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Fuel Oil Pipe Sizes Table

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Pipe Sizes for Fuel Oil Table Oil Suction

The following are the recommended Nominal Size for Fuel Oil Suction line from the storage tank to the supply pump.

Residual Fuel Oil Grades No. 5 and No. 6
Pumping
Rate,
gph
Length of Run in Feet at Maximum Suction Lift of 15 ft
25
50
75
100
125
150
175
200
250
300
10
1 - 1/2
1 - 1/2
1 - 1/2
1 - 1/2
1 - 1/2
1 - 1/2
2
2
2 - 1/2
2 - 1/2
40
1 - 1/2
1 - 1/2
1 - 1/2
2
2
2 - 1/2
2 - 1/2
2 - 1/2
2 - 1/2
3
70
1 - 1/2
2
2
2
2
2 - 1/2
2 - 1/2
2 - 1/2
3
3
100
2
2
2
2 - 1/2
2 - 1/2
3
3
3
3
3
130
2
2
2 - 1/2
2 - 1/2
2 - 1/2
3
3
3
3
4
160
2
2
2 - 1/2
2 - 1/2
2 - 1/2
3
3
3
4
4
190
2
2 1/2
2 - 1/2
2 - 1/2
3
3
3
4
4
4
220
2 - 1/2
2 - 1/2
2 - 1/2
3
3
3
4
4
4
4

 

Fuel Oil Distillate Grades No. 1 and No. 2
Pumping
Rate,
gph
Length of Run in Feet at Maximum Suction Lift of 10 ft
25
50
75
100
125
150
175
200
250
300
10
1/2
1/2
1/2
1/2
1/2
1/2
1/2
3/4
3/4
1
40
1/2
1/2
1/2
1/2
1/2
3/4
3/4
3/4
3/4
1
70
1/2
1/2
3/4
3/4
3/4
3/4
3/4
1
1
1
100
1/2
3/4
3/4
3/4
3/4
1
1
1
1
1 - 1/4
130
1/2
3/4
3/4
1
1
1
1
1
1 1/4
1 - 1/4
160
3/4
3/4
3/4
1
1
1
1
1 - 1/4
1 - 1/4
1 - 1/4
190
3/4
3/4
1
1
1
1
1 - 1/4
1 - 1/4
1 - 1/4
2
220
3/4
1
1
1
1
1 - 1/4
1 - 1/4
1 - 1/4
1 - 1/4
2

Notes:

1. Pipe sizes smaller than 1 in. IPS are not recommended for use with residual grade fuel oils.

2. Lines conveying fuel oil from pump discharge port to burners and tank return may be reduced by one or two sizes, depending on piping length and pressure losses.

3. All sizes given in inches

Source:

Derived from data within 2017 ASHRAE Handbook - Fundamentals, ASHRAE, 2017.

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