AG 31-011 • REFRIGERANT PIPING DESIGN 60 www.DaikinApplied.com
Table 32: Equivalent Length for Fittings – SI
Nominal
Diameter
Smooth Elbows
Smooth Bend Tee Connections
90° Std
90° Long
Radius
90° Street
45° Std
45° Street
180° Std
Tee Branch
Flow
Straight Through Flow
No
Reduction
Reduced
25%
Reduced
50%
12
0.4
0.3
0.7
0.2
0.3
0.7
0.8
0.3
0.4
0.4
15
0.5
0.3
0.8
0.2
0.4
0.8
0.9
0.3
0.4
0.5
22
0.6
0.4
1.0
0.3
0.5
1.0
1.2
0.4
0.6
0.6
28
0.8
0.5
1.2
0.4
0.6
1.2
1.5
0.5
0.7
0.8
35
1.0
0.7
1.7
0.5
0.9
1.7
2.1
0.7
0.9
1.0
42
1.2
0.8
1.9
0.6
1.0
1.9
2.4
0.8
1.1
1.2
54
1.5
1.0
2.5
0.8
1.4
2.5
3.0
1.0
1.4
1.5
67
1.8
1.2
3.0
1.0
1.6
3.0
3.7
1.2
1.7
1.8
79
2.3
1.5
3.7
1.2
2.0
3.7
4.6
1.5
2.1
2.3
90
2.7
1.8
4.6
1.4
2.2
4.6
5.5
1.8
2.4
2.7
105
3.0
2.0
5.2
1.6
2.6
5.2
6.4
2.0
2.7
3.0
130
4.0
2.5
6.4
2.0
3.4
6.4
7.6
2.5
3.7
4.0
156
4.9
3.0
7.6
2.4
4.0
7.6
9
3.0
4.3
4.9
206
6.1
4.0
—
3.0
—
10
12
4.0
5.5
6.1
257
7.6
4.9
—
4.0
—
13
15
4.9
7.0
7.6
300
9.1
5.8
—
4.9
—
15
18
5.8
7.9
9.1
ASHRAE Handbook Refrigeration, Chapter 2, 2006.
© American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.,
Table 33: Equivalent Length for Valves and Refrigeration Devices – SI
Nominal
Diameter
Globe or
Solenoid
60° Wye
Valve
45° Wye
Valve
Angle Valve
Gate Valve
Swing Check
Sight Glass
Filter-Drier
Suction Filter
12
5.2
2.4
1.8
1.8
0.2
1.5
—
—
—
15
5.5
2.7
2.1
2.1
0.2
1.8
—
—
—
22
6.7
3.4
2.1
2.1
0.3
2.2
—
—
—
28
8.8
4.6
3.7
3.7
0.3
3.0
—
—
—
35
12
6.1
4.6
4.6
0.5
4.3
—
—
—
42
13
7.3
5.5
5.5
0.5
4.9
—
—
—
54
17
9.1
7.3
7.3
0.73
6.1
—
—
—
67
21
11
8.8
8.8
0.9
7.6
—
—
—
79
26
13
11
11
1.0
9.1
—
—
—
90
30
15
13
13
1.2
10
—
—
—
105
37
18
14
14
1.4
12
—
—
—
130
43
22
18
18
1.8
15
—
—
—
156
52
27
21
21
2.1
18
—
—
—
206
62
35
26
26
2.7
24
—
—
—
257
85
44
32
32
3.7
30
—
—
—
300
98
50
40
40
4.0
37
—
—
—
ASHRAE Handbook Refrigeration, Chapter 2, 2006.
© American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.,