catalog 717.qxd

Page 6
CATALOG
Thermostatic Expansion Valve Capacities – Tons of Refrigeration
These ratings are based on vapor free 86°F liquid refrigerant entering the TEV, a maximum opening superheat of 7°F, and a
standard factory air test setting.
AC and AL THERMOSTATIC CHARGES
EVAPORATOR
TEMPERATURE ° F
VALVE NOMINAL PORT DISCHARGE
40°
20°
5°
TYPE CAPACITY SIZE TUBE SIZE
PRESSURE DROP ACROSS VALVE – psi
80
100
120
140
100
120
140
160
100
120
140
160
D 1 1/16
1/32
1.08
1.21
1.32
1.43
1.02
1.12
1.21
1.29
0.85
0.93
1.00
1.07
D 2 1/16
1/16
2.16
2.41
2.64
2.86
2.05
2.24
2.42
2.59
1.69
1.85
2.00
2.14
D 5 7/64
5/64
5.40
6.03
6.61
7.14
5.12
5.61
6.05
6.47
4.23
4.63
5.00
5.35
D 10
3/16
7/64
10.
8 12.
1 13.
2 14.
3 10.
2 11.
2 12.
1 12.
9 8.45
9.26
10.
0 10. 7
D 15
3/16
5/32
16.
2 18.
1 19.
8 21.
4 15.
4 16.
8 18.
2 19.
4 12.
7 13.
9 15.
0 16. 0
A 20
5/16
1/
8 19.
3 21.
6 23.
6 25.
5 18.
8 20.
6 22.
2 23.
7 16.
9 18.
5 20.
0 21. 4
A 30
5/16
5/32
28.
9 32.
3 35.
4 38.
2 28.
1 30.
8 33.
3 35.
6 25.
4 27.
8 30.
0 32. 1
A 50
3/
8
3/16
48.
2 53.
9 59.
0 63.
7 46.
9 51.
4 55.
5 59.
3 42.
3 46.
3 50.
0 53. 5
A 75
3 / 8
– 72.
3 80.
8 88.
5 95.
6 70.
4 77.
1 83.
3 89.
0 63.
4 69.
4 75.
0 80. 2
A 100
7 /16
– 96.
4 108
118
127
93.
8 103
111
119
84.
5 92.
6 100
107
AZ and AL THERMOSTATIC CHARGES
EVAPORATOR
TEMPERATURE ° F
VALVE NOMINAL PORT DISCHARGE
- 10°
-20°
TYPE CAPACITY SIZE TUBE SIZE PRESSURE DROP ACROSS VALVE – psi
120
140
160
180
120
140
160
180
D 1 1/16
1/32
0.61
0.66
0.71
0.75
0.52
0.56
0.60
0.63
D 2 1/16
1/16
1.06
1.14
1.22
1.29
0.89
0.96
1.03
1.09
D 5 7/64
5/64
2.48
2.68
2.87
3.04
2.09
2.26
2.42
2.56
D 10
3/16
7/64
5.24
5.66
6.05
6.42
4.42
4.78
5.11
5.42
D 15
3/16
5/32
7.27
7.85
8.39
8.90
6.13
6.62
7.08
7.51
A 20
5/16
1/
8 15.
9 17.
2 18.
4 19.
5 13.
6 14.
7 15.
8 16. 7
A 30
5/16
5/32
23.
9 25.
8 27.
6 29.
3 20.
5 22.
1 23.
6 25. 1
A 50
3/
8
3/16
39.
9 43.
1 46.
0 48.
8 34.
1 36.
9 39.
4 41. 8
A 75
3 / 8
– 59.
8 64.
6 69.
1 73.
2 51.
2 55.
3 59.
1 62. 7
A 100
7 /16
– 79.
7 86.
1 92.
1 97.
7 68.
2 73.
7 78.
8 83. 6
LIQUID TEMPERATURE ENTERING TEV ° F
REFRIGERANT 0 ° 10°
20°
30°
40°
50°
60°
70°
80°
86°
90°
100°
CORRECTION FACTOR, CF LIQUID TEMPERATURE
717
1.27
1.24
1.20
1.17
1.14
1.11
1.08
1.05
1.02
1.00
0.99
0.96
EXAMPLE: Actual capacity of nominal 10 ton valve at -10°F evaporator,
160 psi pressure drop and 60°F liquid temperature = 6.05
tons x 1.08 = 6.53 tons.
These factors include corrections for liquid refrigerant density and net refrigerating effect and are based on an average evaporator temperature
of 0°F. However, they may be used for any evaporator temperature from -20°F to 40°F since the variation in the actual factors
across this range is insignificant.