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# Gas Pipes - Low Pressure Sizing

With more than one consumer supplied from a service pipe a diversity in consumption as indicated below can be expected:

Gas Pipes - Low Pressure Sizing
No. of ApartmentsNominal Size of Gas Pipe (inches)
Length of Service Pipe (feet)
20405060708090100110
4 2 2 2 2 2 2 2 2 2
8 2 2 2 2 2 2 2 2 2
10 2 2 2 2 2 2 2 2 2
12 2 2 2 2 2 2 2 2 2.5
14 2 2 2 2 2 2.5 2.5 2.5 2.5
16 2 2 2 2.5 2.5 2.5 2.5 2.5 2.5
20 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
24 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 3
30 2.5 2.5 2.5 2.5 3 3 3 3
40 2.5 2.5 3 3 3 3 3 3 4
48 3 3 3 3 3 4 4 4 4
.
Gas Pipes - Low Pressure Sizing
No. of ApartmentsNominal Size of Gas Pipe (inches)
Length of Service Pipe (feet)
120130140150160170180190200
4 2 2 2 2 2 2 2 2 2
8 2 2 2 2 2 2 2 2 2
10 2 2 2 2.5 2.5 2.5 2.5 2.5 2.5
12 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
14 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
16 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
20 2.5 2.5 2.5 3 3 3 3 3 3
24 3 3 3 3 3 3 3 3 3
30 3 3 3 3 3 3 3 3 3
40 4 4 4 4 4 4 4 4 4
48 4 4 4 4 4 4 4 4 4
• 1 ft (foot) = 0.3048 m

The table is based on schedule 40 steel pipe and can be used for a low pressure services lines with pressure head 6 inH2O and gas with 0.6 specific gravity and pressure drop 0.3 inH2O.

## Related Topics

### • Fluid Flow and Pressure Loss in Pipes and Tubes

Fluid flow and pressure loss in pipe lines. Water and sewer systems. Steel pipes, pvc pipes, copper tubes and more.

### • Gases and Compressed Air

Properties of air, LNG, LPG and other common gases. Pipeline capacities and sizing of relief valves.

## Related Documents

### House Gas Pipes - Capacities vs. Dimensions

Carrying capacity of house gas pipes - in imperial and metric units.

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Specific heat of Methane Gas - CH4 - at temperatures ranging 200 - 1100 K.

### Natural Gas - Equipment Consumption

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### Natural Gas - Pipe Sizing Calculator

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### Natural Gas Pipes - Low Pressure Capacities vs. Size

Sizing low pressure natural gas pipe lines - Imperial units.

### Natural Gas Piping - Sizing vs. Capacity

Sizing natural gas pipes - pressures above 5 psi (35 kPa).

### Propane Gas - Sizing of Pipe Lines

Sizing low pressure propane gas pipe lines - Metric units.

### Propane Gas Piping - Capacity vs. Size

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

### Propane Gas Piping - Low Pressure Capacity vs. Size

Sizing of low pressure propane gas pipe lines - Imperial units.

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