Data Sheet for Product

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Siemens Modulating refrigerant valves with magnetic actuator‚ PS43 CE2N4721en
Smart Infrastructure 2020-12-21
Sizing
Correct valve sizing (to ensure a sufficiently large pressure drop Dp
v
100 across the
fully open valve) is the key to the correct operation of a refrigeration unit. All the
components must be coordinated, and this can be ensured only by the refrigeration
specialist.
The application examples on pages 5 and 6 show the recommended pressure drop
in each case.
Nominal capacity in kW at evaporation temperature t
0
= 5 °C
Refrigerant
R407C (R22) R134a (R12) R404A / R507
v100
Δp Valve type Condensation temperature tc [°C]
50 40 30 50 40 30 50 40 30
0.5 bar M3FB15LX06/A 4.5 4.0 3.6 3.8 3.3 2.9 3.7 3.3 2.9
M3FB15LX15/A 11 10 8.9 9.5 8.3 7.2 9.2 8.1 7.2
M3FB15LX/A 22 20 18 19 17 14 18 16 14
M3FB20LX/A 37 33 30 32 28 24 31 27 24
M3FB25LX/A 59 53 48 51 44 38 49 43 38
M3FB32LX 89 80 72 76 67 57 74 65 58
1 bar M3FB15LX06/A 6.2 5.6 4.9 5.3 4.6 3.9 5.1 4.5 4.0
M3FB15LX15/A 16 14 12 13 11 10 13 11 10
M3FB15LX/A 31 28 25 26 23 20 26 23 20
M3FB20LX/A 52 46 41 44 38 33 43 38 33
M3FB25LX/A 83 74 66 70 61 52 69 61 53
M3FB32LX 125 111 99 106 92 78 103 91 80
4 bar M3FB15LX06/A 11.4 9.9 8.4 9.2 7.5 5.8 9.6 8.3 7.0
M3FB15LX15/A 28 25 21 23 19 15 24 21 18
M3FB15LX/A 57 50 42 46 38 29 48 41 35
M3FB20LX/A 95 83 70 76 63 48 80 69 58
6 bar M3FB15LX06/A 13 11 8.9 10 7.6 5.8 11 9.4 7.7
M3FB15LX15/A 33 28 22 25 19 15 28 23 19
M3FB15LX/A 65 55 45 50 38 29 55 47 39
M3FB20LX/A 108 92 74 83 63 48 92 78 64
8 bar M3FB15LX06/A 14 11 8.9 9.8 7.6 12 9.9 7.7
M3FB15LX15/A 35 28 22 24 19 30 25 19
M3FB15LX/A 69 56 45 49 38 60 49 39
M3FB20LX/A 115 94 74 81 63 100 82 64
Dp
V100
= Differential pressure across the fully opened valve (control path AB ® A) at a volumetric
flow V
100
Refrigeration capacity
Q
0
Selection table for
approximate valve
size