Tecumseh Argus - Page 24

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©2019 Tecumseh Compressor Company LLC. All rights reserved. TPC Part #71511 | Rev A 05/13/2019www.tecumseh.com
Line Sizing
(Continued)
TABLE 2 – Pressure Loss of Liquid Refrigerants in Liquid Line Risers
(Expressed in Pressure Drop, PSIG and Subcooling loss, °F)
Refrigerant
Liquid Line Rise in Feet
10’ 15’ 20’ 25’ 30’ 40’ 50’ 75’ 100’
PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG °F
R-407 4.3 1.4 6.4 2.0 8.5 2.7 10.6 3.4 12.8 4.1 17.0 5.4 21.3 6.8 31.9 10.1 42.5 13.5
R-448A, R-449A 4.3 1.1 6.5 1.7 8.7 2.3 10.9 2.8 13.0 3.4 17.4 4.5 21.7 5.6 32.6 8.3 43.5 10.9
R-507, R-404A 4.1 1.1 6.1 1.6 8.2 2.1 10.2 2.7 12.2 3.3 16.3 4.1 20.4 5.6 30.6 8.3 40.8 11.8
TABLE 3 – Equivalent Feet of Pipe Due to Valve and Fitting Friction
Copper Tube, 0.D.,
Type"L"
1/2 5/8 7/8 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8 3-1/8 3-5/8 4-1/8 5-1/8 6-1/8
Globe Valve (Open)
14 16 22 28 36 42 57 69 83 99 118 138 168
Angle Valve (Open)
7 9 12 15 18 21 28 34 42 49 57 70 83
90° Turn Through Tee
3 4 5 6 8 9 12 14 17 20 22 28 34
Tee (Straight Through)
or Sweep Below
3/4 1 1-1/2 2 2-1/2 3 3-1/2 4 5 6 7 9 11
90° Elbow or Reducing
Tee (Straight Through)
1 2 2 3 4 4 5 7 8 10 12 14 16
Based on 110 F° Liquid Temperature