour
102014037261,2601,9003,4109,45018,260
201382774998651,3102,3506,49012,550
301112224016951,0501,8805,21010,080
40951903435948981,6104,4608,630
50841693045277961,4303,9507,640
60761532764777211,3003,5806,930
70701402544396631,1903,3006,370
80651312364096171,1103,0705,930
90611232213835791,0402,8805,560
100581162093625479832,7205,250
125511031853214858712,4104,660
15046931682914397892,1804,220
17543861542684047262,0103,880
20040801442493766751,8703,610
25035711272213335981,6603,200
30032641152003025421,5002,900
35029591061842784991,3802,670
4002755991712584641,2802,480
4502651931602424351,2002,330
5002448881522294111,1402,200

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(22)

POLYETHYLENE PLASTIC PIPE

GasNatural
Inlet Pressure2.0 psi
Pressure Drop1.0 psi
Specific Gravity0.60
PIPE SIZE (inch)
Nominal OD1/23/4111/411/2234
DesignationSDR 9SDR 11SDR 11SDR 10SDR 11SDR 11SDR 11SDR 11
Actual ID0.6600.8601.0771.3281.5541.9432.8643.682
Length (ft)Capacity in Cubic Feet of Gas per Hour
101,8603,7206,71011,60017,60031,60087,300169,000
201,2802,5604,6107,99012,10021,70060,000116,000
301,0302,0503,7106,4209,69017,40048,20093,200
408781,7603,1705,4908,30014,90041,20079,700
507781,5602,8104,8707,35013,20036,60070,700
607051,4102,5504,4106,66012,00033,10064,000
706491,3002,3404,0606,13011,00030,50058,900
806031,2102,1803,7805,70010,20028,30054,800
905661,1302,0503,5405,3509,61026,60051,400
1005351,0701,9303,3505,0509,08025,10048,600
1254749491,7102,9704,4808,05022,30043,000
1504298601,5502,6904,0607,29020,20039,000
1753957911,4302,4703,7306,71018,60035,900
2003687361,3302,3003,4706,24017,30033,400
2503266521,1802,0403,0805,53015,30029,600
3002955911,0701,8502,7905,01013,90026,800
3502725449811,7002,5704,61012,80024,700
4002535069131,5802,3904,29011,90022,900
4502374758561,4802,2404,02011,10021,500
5002244488091,4002,1203,80010,50020,300
5502134267681,3302,0103,6109,99019,300
6002034067331,2701,9203,4409,53018,400
6501943897021,2201,8403,3009,13017,600
7001873746741,1701,7603,1708,77016,900
7501803606491,1301,7003,0508,45016,300
8001743486271,0901,6402,9508,16015,800
8501683366071,0501,5902,8507,89015,300
9001633265881,0201,5402,7707,65014,800
9501583175729901,5002,6907,43014,400
1,0001543085569631,4502,6107,23014,000
1,1001462935289151,3802,4806,87013,300
1,2001392795048731,3202,3706,55012,700
1,3001342674828361,2602,2706,27012,100
1,4001282574638031,2102,1806,03011,600
1,5001242474467731,1702,1005,81011,200
1,6001192394317471,1302,0305,61010,800
1,7001152314177231,0901,9605,43010,500
1,8001122244047011,0601,9005,26010,200
1,9001092183936801,0301,8505,1109,900
2,0001062123826621,0001,8004,9709,600

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(23)

POLYETHYLENE PLASTIC TUBING

GasNatural
Inlet PressureLess than 2.0 psi
Pressure Drop0.3 in. w.c.
Specific Gravity0.60
PLASTIC TUBING SIZE (CTS) (inch)
Nominal OD1/23/4
DesignationSDR 7SDR 11
Actual ID0.4450.927
Length (ft)Capacity in Cubic Feet of Gas per Hour
1054372
2037256
3030205
4026176
5023156
6021141
7019130
8018121
9017113
10016107
1251495
1501386
1751279
2001174
2251069
250NA65
275NA62
300NA59
350NA54
400NA51
450NA47
500NA45

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. NA means a flow of less than 10 cfh.
  2. All table entries have been rounded to three significant digits.

TABLE 402.4(24)

POLYETHYLENE PLASTIC TUBING

GasNatural
Inlet PressureLess than 2.0 psi
Pressure Drop0.5 in. w.c.
Specific Gravity0.60
PLASTIC TUBING SIZE (CTS) (inch)
Nominal OD1/23/4
DesignationSDR 7SDR 11
Actual ID0.4450.927
Length (ft)Capacity in Cubic Feet of Gas per Hour
1072490
2049337
3039271
4034232
5030205
6027186
7025171
8023159
9022149
10021141
12518125
15017113
17515104
2001497
2251391
2501286
2751182
3001178
3501072
400NA67
450NA63
500NA59

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:

  1. NA means a flow of less than 10 cfh.
  2. All table entries have been rounded to three significant digits.

TABLE 402.4(25)

SCHEDULE 40 METALLIC PIPE

GasUndiluted Propane
Inlet Pressure10.0 psi
Pressure Drop1.0 psi
Specific Gravity1.50
INTENDED USEPipe sizing between first stage (high-pressure regulator) and second stage (low-pressure regulator).
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Thousands of Btu per Hour
103,3206,95013,10026,90040,30077,600124,000219,000446,000
202,2804,7809,00018,50027,70053,30085,000150,000306,000
301,8303,8407,22014,80022,20042,80068,200121,000246,000
401,5703,2806,18012,70019,00036,60058,400103,000211,000
501,3902,9105,48011,30016,90032,50051,70091,500187,000
601,2602,6404,97010,20015,30029,40046,90082,900169,000
701,1602,4304,5709,38014,10027,10043,10076,300156,000
801,0802,2604,2508,73013,10025,20040,10070,900145,000
901,0102,1203,9908,19012,30023,60037,70066,600136,000
1009562,0003,7707,73011,60022,30035,60062,900128,000
1258481,7703,3406,85010,30019,80031,50055,700114,000
1507681,6103,0206,2109,30017,90028,60050,500103,000
1757061,4802,7805,7108,56016,50026,30046,50094,700
2006571,3702,5905,3207,96015,30024,40043,20088,100
2505821,2202,2904,7107,06013,60021,70038,30078,100
3005281,1002,0804,2706,40012,30019,60034,70070,800
3504861,0201,9103,9305,88011,30018,10031,90065,100
4004529451,7803,6505,47010,50016,80029,70060,600
4504248861,6703,4305,1409,89015,80027,90056,800
5004008371,5803,2404,8509,34014,90026,30053,700
5503807951,5003,0704,6108,87014,10025,00051,000
6003637591,4302,9304,4008,46013,50023,90048,600
6503477261,3702,8104,2108,11012,90022,80046,600
7003346981,3102,7004,0407,79012,40021,90044,800
7503216721,2702,6003,9007,50012,00021,10043,100
8003106491,2202,5103,7607,24011,50020,40041,600
8503006281,1802,4303,6407,01011,20019,80040,300
9002916091,1502,3603,5306,80010,80019,20039,100
9502835921,1102,2903,4306,60010,50018,60037,900
1,0002755751,0802,2303,3306,42010,20018,10036,900
1,1002615461,0302,1103,1706,1009,72017,20035,000
1,2002495219822,0203,0205,8209,27016,40033,400
1,3002394999401,9302,8905,5708,88015,70032,000
1,4002294809031,8502,7805,3508,53015,10030,800
1,5002214628701,7902,6805,1608,22014,50029,600
1,6002134468401,7302,5904,9807,94014,00028,600
1,7002064328131,6702,5004,8207,68013,60027,700
1,8002004197891,6202,4304,6707,45013,20026,900
1,9001944077661,5702,3604,5407,23012,80026,100
2,0001893957451,5302,2904,4107,03012,40025,400

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(26)

SCHEDULE 40 METALLIC PIPE

GasUndiluted Propane
Inlet Pressure10.0 psi
Pressure Drop3.0 psi
Specific Gravity1.50
INTENDED USEPipe sizing between first stage (high-pressure regulator) and second stage (low-pressure regulator).
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Thousands of Btu per Hour
105,89012,30023,20047,60071,300137,000219,000387,000789,000
204,0508,46015,90032,70049,00094,400150,000266,000543,000
303,2506,79012,80026,30039,40075,800121,000214,000436,000
402,7805,81011,00022,50033,70064,900103,000183,000373,000
502,4605,1509,71019,90029,90057,50091,600162,000330,000
602,2304,6708,79018,10027,10052,10083,000147,000299,000
702,0504,3008,09016,60024,90047,90076,400135,000275,000
801,9104,0007,53015,50023,20044,60071,100126,000256,000
901,7903,7507,06014,50021,70041,80066,700118,000240,000
1001,6903,5406,67013,70020,50039,50063,000111,000227,000
1251,5003,1405,91012,10018,20035,00055,80098,700201,000
1501,3602,8405,36011,00016,50031,70050,60089,400182,000
1751,2502,6204,93010,10015,20029,20046,50082,300167,800
2001,1602,4304,5809,41014,10027,20043,30076,500156,100
2501,0302,1604,0608,34012,50024,10038,40067,800138,400
3009351,9503,6807,56011,30021,80034,80061,500125,400
3508601,8003,3906,95010,40020,10032,00056,500115,300
4008001,6703,1506,4709,69018,70029,80052,600107,300
4507511,5702,9606,0709,09017,50027,90049,400100,700
5007091,4802,7905,7308,59016,50026,40046,60095,100
5506731,4102,6505,4508,16015,70025,00044,30090,300
6006421,3402,5305,2007,78015,00023,90042,20086,200
6506151,2902,4204,9807,45014,40022,90040,50082,500
7005911,2402,3304,7807,16013,80022,00038,90079,300
7505691,1902,2404,6006,90013,30021,20037,40076,400
8005501,1502,1704,4506,66012,80020,50036,20073,700
8505321,1102,1004,3006,45012,40019,80035,00071,400
9005161,0802,0304,1706,25012,00019,20033,90069,200
9505011,0501,9704,0506,07011,70018,60032,90067,200
1,0004871,0201,9203,9405,90011,40018,10032,00065,400
1,1004639681,8203,7405,61010,80017,20030,40062,100
1,2004429231,7403,5705,35010,30016,40029,00059,200
1,3004238841,6703,4205,1209,87015,70027,80056,700
1,4004068491,6003,2804,9209,48015,10026,70054,500
1,5003918181,5403,1604,7409,13014,60025,70052,500
1,6003787901,4903,0604,5808,82014,10024,80050,700
1,7003667651,4402,9604,4308,53013,60024,00049,000
1,8003557411,4002,8704,3008,27013,20023,30047,600
1,9003447201,3602,7804,1708,04012,80022,60046,200
2,0003357001,3202,7104,0607,82012,50022,00044,900

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(27)

SCHEDULE 40 METALLIC PIPE

GasUndiluted Propane
Inlet Pressure2.0 psi
Pressure Drop1.0 psi
Specific Gravity1.50
INTENDED USEPipe sizing between 2 psig service and line pressure regulator.
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Thousands of Btu per Hour
102,6805,59010,50021,60032,40062,40099,500176,000359,000
201,8403,8507,24014,90022,30042,90068,400121,000247,000
301,4803,0905,82011,90017,90034,50054,90097,100198,000
401,2602,6404,98010,20015,30029,50047,00083,100170,000
501,1202,3404,4109,06013,60026,10041,70073,700150,000
601,0102,1204,0008,21012,30023,70037,70066,700136,000
709341,9503,6807,55011,30021,80034,70061,400125,000
808691,8203,4207,02010,50020,30032,30057,100116,000
908151,7003,2106,5909,88019,00030,30053,600109,000
1007701,6103,0306,2309,33018,00028,60050,600103,000
1256821,4302,6905,5208,27015,90025,40044,90091,500
1506181,2902,4405,0007,49014,40023,00040,70082,900
1755691,1902,2404,6006,89013,30021,20037,40076,300
2005291,1102,0804,2806,41012,30019,70034,80071,000
2504699811,8503,7905,68010,90017,40030,80062,900
3004258891,6703,4405,1509,92015,80027,90057,000
3503918171,5403,1604,7409,12014,50025,70052,400
4003647601,4302,9404,4108,49013,50023,90048,800
4503417141,3402,7604,1307,96012,70022,40045,800
5003226741,2702,6103,9107,52012,00021,20043,200
5503066401,2102,4803,7107,14011,40020,10041,100
6002926111,1502,3603,5406,82010,90019,20039,200
6502805851,1002,2603,3906,53010,40018,40037,500
7002695621,0602,1703,2606,2709,99017,70036,000
7502595411,0202,0903,1406,0409,63017,00034,700
8002505239852,0203,0305,8309,30016,40033,500
8502425069531,9602,9305,6409,00015,90032,400
9002354909241,9002,8405,4708,72015,40031,500
9502284768971,8402,7605,3108,47015,00030,500
1,0002224638731,7902,6805,1708,24014,60029,700
1,1002104408291,7002,5504,9107,83013,80028,200
1,2002014207911,6202,4304,6807,47013,20026,900
1,3001924027571,5502,3304,4907,15012,60025,800
1,4001853867271,4902,2404,3106,87012,10024,800
1,5001783727011,4402,1604,1506,62011,70023,900
1,6001723596771,3902,0804,0106,39011,30023,000
1,7001663486551,3402,0103,8806,18010,90022,300
1,8001613376351,3001,9503,7606,00010,60021,600
1,9001573276171,2701,9003,6505,82010,30021,000
2,0001523186001,2301,8403,5505,66010,00020,400

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa, 1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note: All table entries have been rounded to three significant digits.

TABLE 402.4(28)

SCHEDULE 40 METALLIC PIPE

GasUndiluted Propane
Inlet Pressure11.0 in. w.c.
Pressure Drop0.5 in. w.c.
Specific Gravity1.50
INTENDED USEPipe sizing between single- or second-stage (low pressure) regulator and appliance.
PIPE SIZE (inch)
Nominal1/23/4111/411/2221/234
Actual ID0.6220.8241.0491.3801.6102.0672.4693.0684.026
Length (ft)Capacity in Thousands of Btu per Hour
102916081,1502,3503,5206,79010,80019,10039,000
202004187871,6202,4204,6607,43013,10026,800
301603366321,3001,9403,7505,97010,60021,500
401372875411,1101,6603,2105,1109,03018,400
501222554809851,4802,8404,5308,00016,300
601102314348921,3402,5704,1007,25014,800
801012124008211,2302,3703,7706,67013,600
100941973727631,1402,2003,5106,21012,700
125891853497161,0702,0703,2905,82011,900
150841753306771,0101,9503,1105,50011,200
175741552926008991,7302,7604,8809,950
200671402655438141,5702,5004,420