pdbb0a202

pdbb0a202
Solenoid valves
Type EVR 2 → 40 NC/ NO
REFRIGERATION AND
AIR CONDITIONING
Technical leaflet
Technical leaflet
2
Solenoid valves type EVR 2 → 40 − NC / NO
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Contents
Page
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Liquid capacity Qo kW, R22/ R134a/R404A/R507 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Liquid capacity Qo kW, R407C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Suction vapour capacity Qo kW, R22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Suction vapour capacity Qo kW, R134a/R404A/R507. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Suction vapour capacity Qo kW, R407C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Hot gas capacity Qh kW, R22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Hot gas capacity Qh kW, R134a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Hot gas capacity Qh kW, R404A/R507 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Hot gas capacity Qh kW, R407C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Hot gas capacity Gh kg/s, R22/R134a. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Hot gas capacity Gh kg/s, R404A/R507/R407C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Design/ Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Material specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Dimensions and weight, EVR (NC) 2 → 15 and EVR 6 -> 15 (NO) with fl are connection . . . . . . . . . . . . . . 21
Dimensions and weight, EVR (NC) 2 → 22 and EVR 6 -> 22 (NO) with solder connection . . . . . . . . . . . . . 22
Dimensions and weight, EVR (NC) 25, 32 og 40 with solder connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
© Danfoss A/S, 02 - 2006
DKRCCPDBB0A202-520H1275
3
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Introduction
EVR is a direct or servo operated solenoid
valve for liquid, suction, and hot gas lines with
fluorinated refrigerants.
EVR valves are supplied complete or as separate
components, i.e. valve body, coil and flanges, if
required, can be ordered separately.
Features
• Complete range of solenoid valves for
refrigeration, freezing and air conditioning
plant
• MOPD up to 25 bar with 12 W coil
• Supplied both normally closed (NC) and
normally open (NO) with de-energized coil
• Solder connections up to 2 1/8 in.
• Suitable for all fluorinated refrigerants
• Extended ends for soldering
make installation easy
It is not necessary to dismantle the valve
when soldering in.
• Designed for media temperatures up to
105°C
• EVR are also available with flange
connections
DnV, Det norske Veritas, Norge
Polski Rejestr Statków, Polen
Pressure Equipment Directive (PED) 97/23/EC
MRS, Maritime Register of Shipping, Russia
The Low Voltage Directive (LVD) 73/23/EC with
amendments EN 60730-2-8
Versions with UL approval can be supplied to
order.
Refrigerants
CFC, HCFC, HFC
Ambient temperature and
enclosure for coil
See "Coils for solenoid valves", RD.3J.E2.02
• Wide choice of coils for a.c. and d.c.
Approvals
Technical data
• Flare connections up to 5/8 in.
Temperature of medium
−40 → +105°C with 10 W or 12 W coil.
Max. 130°C during defrosting.
4
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
Solenoid valves type EVR 2 → 40 − NC / NO
Technical leaflet
Technical data
(continued)
Opening differential pressure
with standard coil
Δp bar
Type
Temperature
of medium
Max. working
pressure
PB
kv value 1)
°C
bar
m3/h
0.16
Max. (= MOPD) liquid 2)
Min.
10 W a. c.
12 W a. c.
20 W d. c.
EVR 2
0.0
25
18
−40 → 105
45.2
EVR 3
0.0
21
25
18
−40 → 105
45.2
0.27
EVR 6
0.05
21
25
18
−40 → 105
35
0.8
EVR 6 NO
0.05
21
21
21
−40 →105
35
0.8
EVR 10
0.05
21
25
18
−40 → 105
35
1.9
EVR 10 NO
0.05
21
21
21
−40 → 105
35
1.9
EVR 15
0.05
21
25
18
−40 → 105
32
2.6
EVR 15 NO
0.05
21
21
21
−40 → 105
32
2.6
EVR 20 (a.c.)
0.05
21
25
13
−40 → 105
32
5.0
EVR 20 (d.c.)
0.05
16
−40 → 105
32
5.0
EVR 20 NO
0.05
19
19
19
−40 → 105
32
5.0
EVR 22
0.05
21
25
13
−40 → 105
32
6.0
EVR 22 NO
0.05
19
19
19
−40 → 105
32
6.0
EVR 253)
0.20
21
25
18
−40 → 105
32
10.0
EVR 323)
0.20
21
25
18
−40 → 105
32
16.0
EVR 403)
0.20
21
25
18
−40 → 105
32
25.0
1
) The kv value is the water flow in m3/h at a pressure drop across valve of 1 bar, ρ = 1000 kg/m3.
2) MOPD for media in gas form is approx. 1 bar greater.
3) Min. diff. pressure 0.07 bar is needed to stay open.
Rated capacity
kW
Type
EVR 2
Liquid
Suction vapour
R22
R134a
R404A/R507
R407C
3.20
2.90
2.20
3.01
R22
R134a
R404A/R 507
Hot gas
R407C
R22
R134a
R404A/R507
R407C
1.50
1.20
1.20
1.46
2.43
EVR 3
5.40
5.00
3.80
5.08
2.50
2.00
2.00
EVR 6
16.10
14.80
11.20
15.13
1.80
1.30
1.60
1.66
7.40
5.90
6.00
7.18
EVR 10
38.20
35.30
26.70
35.91
4.30
3.10
3.90
3.96
17.50
13.90
14.30
16.98
EVR 15
52.30
48.30
36.50
49.16
5.90
4.20
5.30
5.43
24.00
19.00
19.60
23.28
EVR 20
101.00
92.80
70.30
94.94
11.40
8.10
10.20
10.49
46.20
36.60
37.70
44.81
EVR 22
121.00
111.00
84.30
113.74
13.70
9.70
12.20
12.60
55.40
43.90
45.20
53.74
EVR 25
201.00
186.00
141.00
188.94
22.80
16.30
20.40
20.98
92.30
73.20
75.30
89.53
EVR 32
322.00
297.00
225.00
302.68
36.50
26.10
32.60
33.58
148.00
117.00
120.00
143.56
EVR 40
503.00
464.00
351.00
472.82
57.00
40.80
51.00
52.44
231.00
183.00
188.00
224.07
Rated liquid and suction vapour capacity is based on
evaporating temperature te = -10°C,
liquid temperature ahead of valve tl = +25°C,
pressure drop in valve Δp = 0.15 bar.
Rated hot gas capacity is based on
condensing temperature tc = +40°C,
pressure drop across valve Δp = 0.8 bar,
hot gas temperature th = +65°C,
and subcooling of refrigerant Δtsub = 4 K.
© Danfoss A/S, 02 - 2006
DKRCCPDBB0A202-520H1275
5
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Ordering
Complete valves
Normally closed (NC) with a.c. coil 1)
Code no.
Valve body + 10 W a. c. coil with 1 m cable
Connection
Type
Flare 2)
in.
Solder ODF
mm
in./mm
in.
mm
EVR 3
1
/4
6
032F8109
032F2042
032F2052
EVR 6
3
/8
10
032F8073
032F2082
032F2092
EVR 10
1
/2
12
032F8091
032F2122
032F2132
EVR 15
5
/8
16
032F8102
032F2192
032F2192
Code no.
Valve body + 10 W a. c. coil with terminal box
Connection
Type
Flare 2)
in.
Solder ODF
mm
in./mm
in.
mm
EVR 3
1
/4
6
032F8110
032F2043
032F2053
EVR 6
3
/8
10
032F8074
032F2083
032F2093
EVR 10
1
/2
12
032F8092
032F2123
032F2133
EVR 15
5
/8
16
032F8103
032F2193
032F2193
EVR 20
7
/8
22
032F2243
032F2243
1
) Please specify code no., voltage and frequency. Voltage and frequency can also be given in the form of an
appendix number, see table "Appendix numbers".
) Supplied without flare nuts.
Separate flare nuts:
1/ in. or 6 mm, code no. 011L1101
4
3/ in. or 10 mm, code no. 011L1135
8
1/ in. or 12 mm, code no. 011L1103
2
5/ in. or 16 mm, code no. 011L1167
8
3) Can only be used with DIN plug
2
Appendix numbers
6
Voltage
V
Frequency
Hz
12
24
42
48
115
220-230
240
380-400
420
24
115
220
240
110
220-230
50
50
50
50
50
50
50
50
50
60
60
60
60
50/60
50/60
Energy consumpt. Appendix no.
W
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
DKRCCPDBB0A202-520H1275
15
16
17
18
22
31
33
37
38
14
20
29
30
21
32
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Ordering (conmtinued)
Separate valve bodies, normally closed (NC)
Code no.
Components
Flare and solder connections
Type
Required
coil type
Flare 1)
in.
EVR 2
a.c.
EVR 10
in./mm
in.
mm
1
6
032F8056
032F1201
032F1202
1
6
032F8107
032F1206
032F1207
3
10
032F8116
032F1204
032F1208
3
10
032F8072
032F1212
032F1213
1
12
032F8079
032F1209
032F1236
1
12
032F8095
032F1217
032F1218
5
16
032F8098
032F1214
032F1214
5
16
032F8101
032F1228
032F1228
5
16
032F8100 2)
7
22
032F1225
032F1225
7
22
032F1240
032F1240
7
/8
22
11/8
28
032F1244
032F1245
7
22
032F1264
032F1264
7
/8
22
13/8
35
032F3267
032F3267
/4
/8
/8
EVR 6
/2
a.c./d.c.
/2
/8
/8
/8
EVR 15
/8
/8
a.c.
EVR 20
d.c.
EVR 22
a.c.
Solder ODF With manual
mm
/4
EVR 3
Valve body without coil
Connection
/8
EVR 32
a.c./d.c.
Without manual
operation
032F1227
032F1254
032F1274
11/8
EVR 25
With manual
operation
032F2200
032F2201
28
032F2205
032F2206
13/8
35
032F2207
032F2208
1 3 /8
35
042H1105
042H1106
042H1103
042H1104
042H1107
042H1108
042H1109
042H1110
15/8
42
1 5 /8
EVR 40
21/8
42
042H1113
042H1114
54
042H1111
042H1112
Separate valve bodies, normally open (NO) 3)
Type
Code no.
Valve body without coil 3)
Connection
Required
coil type
Flare 1)
in.
Solder ODF
mm
in.
mm
in.
mm
EVR 6
3
/8
10
032F8085
032F8085
032F1290
032F1295
EVR 10
1
/2
EVR 15
a.c./d.c.
EVR 20
EVR 22
a.c.
12
032F8091
032F8091
032F1291
032F1296
5
/8
16
032F8099
032F8099
032F1299
032F1299
7
/8
22
032F3270
032F3270
7
/8
22
032F1260
032F1260
11/8
28
032F1269
032F1279
3
35
032F3268
032F3268
1 /8
1
) Valve bodies are supplied without flare nuts.
Separate flare nuts:
1
/4 in. or 6 mm, code no. 011L1101
3
/8 in. or 10 mm, code no. 011L1135
1/ in. or 12 mm, code no. 011L1103
2
5
/8 in. or 16 mm, code no. 011L1167
2
) With manual operation.
3) The normal range of coils can be used for the NO valves, with the exception of the double
frequency versions of 110 V, 50/60 Hz and 220 V, 50/60 Hz.
Coils
See "Coils for solenoid valves", RD.3J.E2.02.
© Danfoss A/S, 02 - 2006
DKRCCPDBB0A202-520H1275
7
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Ordering (continued)
Separate valve bodies, normally closed (NC)
Components
Flare and solder connections
Type
Require coil type
EVR 15
Connection
a.c./d.c.
a.c.
EVR 20
Flanges
d.c.
Code no.
Valve body + gaskets +bolts;
without coil and flanges
Without manual
operation
Without manual
operation
032F1234
032F1224
032F1253
032F1243
032F1273
032F1263
Coils
See "Coils for solenoid valves", RD.3J.E2.02.
Flange sets
Valve type
in.
EVR 15
EVR 20
Code no.
Connection
1
/2
5
/8
3
/4
7
/8
3
/4
7
/8
Solder
mm
in.
Weid
mm
16
027L1117
027L1116
22
027L1123
027L1122
22
027L1223
027L1222
28
027L1229
027L1228
in.
027N1115
+ 1/2 in. weld flange set,
code no. 027N1115
027N1120
+ coil with termfnal box, 220 V, 50 Hz,
code no. 018F6701
(See "Coils for solenoid valves",
RD.3J.E2.02.).
027N1220
1
11/8
Example
EVR 15 without manual operation,
code no. 032F1224
027N1225
Accessories
Description
Code no.
Mounting bracket for EVR 2, 3, 6 and 10
032F0197
Strainer FA for direct mounting
8
DKRCCPDBB0A202-520H1275
See "FA"
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Capacity
Liquid capacity Qe kW
R22
Liquid capacity Qe kW at pressure drop across valve Δp bar
Type
EVR 2
0.1
0.2
0.3
0.4
0.5
2.6
3.7
4.6
5.3
5.9
EVR 3
4.5
6.3
7.7
8.9
9.9
EVR 6
13.1
18.6
22.8
26.3
29.4
EVR 10
31.4
44.1
54.2
62.5
69.9
EVR 15
42.7
60.3
74.1
85.5
95.7
EVR 20
82.2
116.0
143.0
165.0
184.0
EVR 22
99.0
139.0
171.0
197.0
220.0
EVR 25
165.0
232.0
285.0
329.0
368.0
EVR 32
263.0
372.0
455.0
526.0
588.0
EVR 40
411.0
581.0
712.0
822.0
919.0
R134a
Liquid capacity Qe kW
Liquid capacity Qe kW at pressure drop across valve Δp bar
Type
0.1
0.2
0.3
0.4
0.5
EVR 2
2.4
3.4
4.2
4.9
5.4
EVR 3
4.1
5.8
7.1
8.2
9.1
EVR 6
12.1
17.2
21.0
24.3
27.1
EVR 10
28.8
40.7
49.9
57.6
64.4
EVR 15
39.4
55.7
68.3
78.8
88.1
EVR 20
75.8
107.0
131.0
152.0
170.0
EVR 22
90.9
129.0
158.0
182.0
203.0
EVR 25
152.0
214.0
263.0
303.0
339.0
EVR 32
243.0
343.0
420.0
485.0
542.0
EVR 40
379.0
536.0
656.0
758.0
847.0
R404A/R507
Liquid capacity Qe kW
Liquid capacity Qe kW at pressure drop across valve Δp bar
Type
0.1
0.2
0.3
0.4
0.5
EVR 2
1.8
2.6
3.2
3.7
4.1
EVR 3
3.1
4.4
5.4
6.2
6.9
EVR 6
9.2
13.0
15.9
18.4
20.5
EVR 10
21.8
30.8
37.8
43.6
48.8
EVR 15
29.8
42.2
51.7
59.6
66.8
EVR 20
57.4
81.1
99.4
115.0
128.0
EVR 22
68.9
97.4
119.0
138.0
169.0
EVR 25
115.0
162.0
199.0
230.0
257.0
EVR 32
184.0
260.0
318.0
367.0
411.0
EVR 40
287.0
406.0
497.0
574.0
642.0
Capacities are based on
liquid temperature tl = +25°C ahead of valve,
evaporating temperature te = −10°C,
superheat 0 K.
Correction factors
When sizing valves, the plant capacity must be
multiplied by a correction
factor depending on liquid temperature
tl ahead of valve/evaporator.
When the corrected capacity is known, the
selection can be made from the table.
Correction factors for liquid temperature tl
© Danfoss A/S, 02 - 2006
tl°C
−10
0
10
15
20
25
30
35
40
45
50
R22
0.76
0.82
0.88
0.92
0.96
1.0
1.05
1.10
1.16
1.22
1.30
R134a
0.73
0.79
0.86
0.90
0.95
1.0
1.06
1.12
1.19
1.27
1.37
R404A/R507
0.65
0.72
0.81
0.86
0.93
1.0
1.09
1.20
1.33
1.51
1.74
DKRCCPDBB0A202-520H1275
9
Technical leaflet
Capacity
(continued)
Solenoid valves type EVR 2 → 40 − NC / NO
R407C
Liquid capacity Qe kW
Liquid capacity Qe kW at pressure drop across valve Δp bar
Type
0.1
0.2
0.3
0.4
0.5
EVR 2
2.4
3.4
4.3
5.0
5.3
EVR 3
4.2
5.9
7.2
8.4
9.3
EVR 6
12.3
17.5
21.4
24.7
27.6
EVR 10
29.5
41.5
50.9
58.7
65.7
EVR 15
40.1
56.7
69.7
80.4
90.0
EVR 20
77.0
109.0
134.0
155.0
172.0
EVR 22
93.1
130.0
161.0
185.2
207.0
EVR 25
155.0
218.0
268.0
309.0
346.0
EVR 32
247.0
350.0
428.0
494.0
553.0
EVR 40
386.0
546.0
669.0
773.0
864.0
Correction factors
When sizing valves, the plant capacity must be
multiplied by a correction
factor depending on liquid temperature
tl ahead of valve/evaporator.
When the corrected capacity is known, the
selection can be made from the table.
Capacities are based on liquid temperature
tl = +25°C ahead of valve, evaporating
temperature te = −10°C, and superheat 0 K.
Correction factors based on liquid temperature tl
tl°C
−10
0
10
15
20
25
30
35
40
45
50
R407C
0.71
0.78
0.85
0.89
0.94
1.0
1.06
1.14
1.23
1.33
1.46
R22
Suction vapour capacity Qe
Capacities are based on liquid
temperature tl = +25°C ahead of
evaporator.
The table values refer to the evaporator
capacity and are given as a function
of evaporating temperature te and
pressure drop Δp across valve.
Capacities are based on dry, saturated
vapour ahead of valve.
During operation with superheated
vapour ahead of valve, the capacities
are reduced by 4% for each 10 K
superheat.
Suction vapour capacity Qe kW at evaporating temperature te °C
Type
Pressure drop
Δp bar
–40
–30
–20
–10
0
EVR 6
0.1
0.15
0.2
0.73
0.87
0.98
0.94
1.1
1.3
1.2
1.4
1.6
1.5
1.8
2.0
1.8
2.2
2.5
2.1
2.6
3.0
EVR 10
0.1
0.15
0.2
1.7
2.1
2.3
2.2
2.7
3.1
2.9
3.4
3.9
3.5
4.3
4.8
4.3
5.2
6.0
5.1
6.2
7.1
EVR 15
0.1
0.15
0.2
2.3
2.8
3.2
3.1
3.7
4.2
4.0
4.7
5.3
4.8
5.9
6.6
5.8
7.1
8.2
6.9
8.5
9.8
EVR 20
0.1
0.15
0.2
4.6
5.4
6.1
5.9
7.1
8.1
7.6
9.1
10.3
9.3
11.4
12.7
11.2
13.9
15.9
13.3
16.7
18.8
EVR 22
0.1
0.15
0.2
5.5
6.5
7.3
7.1
8.5
9.7
9.1
10.7
12.3
11.2
13.7
15.2
13.4
16.4
19.0
16.0
20.0
22.6
EVR 25
0.1
0.15
0.2
9.1
10.9
12.2
11.8
14.2
16.1
15.2
17.9
20.4
18.6
22.8
25.3
22.4
27.4
31.7
26.6
32.6
37.6
EVR 32
0.1
0.15
0.2
14.6
17.4
19.6
18.9
22.7
25.7
24.3
28.8
32.6
29.8
36.5
40.5
35.8
43.8
50.7
42.6
52.2
60.2
EVR 40
0.1
0.15
0.2
22.8
27.2
30.5
29.5
35.4
40.2
38.1
45.0
51.0
46.5
57.0
63.3
56.0
68.6
79.2
66.5
81.5
94.0
+10
Correction factors
When sizing valves, the evaporator capacity must
be divided by a correction factor depending on
liquid temperature tl ahead of expansion valve.
When the corrected capacity is known, the
selection can be made from the table.
Correction factors for liquid temperature tl
10
tl°C
−10
0
10
15
20
25
30
35
40
45
50
R22
0.76
0.82
0.88
0.92
0.96
1.0
1.05
1.10
1.16
1.22
1.30
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Capacity
(continued)
Suction vapour capacity Qe
R134a
Suction vapour capacity Qe kW at evaporating temperature te °C
Type
Pressure drop
across valve Δp bar
–40
–30
–20
–10
0
+10
EVR 6
0.1
0.15
0.2
0.73
0.87
0.98
0.46
0.53
0.58
0.84
1.0
1.1
1.1
1.3
1.5
1.4
1.7
1.9
1.7
2.0
2.4
EVR 10
0.1
0.15
0.2
1.7
2.1
2.3
1.1
1.3
1.4
2.0
2.4
2.7
2.6
3.1
3.5
3.3
4.0
4.5
4.0
4.9
5.7
EVR 15
0.1
0.15
0.2
2.3
2.8
3.2
1.5
1.7
1.9
2.7
3.3
3.7
3.6
4.2
4.8
4.5
5.5
6.1
5.5
6.7
7.8
EVR 20
0.1
0.15
0.2
4.6
5.4
6.1
2.9
3.3
3.7
5.3
6.3
7.1
7.0
8.1
9.3
8.6
10.6
11.7
10.6
13.0
15.0
EVR 22
0.1
0.15
0.2
5.5
6.5
7.3
3.4
4.0
4.4
6.3
7.5
8.5
8.3
9.7
11.1
10.3
12.7
14.0
12.7
15.5
17.9
EVR 25
0.1
0.15
0.2
9.1
10.9
12.2
5.8
6.6
7.3
10.5
12.5
14.1
13.9
16.3
18.5
17.2
21.1
23.4
21.1
25.9
29.9
EVR 32
0.1
0.15
0.2
14.6
17.4
19.6
9.3
10.6
11.7
16.8
20.0
22.6
22.2
26.1
29.6
27.7
33.8
37.4
33.8
41.4
47.4
EVR 40
0.1
0.15
0.2
22.8
27.2
30.5
14.5
16.5
18.3
26.3
31.3
35.3
34.8
40.8
46.3
43.3
52.8
58.5
52.8
64.8
74.8
R404A/R507
Suction vapour capacity Qe kW
Capacities are based on liquid
temperature tl = +25°C ahead
of evaporator.
The table values refer to the
evaporator capacity and
are given as a function of
evaporating temperature te and
pressure drop Δp across valve.
Capacities are based on dry,
saturated vapour ahead of
valve.
During operation with
superheated vapour ahead
of valve, the capacities are
reduced by 4% for each 10 K
superheat.
Suction vapour capacity Qe kW at evaporating temperature te °C
Type
Pressure drop
across valve Δp bar
–40
–30
–20
–10
0
+10
EVR 6
0.1
0.15
0.2
0.62
0.73
0.82
0.8
0.97
1.1
1.1
1.3
1.4
1.3
1.6
1.8
1.6
2.0
2.3
2.0
2.4
2.8
EVR 10
0.1
0.15
0.2
1.5
1.7
2.0
1.9
2.3
2.6
2.5
3.0
3.4
3.2
3.9
4.3
3.9
4.8
5.5
4.7
5.8
6.7
EVR 15
0.1
0.15
0.2
2.0
2.4
2.7
2.6
3.2
3.6
3.5
4.1
4.7
4.3
5.3
5.9
5.3
6.5
7.5
6.4
7.9
9.1
EVR 20
0.1
0.15
0.2
3.9
4.6
5.2
5.0
6.1
6.9
6.7
7.9
9.0
8.3
10.2
11.4
10.2
12.5
14.4
12.3
15.2
17.5
EVR 22
0.1
0.15
0.2
4.6
5.5
6.2
6.0
7.3
8.3
8.0
9.5
10.8
10.0
12.2
13.6
12.2
15.0
17.3
14.8
18.2
21.0
EVR 25
0.1
0.15
0.2
7.7
9.1
10.3
10.1
12.1
13.8
13.3
15.8
18.0
16.6
20.4
22.7
20.4
25.0
28.8
24.6
30.3
35.0
EVR 32
0.1
0.15
0.2
12.3
14.6
16.5
16.2
19.4
22.0
21.3
25.3
28.8
26.6
32.6
36.3
32.6
40.0
46.1
39.4
48.5
56.0
EVR 40
0.1
0.15
0.2
19.3
22.8
25.8
25.3
30.3
34.5
33.3
39.5
45.0
41.5
51.0
56.8
51.0
62.5
72.1
61.5
75.6
87.5
Correction factors
When sizing valves, the plant capacity must be
multiplied by a correction
factor depending on liquid temperature
tl ahead of valve/evaporator.
When the corrected capacity is known, the
selection can be made from the table.
Correction factors based on liquid temperature tl
© Danfoss A/S, 02 - 2006
tl°C
−10
0
10
15
20
25
30
35
40
45
50
R134a
0.73
0.79
0.86
0.90
0.95
1.0
1.06
1.12
1.19
1.27
1.37
R404A/R507
0.65
0.72
0.81
0.86
0.93
1.0
1.09
1.20
1.33
1.51
1.74
DKRCCPDBB0A202-520H1275
11
Technical leaflet
Capacity
(continued)
Capacities are based on liquid
temperature tl = +25°C ahead of
evaporator.
The table values refer to the
evaporator capacity and are given
as a function of evaporating
temperature te and pressure drop Δp
across valve.
Capacities are based on dry,
saturated vapour ahead of valve.
During operation with superheated
vapour ahead of valve, the capacities
are reduced by 4% for each 10 K
superheat.
Solenoid valves type EVR 2 → 40 − NC / NO
R407C
Suction vapour capacity Qe kW at evaporating temperature te °C
Type
Pressure drop
across valve Δp bar
–40
–30
–20
–10
0
+10
EVR 6
0.1
0.15
0.2
0.61
0.72
0.81
0.81
0.95
1.1
1.1
1.3
1.4
1.4
1.7
1.8
1.7
2.1
2.4
2.0
2.5
2.9
EVR 10
0.1
0.15
0.2
1.4
1.7
1.9
1.9
2.3
2.7
2.6
3.0
3.5
3.2
4.0
4.4
4.0
4.9
5.6
4.9
6.0
6.9
EVR 15
0.1
0.15
0.2
1.9
2.3
2.7
2.7
3.2
3.6
3.6
4.2
4.7
4.4
5.4
6.1
5.5
6.7
7.7
6.7
8.2
9.5
EVR 20
0.1
0.15
0.2
3.8
4.5
5.1
5.1
6.1
7.0
6.8
8.1
9.2
8.6
10.5
11.7
10.5
13.1
14.9
12.9
16.2
18.2
EVR 22
0.1
0.15
0.2
4.6
5.4
6.1
6.1
7.3
8.3
8.1
9.5
11.0
10.3
12.6
14.0
12.6
15.4
17.9
15.5
19.4
21.9
EVR 25
0.1
0.15
0.2
7.6
9.1
10.1
10.2
12.2
13.9
13.5
15.9
18.2
17.1
21.0
23.3
21.1
25.8
29.8
25.8
31.6
36.5
EVR 32
0.1
0.15
0.2
12.1
14.4
16.3
16.3
19.5
22.1
21.6
25.6
29.0
27.4
33.6
37.3
33.7
41.2
47.7
41.3
50.6
58.4
EVR 40
0.1
0.15
0.2
18.9
22.6
25.3
25.4
30.4
34.6
33.9
40.1
45.4
42.8
52.4
58.2
52.6
64.5
74.4
64.5
79.1
91.2
Correction factors
When sizing valves, the evaporator capacity
must be multiplied by a correction factor depending on liquid temperature
tl ahead of expansion valve. When the corrected capacity is known, the
selection can be made from the table.
Correction factors based on liquid temperature tl
tl°C
−10
0
10
15
20
25
30
35
40
45
50
R407C
0.71
0.78
0.85
0.89
0.94
1.0
1.06
1.14
1.23
1.33
1.46
Hot gas defrosting
With hot gas defrosting it is not normally possible
to select a valve from condensing temperature tc
and evaporating temperature te.
This is because the pressure in the evaporator
as a rule quickly rises to a value near that of the
condensing pressure. It remains at this value
until the defrosting is finished.
In most cases therefore, the valve will be selected
from condensing temperature tc and pressure
drop Δp across the valve, as shown in the
example for heat recovery.
Heat recovery
The following is given:
Refrigerant = R22
Evaporating temperature te = – 30°C
Condensing temperature tc = + 40°C
Hot gas temperature ahead of valve th = + 85°C
Heat recovery condenser yield Qh = 8 kW
The capacity table for 22 with tc = + 40°C gives
the the capacity for an EVR 10 as 8.9 kW, when
pressure drop Δp is 0.2 bar.
The correction factor for te = – 30°C is given in the
table as 0.94.
The correction for hot gas temperature
th = + 85°C has been calculated as 4% which
corresponds to a factor of 1.04.
Qh must be corrected with factors found:
With Δp = 0.2 bar is
Qh = 8.9 x 0.94 x 1.04 = 8.7 kW.
With Δp = 0.1 bar, Qh becomes only
6.3 x 0.94 x 1.04 = 6.2 kW.
An EVR 6 would also be able to give the required
capacity, but with Δp at approx. 1 bar.
The EVR 6 is therefore too small.
The EVR is so large that it is doubtful whether the
necessary Δp of apprx. 0.1 bar could be obtained.
An EVR 15 would therefore be too large.
Result: An EVR 10 is the correct valve for the
given conditions.
12
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Capacity
(continued)
Hot gas capacity Qh kW
R22
Hot gas capacity Qh kW
Pressure drop
across valve
Δp bar
Type
Evaporating temp. te=-10°C. Hot gas temp. th=tc +25°C. Subcooling Δtsub =4 K
Condensing temperature tc °C
+20
+40
+50
+60
EVR 2
0.1
0.2
0.4
0.8
1.6
0.47
0.67
0.96
1.32
1.87
0.50
0.71
1.02
1.37
1.99
0.53
0.75
1.07
1.48
2.08
0.54
0.77
1.10
1.57
2.16
0.55
0.78
1.11
1.59
2.19
EVR 3
0.1
0.2
0.4
0.8
1.6
0.80
1.14
1.63
2.23
3.15
0.85
1.20
1.72
2.31
3.35
0.89
1.26
1.80
2.49
3.52
0.92
1.30
1.85
2.65
3.64
0.93
1.32
1.87
2.68
3.69
EVR 6
0.1
0.2
0.4
0.8
1.6
2.4
3.4
4.8
6.6
9.3
2.5
3.6
5.1
6.8
9.9
2.6
3.7
5.3
7.4
10.4
2.7
3.4
5.5
7.9
10.8
2.8
3.9
5.6
7.9
10.9
EVR 10
0.1
0.2
0.4
0.8
1.6
5.6
8.0
11.4
15.7
22.2
6.0
8.5
12.1
16.2
23.6
6.3
8.9
12.7
17.5
24.8
6.5
9.2
13.0
18.7
25.6
6.5
9.3
13.2
18.9
26.0
EVR 15
0.1
0.2
0.4
0.8
1.6
7.7
11.0
15.7
21.5
30.3
8.2
11.6
16.6
22.2
32.3
8.6
12.1
17.3
24.0
33.9
8.8
12.5
17.8
25.5
35.0
8.9
12.7
18.0
25.9
35.5
EVR 20
0.1
0.2
0.4
0.8
1.6
14.8
21.1
30.0
41.3
58.3
15.7
22.3
31.9
42.7
62.1
16.5
23.4
33.3
46.2
65.2
17.0
24.1
34.3
49.1
67.4
17.2
24.4
34.7
49.6
68.4
EVR 22
0.1
0.2
0.4
0.8
1.6
17.8
25.3
36.1
49.5
70.0
18.8
26.8
38.3
51.2
74.5
19.7
28.0
40.0
55.4
78.2
20.4
28.9
41.2
58.9
80.8
20.6
29.3
41.6
59.5
82.0
EVR 25
0.1
0.2
0.4
0.8
1.6
29.6
42.1
60.2
82.5
117.0
31.4
44.6
63.8
87.9
124.0
32.9
46.7
66.6
92.3
130.0
34.0
48.2
68.6
98.2
135.0
34.4
48.8
69.4
99.2
137.0
EVR 32
0.1
0.2
0.4
0.8
1.6
47.4
67.4
96.3
132.0
187.0
50.2
71.4
102.0
140.0
199.0
52.6
74.7
107.0
148.0
209.0
54.4
77.1
110.0
157.0
216.0
55.0
78.1
111.0
159.0
219.0
EVR 40
0.1
0.2
0.4
0.8
1.6
74.0
105.0
151.0
206.0
291.0
78.5
112.0
159.0
222.0
310.0
82.3
117.0
167.0
231.0
326.0
85.0
121.0
172.0
246.0
337.0
86.0
122.0
174.0
248.0
342.0
An increase in hot gas temperature
th of 10 K, based on th = tc +25°C,
reduces valve capacity approx. 2%
and vice versa.
A change in evaporating temperature
te changes valve capacity; see
correction factor table below.
+30
Correction factors
When sizing valves, the table value must be
multiplied by a correction factor depending on
evaporating temperature te.
Correction factors for evaporating temperatur te
© Danfoss A/S, 02 - 2006
te °C
−40
−30
−20
−10
0
+10
R22
0.90
0.94
0.97
1.0
1.03
1.05
DKRCCPDBB0A202-520H1275
13
Technical leaflet
Capacity
(continued)
Solenoid valves type EVR 2 → 40 − NC / NO
R134a
Hot gas capacity Qh kW
Hot gas capacity Qh kW
Pressure drop
across valve
Δp bar
Type
Evaporating temp. te=-10°C. Hot gas temp. th=tc +25°C. Subcooling Δtsub =4 Kv
Condensing temperature tc °C
+20
+40
+50
+60
EVR 2
0.1
0.2
0.4
0.8
1.6
0.38
0.54
0.74
1.06
1.50
0.40
0.57
0.82
1.13
1.61
0.41
0.59
0.84
1.17
1.67
0.42
0.60
0.86
1.23
1.70
0.42
0.59
0.85
1.22
1.69
EVR 3
0.1
0.2
0.4
0.8
1.6
0.64
0.91
1.26
1.79
2.57
0.67
0.96
1.38
1.90
2.72
0.70
0.99
1.42
1.98
2.82
0.71
1.01
1.44
2.08
2.88
0.71
1.00
1.43
2.05
2.86
EVR 6
0.1
0.2
0.4
0.8
1.6
1.88
2.69
3.73
5.29
7.61
1.99
2.84
4.08
5.62
8.05
2.07
2.95
4.22
5.86
8.37
2.11
3.00
4.28
6.16
8.52
2.09
2.97
4.23
6.08
8.46
EVR 10
0.1
0.2
0.4
0.8
1.6
4.5
6.4
8.9
12.6
18.1
4.7
6.8
9.7
13.3
19.1
4.9
7.0
10.0
13.9
19.9
5.0
7.1
10.2
14.6
20.2
5.0
7.1
10.1
14.4
20.1
EVR 15
0.1
0.2
0.4
0.8
1.6
6.1
8.7
12.1
17.2
24.8
6.5
9.2
13.3
18.3
26.2
6.7
9.6
13.7
19.0
27.2
6.7
9.7
13.9
20.0
27.7
6.8
9.7
13.8
19.8
27.5
EVR 20
0.1
0.2
0.4
0.8
1.6
11.8
16.8
23.4
33.1
47.6
12.5
17.8
25.5
35.1
50.3
13.0
18.4
26.4
36.6
52.3
13.2
18.7
26.7
38.5
53.3
13.1
18.6
26.5
38.0
52.9
EVR 22
0.1
0.2
0.4
0.8
1.6
14.1
20.2
28.0
39.7
57.1
15.0
21.3
30.6
42.2
60.4
15.5
22.1
31.6
43.9
62.8
15.8
22.6
32.1
46.2
63.9
15.7
22.3
31.7
45.6
63.5
EVR 25
0.1
0.2
0.4
0.8
1.6
23.6
33.6
46.6
66.2
95.2
24.9
35.5
51.0
70.2
101.0
25.9
36.8
52.7
73.2
105.0
26.4
37.4
53.4
77.0
107.0
26.2
37.1
52.9
76.0
106.0
EVR 32
0.1
0.2
0.4
0.8
1.6
37.6
53.8
74.7
106.0
152.0
39.8
56.8
81.6
112.0
161.0
41.4
58.9
84.3
117.0
167.0
42.1
59.8
85.4
123.0
170.0
41.8
59.4
84.6
122.0
169.0
EVR 40
0.1
0.2
0.4
0.8
1.6
58.8
84.1
117.0
166.0
238.0
62.3
88.8
127.0
176.0
252.0
64.7
92.1
132.0
183.0
262.0
65.8
93.5
134.0
192.0
266.0
65.3
92.8
132.0
190.0
265.0
An increase in hot gas temperature
th of 10 K, based on th = tc +25°C,
reduces valve capacity approx. 2%
and vice versa.
A change in evaporating temperature
te changes valve capacity; see
correction factor table below.
+30
Correction factors
When sizing valves, the table value must be
multiplied by a correction factor depending on
evaporating temperature te.
Correction factors for evaporating temperatur te
14
te °C
−40
−30
−20
−10
0
+10
R134A
0.88
0.92
0.98
1.0
1.04
1.08
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Capacity
(continued)
Hot gas capacity Qh kW
R404A/R507
Hot gas capacity Qh kW
Type
Pressure drop
across valve
Δp bar
Evaporating temp. te=-10°C. Hot gas temp. th=tc +25°C. Subcooling Δtsub =4 K
Condensing temperature tc °C
+20
+40
+50
+60
EVR 2
0.1
0.2
0.4
0.8
1.6
0.43
0.61
0.87
1.19
1.68
0.44
0.62
0.87
1.21
1.70
0.43
0.61
0.87
1.21
1.69
0.40
0.58
0.82
1.19
1.62
0.37
0.53
0.75
1.07
1.48
EVR 3
0.1
0.2
0.4
0.8
1.6
0.73
1.03
1.46
2.01
2.83
0.74
1.04
1.48
2.04
2.87
0.73
1.03
1.47
2.03
2.84
0.69
0.98
1.39
2.00
2.74
0.63
0.89
1.27
1.81
2.50
EVR 6
0.1
0.2
0.4
0.8
1.6
2.16
3.03
4.34
5.94
8.37
2.18
3.08
4.38
6.05
8.52
2.15
3.05
4.35
6.02
8.43
2.05
2.90
4.13
5.92
8.10
1.86
2.64
3.76
5.37
7.40
EVR 10
0.1
0.2
0.4
0.8
1.6
5.1
7.2
10.3
14.1
19.9
5.2
7.3
10.4
14.4
20.3
5.1
7.3
10.3
14.3
20.0
4.9
6.9
9.8
14.1
19.2
4.4
6.3
8.9
12.8
17.6
EVR 15
0.1
0.2
0.4
0.8
1.6
7.0
9.9
14.1
19.3
27.2
7.1
10.0
14.3
19.7
27.7
7.0
9.9
14.2
19.6
27.6
6.7
9.4
13.4
19.2
26.3
6.1
8.6
12.2
17.5
24.1
EVR 20
0.1
0.2
0.4
0.8
1.6
13.4
18.9
27.1
37.1
52.4
13.7
19.2
27.4
37.8
53.3
13.5
19.1
27.2
37.7
52.6
12.8
18.2
25.8
37.0
50.6
11.6
16.5
23.5
33.6
46.2
EVR 22
0.1
0.2
0.4
0.8
1.6
16.1
22.7
32.5
44.5
62.8
16.4
23.1
32.9
45.4
64.0
16.1
22.9
32.7
45.2
63.2
15.4
21.8
31.0
44.4
60.8
14.0
19.8
28.2
40.3
55.5
EVR 25
0.1
0.2
0.4
0.8
1.6
26.8
37.9
54.2
74.2
105.0
27.4
38.4
54.9
75.6
107.0
26.9
38.2
54.5
75.3
105.0
25.6
36.3
51.7
74.0
101.0
23.3
33.0
47.0
67.2
92.5
EVR 32
0.1
0.2
0.4
0.8
1.6
43.0
60.6
86.7
119.0
167.0
43.8
61.4
87.8
121.0
171.0
43.0
61.1
87.2
120.0
168.0
40.9
58.1
82.7
118.0
162.0
37.3
52.8
75.2
107.0
148.0
EVR 40
0.1
0.2
0.4
0.8
1.6
67.0
94.8
136.0
186.0
262.0
68.5
96.0
137.0
189.0
266.0
67.3
95.5
136.0
188.0
263.0
64.0
90.8
129.0
185.0
253.0
58.3
82.5
117.0
168.0
231.0
An increase in hot gas temperature
th of 10 K, based on th = tc +25°C,
reduces valve capacity approx. 2%
and vice versa.
A change in evaporating temperature
te changes valve capacity; see
correction factor table below.
+30
Correction factors
When sizing valves, the table value must be
multiplied by a correction factor depending on
evaporating temperature te.
Correction factors for evaporating temperatur te
© Danfoss A/S, 02 - 2006
te °C
−40
−30
−20
−10
0
+10
R440A/R507
0.86
0.88
0.93
1.0
1.03
1.07
DKRCCPDBB0A202-520H1275
15
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Capacity
(continued)
Hot gas capacity Qh kW
Pressure drop
across valve
Δp bar
Type
Evaporating temp. te=-10°C. Hot gas temp. th=tc +25°C. Subcooling Δtsub =4 K
Condensing temperature tc °C
+20
+30
+40
+50
+60
EVR 2
0.1
0.2
0.4
0.8
1.6
0.53
0.75
1.08
1.48
2.09
0.55
0.78
1.12
1.51
2.19
0.57
0.80
1.14
1.58
2.23
0.56
0.80
1.14
1.63
2.25
0.54
0.76
1.09
1.56
2.15
EVR 3
0.1
0.2
0.4
0.8
1.6
0.9
1.28
1.83
2.50
3.53
0.94
1.32
1.89
2.54
3.69
0.95
1.35
1.93
2.66
3.77
0.96
1.35
1.92
2.76
3.79
0.91
1.29
1.83
2.63
3.62
EVR 6
0.1
0.2
0.4
0.8
1.6
2.7
3.8
5.4
7.4
10.4
2.8
4.0
5.6
7.5
10.9
2.8
4.0
5.7
7.9
11.1
2.8
3.5
5.7
8.2
11.2
2.7
3.8
5.5
7.7
10.7
EVR 10
0.1
0.2
0.4
0.8
1.6
6.3
9.0
12.8
17.6
24.9
6.6
9.4
13.3
17.8
26.0
6.7
9.5
13.6
18.7
26.5
6.8
9.6
13.5
19.4
26.6
6.4
9.1
12.9
18.5
25.5
EVR 15
0.1
0.2
0.4
0.8
1.6
8.6
12.3
17.6
24.1
33.9
9.0
12.8
18.3
24.4
35.5
9.2
12.9
18.5
25.7
36.3
9.2
13
18.5
26.5
36.4
8.7
12.4
17.6
25.4
34.8
EVR 20
0.1
0.2
0.4
0.8
1.6
16.6
23.6
33.6
46.3
65.3
17.3
24.5
35.1
47
68.3
17.7
25.0
35.6
49.4
69.8
17.7
25.1
35.7
51.1
70.1
16.9
23.9
34.0
48.6
67.0
EVR 22
0.1
0.2
0.4
0.8
1.6
19.9
28.3
40.4
55.4
78.4
20.7
29.5
42.1
56.3
82.0
21.1
30.0
42.8
59.3
83.7
21.2
30.1
42.8
61.3
84
20.2
28.7
40.8
58.3
80.4
EVR 25
0.1
0.2
0.4
0.8
1.6
33.2
47.2
67.4
92.4
131.0
34.5
49.1
70.2
96.7
136.4
35.2
50.0
71.3
98.8
139.1
35.4
50.1
71.3
102.1
140.4
33.7
47.8
68.0
97.2
134.3
EVR 32
0.1
0.2
0.4
0.8
1.6
53.1
75.5
107.9
147.8
209.4
55.2
78.5
112.2
154.0
218.9
56.3
79.9
114.5
158.4
223.6
56.6
80.2
114.4
163.3
224.6
53.9
76.5
108.8
155.8
214.6
EVR 40
0.1
0.2
0.4
0.8
1.6
82.9
117.6
169.1
230.7
325.9
86.4
123.2
174.9
244.2
341.0
88.1
125.2
178.7
247.2
348.8
88.4
125.8
178.9
255.8
350.5
84.3
119.6
170.5
243.0
335.2
An increase in hot gas temperature
th of 10 K, based on th = tc +25°C,
reduces valve capacity approx. 2%
and vice versa.
A change in evaporating temperature
te changes valve capacity; see
correction factor table below.
R407C
Hot gas capacity Qh kW
Correction factors
When sizing valves, the table value must be
multiplied by a correction factor depending on
evaporating temperature te.
Correction factors for evaporating temperatur te
16
te °C
−40
−30
−20
−10
0
+10
R407C
0.90
0.94
0.97
1.0
1.03
1.05
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Capacity
(continued)
Hot gas capacity Gh kg/s
Hot gas
temperature
th °C
R 22
Hot gas capacity Gh kg/s at pressure drop across valve Δp bar
Condensing
temperature
tc °C
0.5
1
2
3
4
5
6
7
8
EVR 2
+25
+35
+45
0.005
0.006
0.007
0.007
0.009
0.01
0.01
0.011
0.013
0.011
0.013
0.016
0.012
0.014
0.017
0.012
0.015
0.018
0.012
0.015
0.019
0.012
0.015
0.019
0.012
0.015
0.02
EVR 3
+25
+35
+45
0.009
0.01
0.012
0.012
0.014
0.016
0.016
0.019
0.022
0.019
0.022
0.026
0.02
0.024
0.029
0.02
0.025
0.031
0.02
0.026
0.032
0.02
0.026
0.033
0.02
0.026
0.033
EVR 6
+25
+35
+45
0.027
0.031
0.035
0.037
0.043
0.049
0.049
0.057
0.066
0.055
0.067
0.078
0.058
0.072
0.086
0.059
0.075
0.092
0.059
0.077
0.095
0.059
0.077
0.097
0.059
0.077
0.098
EVR 10
+25
+35
+45
0.064
0.074
0.084
0.088
0.102
0.116
0.116
0.137
0.158
0.131
0.158
0.185
0.139
0.172
0.205
0.14
0.179
0.218
0.14
0.182
0.227
0.14
0.182
0.231
0.14
0.182
0.232
EVR 15
+25
+35
+45
0.084
0.097
0.11
0.116
0.134
0.153
0.153
0.18
0.208
0.173
0.208
0.244
0.182
0.226
0.269
0.184
0.236
0.287
0.184
0.239
0.298
0.184
0.239
0.304
0.184
0.239
0.305
EVR 20
+25
+35
+45
0.169
0.194
0.22
0.231
0.267
0.305
0.305
0.359
0.415
0.346
0.416
0.488
0.365
0.452
0.539
0.368
0.472
0.574
0.368
0.478
0.597
0.368
0.478
0.608
0.368
0.478
0.611
EVR 22
+25
+35
+45
0.203
0.279
0.264
0.277
0.32
0.366
0.366
0.431
0.498
0.415
0.499
0.586
0.438
0.542
0.647
0.442
0.566
0.689
0.442
0.574
0.716
0.442
0.574
0.722
0.442
0.574
0.733
EVR 25
+25
+35
+45
0.331
0.38
0.431
0.453
0.524
0.598
0.599
0.704
0.814
0.677
0.816
0.956
0.715
0.886
1.056
0.722
0.925
1.125
0.722
0.938
1.169
0.722
0.938
1.192
0.722
0.938
1.197
EVR 32
+25
+35
+45
0.539
0.619
0.704
0.739
0.856
0.978
0.976
1.15
1.329
1.106
1.331
1.562
1.168
1.446
1.723
1.179
1.509
1.837
1.531
1.909
1.947
1.955
EVR 40
+25
+35
+45
0.843
0.968
1.1
1.155
1.338
1.528
1.525
1.798
2.078
1.728
2.08
2.44
1.825
2.26
2.693
1.843
2.358
2.87
2.393
2.983
3.043
3.055
Type
+90
R134a
Hot gas
temperature
th °C
0.5
1
2
3
4
5
6
7
8
EVR 2
+25
+35
+45
0.005
0.006
0.007
0.007
0.008
0.009
0.008
0.01
0.012
0.008
0.011
0.014
0.008
0.012
0.015
0.012
0.015
0.012
0.015
0.015
0.015
EVR 3
+25
+35
+45
0.008
0.009
0.01
0.011
0.013
0.016
0.011
0.016
0.02
0.014
0.018
0.023
0.014
0.018
0.025
0.018
0.025
0.018
0.025
0.025
0.025
EVR 6
+25
+35
+45
0.024
0.028
0.032
0.032
0.038
0.045
0.04
0.049
0.059
0.041
0.055
0.068
0.041
0.056
0.072
0.056
0.073
0.056
0.073
0.073
0.073
EVR 10
+25
+35
+45
0.057
0.066
0.076
0.075
0.09
0.107
0.094
0.117
0.141
0.098
0.13
0.161
0.098
0.132
0.17
0.132
0.172
0.132
0.172
0.172
0.172
EVR 15
+25
+35
+45
0.074
0.087
0.1
0.1
0.119
0.14
0.124
0.154
0.185
0.129
0.171
0.212
0.129
0.167
0.223
0.167
0.225
0.167
0.225
0.225
0.225
EVR 20
+25
+35
+45
0.149
0.174
0.2
0.199
0.238
0.28
0.247
0.307
0.37
0.258
0.341
0.423
0.258
0.347
0.447
0.347
0.452
0.347
0.452
0.452
0.452
EVR 22
+25
+35
+45
0.179
0.209
0.24
0.239
0.286
0.336
0.296
0.368
0.444
0.31
0.409
0.508
0.31
0.416
0.536
0.416
0.542
0.416
0.542
0.542
0.542
EVR 25
+25
+35
+45
0.292
0.341
0.393
0.391
0.467
0.549
0.486
0.602
0.725
0.506
0.668
0.83
0.506
0.679
0.876
0.679
0.885
0.679
0.885
0.885
0.885
EVR 32
+25
+35
+45
0.478
0.556
0.641
0.638
0.763
0.897
0.793
0.994
1.197
0.826
1.091
1.354
0.826
1.108
1.432
1.108
1.446
1.108
1.446
1.446
1.446
EVR 40
+25
+35
+45
0.747
0.87
1.002
0.998
1.192
1.402
1.24
1.553
1.87
1.291
1.704
2.117
1.291
1.731
2.237
1.731
2.259
1.731
2.259
2.259
Type
+60
An increase in hot gas temperature
th of 10 K reduces valve capacity
approx. 2% and vice versa.
© Danfoss A/S, 02 - 2006
Hot gas capacity Gh kg/s at pressure drop across valve Δp bar
Condensing
temperature
tc °C
DKRCCPDBB0A202-520H1275
17
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Capacity
(continued)
Hot gas capacity Gh kg/s
Hot gas
temperature
th °C
R404A/R507
Hot gas capacity Gh kg/s at pressure drop across valve Δp bar
Condensing
temperature
tc °C
0.5
1
2
3
4
5
6
7
8
EVR 2
+25
+35
+45
0.007
0.008
0.009
0.009
0.011
0.012
0.012
0.014
0.016
0.014
0.017
0.019
0.016
0.019
0.021
0.016
0.02
0.024
0.016
0.02
0.025
0.016
0.02
0.025
0.016
0.02
0.025
EVR 3
+25
+35
+45
0.011
0.013
0.015
0.016
0.018
0.02
0.021
0.024
0.028
0.024
0.029
0.032
0.026
0.031
0.037
0.026
0.033
0.039
0.027
0.035
0.041
0.027
0.035
0.043
0.027
0.035
0.043
EVR 6
+25
+35
+45
0.034
0.038
0.043
0.047
0.054
0.061
0.062
0.072
0.082
0.072
0.085
0.097
0.077
0.093
0.108
0.079
0.098
0.116
0.08
0.101
0.122
0.08
0.101
0.126
0.08
0.102
0.128
EVR 10
+25
+35
+45
0.08
0.091
0.102
0.11
0.127
0.143
0.148
0.171
0.194
0.17
0.2
0.23
0.183
0.22
0.257
0.188
0.233
0.277
0.19
0.241
0.288
0.19
0.241
0.3
0.19
0.243
0.303
EVR 15
+25
+35
+45
0.105
0.12
0.135
0.146
0.167
0.189
0.195
0.224
0.225
0.224
0.253
0.303
0.24
0.289
0.339
0.247
0.307
0.365
0.249
0.316
0.38
0.249
0.317
0.393
0.249
0.32
0.399
EVR 20
+25
+35
+45
0.21
0.239
0.27
0.29
0.333
0.375
0.39
0.45
0.51
0.448
0.526
0.606
0.48
0.58
0.677
0.495
0.614
0.729
0.5
0.632
0.76
0.5
0.633
0.785
0.5
0.639
0.799
EVR 22
+25
+35
+45
0.252
0.287
0.324
0.348
0.4
0.45
0.468
0.54
0.612
0.538
0.631
0.727
0.576
0.696
0.812
0.594
0.737
0.875
0.6
0.758
0.912
0.6
0.76
0.942
0.6
0.767
0.959
EVR 25
+25
+35
+45
0.411
0.468
0.529
0.57
0.653
0.734
0.763
0.881
1.0
0.878
1.032
1.188
0.942
1.136
1.326
0.969
1.203
1.43
0.978
1.239
1.49
0.978
1.241
1.539
0.978
1.253
1.566
EVR 32
+25
+35
+45
0.672
0.765
0.862
0.931
1.069
1.198
1.245
1.436
1.632
1.432
1.686
1.939
1.539
1.854
2.16
1.581
1.964
2.34
1.581
2.022
2.433
1.581
2.025
2.513
1.581
2.025
2.557
EVR 40
+25
+35
+45
1.05
1.195
1.348
1.454
1.657
1.873
1.946
2.245
2.55
2.238
2.635
3.03
2.406
2.897
3.384
2.471
3.068
3.65
2.471
3.161
3.801
2.471
3.166
3.926
2.471
3.166
3.995
Type
+60
R407C
Hot gas
temperature
th °C
0.5
1
2
3
4
5
6
7
8
EVR 2
+25
+35
+45
0.0054
0.0065
0.0076
0.0076
0.0097
0.0108
0.0108
0.0118
0.0140
0.0118
0.0140
0.0173
0.0130
0.0151
0.0184
0.0132
0.0165
0.0198
0.0132
0.0165
0.0209
0.0132
0.0165
0.0209
0.0132
0.0165
0.022
EVR 3
+25
+35
+45
0.010
0.011
0.013
0.013
0.015
0.017
0.017
0.021
0.024
0.021
0.024
0.028
0.022
0.026
0.032
0.022
0.028
0.034
0.022
0.029
0.036
0.022
0.029
0.037
0.022
0.029
0.037
EVR 6
+25
+35
+45
0.029
0.033
0.038
0.040
0.046
0.053
0.053
0.062
0.071
0.06
0.073
0.085
0.063
0.078
0.094
0.065
0.083
0.101
0.065
0.085
0.105
0.065
0.085
0.108
0.065
0.085
0.109
EVR 10
+25
+35
+45
0.069
0.08
0.091
0.095
0.11
0.125
0.125
0.148
0.171
0.143
0.172
0.202
0.152
0.187
0.223
0.154
0.197
0.24
0.155
0.202
0.252
0.155
0.202
0.256
0.155
0.202
0.258
EVR 15
+25
+35
+45
0.091
0.105
0.119
0.125
0.145
0.165
0.165
0.194
0.225
0.189
0.227
0.266
0.198
0.246
0.293
0.202
0.26
0.316
0.204
0.265
0.331
0.204
0.265
0.337
0.204
0.265
0.339
EVR 20
+25
+35
+45
0.183
0.21
0.238
0.249
0.288
0.329
0.329
0.388
0.448
0.377
0.453
0.532
0.398
0.493
0.588
0.405
0.519
0.631
0.408
0.531
0.663
0.408
0.531
0.675
0.408
0.531
0.678
EVR 22
+25
+35
+45
0.219
0.301
0.285
0.299
0.346
0.395
0.395
0.465
0.538
0.452
0.544
0.639
0.477
0.591
0.705
0.486
0.623
0.758
0.491
0.637
0.795
0.491
0.637
0.801
0.491
0.637
0.814
EVR 25
+25
+35
+45
0.357
0.41
0.465
0.489
0.566
0.646
0.647
0.76
0.879
0.738
0.889
1.042
0.779
0.966
1.151
0.794
1.018
1.238
0.801
1.041
1.298
0.801
1.041
1.323
0.801
1.041
1.329
EVR 32
+25
+35
+45
0.582
0.669
0.76
0.798
0.924
1.056
1.054
1.242
1.435
1.206
1.451
1.703
1.273
1.576
1.878
1.297
1.66
2.021
1.699
2.119
2.161
2.17
EVR 40
+25
+35
+45
0.91
1.045
1.188
1.247
1.445
1.65
1.647
1.942
2.244
1.884
2.267
2.66
1.989
2.463
2.935
2.027
2.594
3.157
2.656
3.311
3.378
3.391
Type
+90
An increase in hot gas temperature
th of 10 K reduces valve capacity
approx. 2% and vice versa.
18
Hot gas capacity Gh kg/s at pressure drop across valve Δp bar
Condensing
temperature
tc °C
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Design / Function
EVR 2 (NC)
EVR 10 (NC)
EVR 25 (NC)
4.
16.
18.
20.
24.
28.
29.
30.
31.
36.
37.
40.
43.
44.
45.
49.
50.
51.
53.
73.
74.
75.
76.
80.
83.
84.
90.
Coil
Armature
Valve plate / Pilot valve plate
Earth terminal
Connection for flexible steel
hose
Gasket
Pilot orifice
O-ring
Piston ring
DIN plug
DIN socket
(to DIN 43650)
Protective cap/Terminal box
Valve cover
O-ring
Valve cover gasket
Valve body
Gasket
Threaded plug
Manual operation spindle
Equalization hole
Main channel
Pilot channel
Compression spring
Diaphragm/Servo piston
Valve seat
Main valve plate
Mounting hole
© Danfoss A/S, 02 - 2006
EVR 10 (NO)
EVR 32 and 40 (NC)
EVR solenoid valves are designed on two different
principles:
1. Direct operation
2. Servo operation
1. Direct operation
EVR 2 and 3 are direct operated. The valves open
direct for full flow when the armature (16) moves
up into the magnetic field of the coil.
This means that the valves operate with a min.
differential pressure of 0 bar.
The teflon valve plate (18) is fitted direct on the
armature (16).
Inlet pressure acts from above on the armature
and the valve plate. Thus, inlet pressure, spring
force and the weight of the armature act to close
the valve when the coil is currentless.
2. Servo operation
EVR 6 → 22 are servo operated with a "floating"
diaphragm (80). The pilot orifice (29) of stainless
steel is placed in the centre of the diaphragm. The
teflon pilot valve plate (18) is fitted direct to the
armature (16). When the coil is currentless, the
main orifice and pilot orifice are closed. The pilot
orifice and main orifice are held closed by the
weight of the armature, the armature spring force
and the differential pressure between inlet and
outlet sides.
When current is applied to the coil the armature
is drawn up into the magnetic field and opens the
pilot orifice. This relieves the pressure above the
DKRCCPDBB0A202-520H1275
diaphragm, i.e. the space above the diaphragm
becomes connected to the outlet side of the
valve.
The differential pressure between inlet and
outlet sides then presses the diaphragm away
from the main orifice and opens it for full
flow. Therefore a certain minimum differential
pressure is necessary to open the valve and keep
it open. For EVR 6 → 22 valves this differential
pressure is 0.05 bar.
When current is switched off, the pilot orifice
closes. Via the equalization holes (73) in the
diaphragm, the pressure above the diaphragm
then rises to the same value as the inlet
pressure and the diaphragm closes the main
orifice.
EVR 25, 32 and 40 are servo operated piston
valves. The valves are closed with currentless
coil. The servo piston (80) with main valve
plate (84) closes against the valve seat (83) by
means of the differential pressure between inlet
and outlet side of the valve, the force of the
compression spring (76) and possibly the piston
weight. When current to the coil is switched on,
the pilot orifice (29) opens. This relieves the
pressure on the piston spring side of the
valve. The differential pressure will then open
the valve. The minimum differential pressure
needed for full opening of the valves is 0.2 bar.
EVR (NO) has the opposite function to EVR (NC),
i.e. it is open with de-energised coil.
EVR (NO) is available with servo operation only.
19
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Material specifications
EVR 2 to 25
Solenoid valves
Standard
No.
Description
Type
Material
Analysis
Mat.no.
W.no.
1
Valve body
EVR 2 to 25
Brass
CuZn40Pb2
CW617N
2.0402 17672-1 12165
EVR 2 to 3
Stainless steel
X5 CrNi18-10
2
Cover
EVR 6 to 22
Brass
CuZn40Pb2
CW617N
2.0402 17672-1 12165
EVR 25
Cast iron
EN-GJS-400-18-LT
EN-JS1025
3
Armature tube
EVR 2 to 25
Stainless steel
X2 CrNi19-11
1.4306
10088
4
Armature tube nut
EVR 25
Stainless steel
X8 CrNiS 18-9
1.4305
10088
5
Gasket
EVR 2 to 25
Rubber
Cr
6
Gasket
EVR 25
Al. gasket
Al 99.5
7
Solder tube
EVR 25
Copper
SF-Cu
8
Screws
EVR 2 to 25
Stainless steel
A2-70
9
Spindle for man. operat. EVR 25
Stainless steel
X8 CrNiS 18-9
Gasket
Rubber
Cr
10
EVR 25
DIN
1.4301
10088
1563
3.0255
CW024A
EN
2.0090
10210
1787
12449
3506
1.4305
10088
EVR 32 to 40
Solenoid valves
20
Standard
No.
Description
Type
Material
Analysis
1
Valve body
EVR 32/40
Cast Iron
EN-GJS-400-18-LT EN-JS1025
2
Cover
EVR 32/40
Brass
CuZn40Pb2
2.0402
12165
3
Armature tube
EVR 32/40
Stainless steel X2 CrNi19-11
1.4306
10088
4
Armature tube nut
EVR 32/40
Stainless steel X8 CrNiS 18-9
1.4305
10088
5
Gasket
EVR 32/40
Rubber
Cr
6
Gasket
EVR 32/40
Al. gasket
Al 99.5
7
Solder tube
EVR 32/40
Copper
SF.Cu
8
Screws
EVR 32/40
Stainless steel A2-70
9
Spindle for. man. operation
EVR 32/40
Stainless steel X8 CrNiS 18-9
DKRCCPDBB0A202-520H1275
Mat.no.
CW617N
W.no.
DIN
3.0255
CW024A
EN
1563
2.0090
10210
1787
12449
3506
1.4305
10088
© Danfoss A/S, 01 - 2006
Technical leaflet
Solenoid valves type EVR 2 → 40 − NC / NO
Dimensions and
weights
EVR (NC) 2 → 15 and EVR 6 → 15 (NO) , flare connection
Weight of coil
10 W: approx. 0.3 kg
12 and 20 W: approx. 0.5 kg
With cable connection coil
With DIN plugs coil
With terminal box coil
Connection
Flare
Type
in.
EVR 2
EVR 3
EVR 6
EVR 10
EVR 15
1
/4
mm
6
H1
H2
H3
H4
L
mm
mm
mm
mm
mm
14
73
9
75
L2
L3
L4
mm
mm
mm
45
54
L5 max.
NV
Weight
with
coil
B
B1 max.
mm
mm
mm
kg
85
33
68
0.5
10 W
12/20 W
mm
mm
13
75
1
/4
6
14
73
9
75
45
54
13
75
85
33
68
0.5
3
/8
10
14
73
9
75
45
54
13
75
85
33
68
0.5
3
/8
10
14
78
10
82
45
54
14
75
85
36
68
0.6
1
/2
12
14
78
10
88
45
54
14
75
85
36
68
0.6
1
/2
12
16
79
11
103
45
54
16
75
85
46
68
0.8
5
/8
16
16
79
11
110
45
54
16
75
85
46
68
0.8
5
/8
16
19
86
131
45
54
24
75
85
56
68
1.0
© Danfoss A/S, 02 - 2006
49
DKRCCPDBB0A202-520H1275
21
Solenoid valves type EVR 2 → 40 − NC / NO
Technical leaflet
Dimensions and weights
(continued)
EVR (NC) 2 → 22 and EVR 6 → 22 (NO), solder connection
Weight of coil
10 W: approx. 0.3 kg
12 and 20 W: approx. 0.5 kg
With cable connection coil
With DIN plugs coil
With terminal box coil
Type
Connection
Solder
H2
H3
H4
L
L2
L3
L4
10 W
12/20 W
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
6
14
73
9
102
7
45
54
75
1
6
14
73
9
102
7
45
54
3
10
14
73
9
117
9
45
54
3
10
14
78
10
111
9
45
1
12
14
78
10
127
10
1
12
16
79
11
127
5
16
16
79
11
5
16
19
86
7
22
19
86
7
in.
EVR 2
EVR 3
EVR 6
EVR 10
EVR 15
EVR 20
EVR 22
22
L5 max.
H1
1
/4
/4
/8
/8
/2
/2
/8
/8
/8
49
53
Weight
with coil
B
B1 max.
mm
mm
mm
kg
85
33
68
0.5
75
85
33
68
0.6
75
85
33
68
0.6
54
75
85
36
68
0.6
45
54
75
85
36
68
0.6
10
45
54
75
85
46
68
0.7
160
12
45
54
75
85
46
68
0.7
176
12
45
54
75
85
56
68
1.0
176
17
45
54
75
85
56
68
1.0
/8
22
20
90
191
17
45
54
75
85
72
68
1.5
11/8
28
20
90
214
22
45
54
75
85
72
68
1.5
13/8
35
20
90
281
25
45
54
75
85
72
68
1.5
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
Solenoid valves type EVR 2 → 40 − NC / NO
Technical leaflet
Dimensions and weights (continued)
EVR (NC) 25, 32 og 40, solder connection
EVR 25
EVR 32 and 40
EVR 32 and 40 terminal box
EVR 25 with terminal box coil
Weight of coil
10 W: approx. 0.3 kg
12 and 20 W: approx. 0.5 kg
Type
EVR 25
EVR 32
EVR 40
Connection
Solder
Coil with cable
Coil with DIN plugs
Coil with
terminal box
L5 max.
H1
H2
H3
H4
L
L2
Coil with
cable
connection
L3
Coil with
DIN
connection
L4
10 W
12/20 W
mm
mm
mm
mm
mm
mm
mm
72
256
22
45
54
75
Weight
with
coil
B
B1 max.
mm
mm
mm
kg
85
95
68
3.0
in.
mm
mm
mm
11/8
28
38
138
13/8
35
38
138
72
281
25
45
54
75
85
95
68
3.3
13/8
35
47
111
53
281
25
45
54
75
85
80
68
4.5
15/8
42
47
111
53
281
29
45
54
75
85
80
68
4.6
15/8
42
47
111
53
281
29
45
54
75
85
80
68
4.6
21/8
54
47
111
53
281
34
45
54
75
85
80
68
4.6
EVR (NC) 15 and 20, flange connection
Coil with cable
Coil with DIN plugs
Weight of coil
10 W: approx. 0.3 kg
12 and 20 W: approx. 0.5 kg
Weight of flange set
For EVR 15: 0.6 kg
For EVR 20: 0.9 kg
With terminal box coil
H1
H2
H3
H4
L
L1
L2
10 W
12/20 W
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
EVR 15
19
86
19
49
125
68
45
54
75
EVR 20
20
90
21
53
155
85
45
54
75
Type
© Danfoss A/S, 02 - 2006
DKRCCPDBB0A202-520H1275
Coil with DIN
connection
L4
Coil with
terminal box
L5 max.
Coil with cable
connection
L3
Weight
with coil
excl.
flanges
B
B1 max.
mm
mm
mm
kg
85
80
68
1.2
85
96
68
1.7
23
Technical leaflet
24
Solenoid valves type EVR 2 → 40 − NC / NO
DKRCCPDBB0A202-520H1275
© Danfoss A/S, 01 - 2006
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