Daikin R-22 Refrigerant Piping Design Manual page 60

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