Solenoid valves Type EVR 2 → 40 NC/ NO

Solenoid valvesType EVR 2 → 40 NC/ NOREFRIGERATION ANDAIR CONDITIONINGTechnical leaflet

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NO2 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOContentsPageIntroduction....................................................................................... 4Features........................................................................................... 4Approvals ......................................................................................... 4Technical data ................................................................................... 4-5Ordering ........................................................................................ 6-8Liquid capacity Q o kW, R22/ R134a/R404A/R507. .................................................... 9Liquid capacity Q o kW, R407C ..................................................................... 10Suction vapour capacity Q o kW, R22 .............................................................. 10Suction vapour capacity Q o kW, R134a/R404A/R507. ............................................... 11Suction vapour capacity Q o kW, R407C ............................................................ 12Hot gas capacity Q h kW, R22. ...................................................................... 13Hot gas capacity Q h kW, R134a .................................................................... 14Hot gas capacity Q h kW, R404A/R507 .............................................................. 15Hot gas capacity Q h kW, R407C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Hot gas capacity G h kg/s, R22/R134a. .............................................................. 17Hot gas capacity G h kg/s, R404A/R507/R407C ...................................................... 18Design/ Function ................................................................................. 19Material specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Dimensions and weight, EVR (NC) 2 → 15 and EVR 6 -> 15 (NO) with fl are connection .............. 21Dimensions and weight, EVR (NC) 2 → 22 and EVR 6 -> 22 (NO) with solder connection ............. 22Dimensions and weight, EVR (NC) 25, 32 og 40 with solder connection ............................. 23© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 3

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOIntroductionEVR is a direct or servo operated solenoidvalve for liquid, suction, and hot gas lines withfluorinated refrigerants.EVR valves are supplied complete or as separatecomponents, i.e. valve body, coil and flanges, ifrequired, can be ordered separately.FeaturesApprovalsTechnical data• Complete range of solenoid valves forrefrigeration, freezing and air conditioningplant• Supplied both normally closed (NC) andnormally open (NO) with de-energized coil• Wide choice of coils for a.c. and d.c.• Suitable for all fluorinated refrigerants• Designed for media temperatures up to105°CDnV, Det norske Veritas, NorgePressure Equipment Directive (PED) 97/23/ECThe Low Voltage Directive (LVD) 73/23/EC withamendments EN 60730-2-8RefrigerantsCFC, HCFC, HFCTemperature of medium−40 → +105°C with 10 W or 12 W coil.Max. 130°C during defrosting.• MOPD up to 25 bar with 12 W coil• Flare connections up to 5/8 in.• Solder connections up to 2 1/8 in.• Extended ends for solderingmake installation easyIt is not necessary to dismantle the valvewhen soldering in.• EVR are also available with flangeconnectionsPolski Rejestr Statków, PolenMRS, Maritime Register of Shipping, RussiaVersions with UL approval can be supplied toorder.Ambient temperature andenclosure for coilSee "Coils for solenoid valves", RD.3J.E2.024 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOTechnical data(continued)TypeMin.Opening differential pressurewith standard coil∆p barMax. (= MOPD) liquid 2 )10 W a. c. 12 W a. c. 20 W d. c.Temperatureof medium°CMax. workingpressurePBbark v value 1 )EVR 2 0.0 25 18 −40 → 105 45.2 0.16EVR 3 0.0 21 25 18 −40 → 105 45.2 0.27EVR 6 0.05 21 25 18 −40 → 105 35 0.8EVR 6 NO 0.05 21 21 21 −40 →105 35 0.8EVR 10 0.05 21 25 18 −40 → 105 35 1.9EVR 10 NO 0.05 21 21 21 −40 → 105 35 1.9EVR 15 0.05 21 25 18 −40 → 105 32 2.6EVR 15 NO 0.05 21 21 21 −40 → 105 32 2.6EVR 20 (a.c.) 0.05 21 25 13 −40 → 105 32 5.0EVR 20 (d.c.) 0.05 16 −40 → 105 32 5.0EVR 20 NO 0.05 19 19 19 −40 → 105 32 5.0EVR 22 0.05 21 25 13 −40 → 105 32 6.0EVR 22 NO 0.05 19 19 19 −40 → 105 32 6.0EVR 25 3) 0.20 21 25 18 −40 → 105 32 10.0EVR 32 3) 0.20 21 25 18 −40 → 105 32 16.0EVR 40 3) 0.20 21 25 18 −40 → 105 32 25.01) The k v value is the water flow in m 3 /h at a pressure drop across valve of 1 bar, ρ = 1000 kg/m 3 .2) MOPD for media in gas form is approx. 1 bar greater.3)Min. diff. pressure 0.07 bar is needed to stay open.m 3 /hTypeRated capacitykWLiquid Suction vapour Hot gasR22 R134a R404A/R507 R407C R22 R134a R404A/R 507 R407C R22 R134a R404A/R507 R407CEVR 2 3.20 2.90 2.20 3.01 1.50 1.20 1.20 1.46EVR 3 5.40 5.00 3.80 5.08 2.50 2.00 2.00 2.43EVR 6 16.10 14.80 11.20 15.13 1.80 1.30 1.60 1.66 7.40 5.90 6.00 7.18EVR 10 38.20 35.30 26.70 35.91 4.30 3.10 3.90 3.96 17.50 13.90 14.30 16.98EVR 15 52.30 48.30 36.50 49.16 5.90 4.20 5.30 5.43 24.00 19.00 19.60 23.28EVR 20 101.00 92.80 70.30 94.94 11.40 8.10 10.20 10.49 46.20 36.60 37.70 44.81EVR 22 121.00 111.00 84.30 113.74 13.70 9.70 12.20 12.60 55.40 43.90 45.20 53.74EVR 25 201.00 186.00 141.00 188.94 22.80 16.30 20.40 20.98 92.30 73.20 75.30 89.53EVR 32 322.00 297.00 225.00 302.68 36.50 26.10 32.60 33.58 148.00 117.00 120.00 143.56EVR 40 503.00 464.00 351.00 472.82 57.00 40.80 51.00 52.44 231.00 183.00 188.00 224.07Rated liquid and suction vapour capacity is based onevaporating temperature t e = -10°C,liquid temperature ahead of valve t l = +25°C,pressure drop in valve ∆p = 0.15 bar.Rated hot gas capacity is based oncondensing temperature t c = +40°C,pressure drop across valve ∆p = 0.8 bar,hot gas temperature t h = +65°C,and subcooling of refrigerant ∆t sub = 4 K.© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 5

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOOrderingComplete valvesNormally closed (NC) with a.c. coil 1 )TypeConnectionCode no.Valve body + 10 W a. c. coil with 1 m cableFlare 2 )Solder ODFin. mm in./mm in. mmEVR 3 1/ 4 6 032F8109 032F2042 032F2052EVR 6 3/ 8 10 032F8073 032F2082 032F2092EVR 10 1/ 2 12 032F8091 032F2122 032F2132EVR 15 5/ 8 16 032F8102 032F2192 032F2192TypeConnectionCode no.Valve body + 10 W a. c. coil with terminal boxFlare 2 )Solder ODFin. mm in./mm in. mmEVR 3 1/ 4 6 032F8110 032F2043 032F2053EVR 6 3/ 8 10 032F8074 032F2083 032F2093EVR 10 1/ 2 12 032F8092 032F2123 032F2133EVR 15 5/ 8 16 032F8103 032F2193 032F2193EVR 20 7/ 8 22 032F2243 032F22431) Please specify code no., voltage and frequency. Voltage and frequency can also be given in the form of anappendix number, see table "Appendix numbers".2) Supplied without flare nuts.Separate flare nuts:1/ 4 in. or 6 mm, code no. 011L11013/ 8 in. or 10 mm, code no. 011L11351/ 2 in. or 12 mm, code no. 011L11035/ 8 in. or 16 mm, code no. 011L11673) Can only be used with DIN plugAppendix numbersVoltageV12244248115220-230240380-40042024115220240110220-230FrequencyHz5050505050505050506060606050/6050/60Energy consumpt.W101010101010101010101010101010Appendix no.1516171822313337381420293021326 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOOrdering (continued)ComponentsFlare and solder connectionsSeparate valve bodies, normally closed (NC)TypeRequiredcoil typeConnectionFlare 1 )in. mm in./mm in. mmCode no.EVR 2 a.c. 1/ 4 6 032F8056 032F1201 032F1202EVR 3EVR 61/ 4 6 032F8107 032F1206 032F12073/ 8 10 032F8116 032F1204 032F12083/ 8 10 032F8072 032F1212 032F12131/ 2 12 032F8079 032F1209 032F1236Solder ODF With manualValve body without coilWith manualoperationWithout manualoperationEVR 10a.c./d.c.1/ 2 12 032F8095 032F1217 032F12185/ 8 16 032F8098 032F1214 032F12145/ 8 16 032F8101 032F1228 032F1228EVR 155/ 8 16 032F8100 2 ) 032F12277/ 8 22 032F1225 032F12257/ 8 22 032F1240 032F1240a.c.7/ 8 22 032F1254EVR 201 1 / 8 28 032F1244 032F1245d.c.7/ 8 22 032F1264 032F12647/ 8 22 032F1274EVR 22 a.c. 1 3 / 8 35 032F3267 032F32671 1 / 8 032F2200 032F2201EVR 2528 032F2205 032F22061 3 / 8 35 032F2207 032F22081 3 / 8 35 042H1105 042H1106EVR 32a.c./d.c. 1 5 / 8 042H1103 042H110442 042H1107 042H11081 5 / 8 042H1109 042H1110EVR 4042 042H1113 042H11142 1 / 8 54 042H1111 042H1112Separate valve bodies, normally open (NO) 3 )TypeEVR 6Requiredcoil typea.c./d.c.Connection1) Valve bodies are supplied without flare nuts.Separate flare nuts:1/ 4 in. or 6 mm, code no. 011L11013/ 8 in. or 10 mm, code no. 011L11351/ 2 in. or 12 mm, code no. 011L11035/ 8 in. or 16 mm, code no. 011L11672) With manual operation.3) The normal range of coils can be used for the NO valves, with the exception of the doublefrequency versions of 110 V, 50/60 Hz and 220 V, 50/60 Hz.CoilsSee "Coils for solenoid valves", RD.3J.E2.02.Flare 1 )Code no.Valve body without coil 3 )Solder ODFin. mm in. mm in. mm3/ 8 10 032F8085 032F8085 032F1290 032F1295EVR 10 1/ 2 12 032F8090 032F8090 032F1291 032F1296EVR 15EVR 205/ 8 16 032F8099 032F8099 032F1299 032F12997/ 8 22 032F3270 032F32707/ 8 22 032F1260 032F12601 1 / 8 28 032F1269 032F1279EVR 22 a.c. 1 3 / 8 35 032F3268 032F3268© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 7

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOOrdering (continued)ComponentsFlare and solder connectionsSeparate valve bodies, normally closed (NC)EVR 15EVR 20Type Require coil type Connectiona.c./d.c.Code no.Valve body + gaskets +bolts;without coil and flangesWithout manualoperation032F1234Without manualoperation032F1224a.c. Flanges032F1253 032F1243d.c. 032F1273 032F1263CoilsSee "Coils for solenoid valves", RD.3J.E2.02.Flange setsValve typeEVR 15EVR 20ConnectionCode no.SolderWeidin. mm in. mm in.1/ 2 027N11155/ 8 16 027L1117 027L11163/ 4 027N11207/ 8 22 027L1123 027L11223/ 4 027N12207/ 8 22 027L1223 027L12221 027N12251 1 / 8 28 027L1229 027L1228ExampleEVR 15 without manual operation,code no. 032F1224+ 1/2 in. weld flange set,code no. 027N1115+ coil with termfnal box, 220 V, 50 Hz,code no. 018F6701(See "Coils for solenoid valves",RD.3J.E2.02.).AccessoriesDescriptionMounting bracket for EVR 2, 3, 6 and 10Strainer FA for direct mountingCode no.032F0197See "FA"8 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletCapacitySolenoid valves type EVR 2 → 40 − NC / NOLiquid capacity Q e kWTypeLiquid capacity Q e kW at pressure drop across valve ∆p bar0.1 0.2 0.3 0.4 0.5EVR 2 2.6 3.7 4.6 5.3 5.9EVR 3 4.5 6.3 7.7 8.9 9.9EVR 6 13.1 18.6 22.8 26.3 29.4EVR 10 31.4 44.1 54.2 62.5 69.9EVR 15 42.7 60.3 74.1 85.5 95.7EVR 20 82.2 116.0 143.0 165.0 184.0EVR 22 99.0 139.0 171.0 197.0 220.0EVR 25 165.0 232.0 285.0 329.0 368.0EVR 32 263.0 372.0 455.0 526.0 588.0EVR 40 411.0 581.0 712.0 822.0 919.0R22Liquid capacity Q e kWTypeCapacities are based onliquid temperature t l = +25°C ahead of valve,evaporating temperature t e = −10°C,superheat 0 K.Correction factorsWhen sizing valves, the plant capacity must bemultiplied by a correctionfactor depending on liquid temperaturet l ahead of valve/evaporator.When the corrected capacity is known, theselection can be made from the table.Liquid capacity Q e kW at pressure drop across valve ∆p barR134a0.1 0.2 0.3 0.4 0.5EVR 2 2.4 3.4 4.2 4.9 5.4EVR 3 4.1 5.8 7.1 8.2 9.1EVR 6 12.1 17.2 21.0 24.3 27.1EVR 10 28.8 40.7 49.9 57.6 64.4EVR 15 39.4 55.7 68.3 78.8 88.1EVR 20 75.8 107.0 131.0 152.0 170.0EVR 22 90.9 129.0 158.0 182.0 203.0EVR 25 152.0 214.0 263.0 303.0 339.0EVR 32 243.0 343.0 420.0 485.0 542.0EVR 40 379.0 536.0 656.0 758.0 847.0Liquid capacity Q e kWTypeLiquid capacity Q e kW at pressure drop across valve ∆p barR404A/R5070.1 0.2 0.3 0.4 0.5EVR 2 1.8 2.6 3.2 3.7 4.1EVR 3 3.1 4.4 5.4 6.2 6.9EVR 6 9.2 13.0 15.9 18.4 20.5EVR 10 21.8 30.8 37.8 43.6 48.8EVR 15 29.8 42.2 51.7 59.6 66.8EVR 20 57.4 81.1 99.4 115.0 128.0EVR 22 68.9 97.4 119.0 138.0 169.0EVR 25 115.0 162.0 199.0 230.0 257.0EVR 32 184.0 260.0 318.0 367.0 411.0EVR 40 287.0 406.0 497.0 574.0 642.0Correction factors for liquid temperature t lt l °C −10 0 10 15 20 25 30 35 40 45 50R22 0.76 0.82 0.88 0.92 0.96 1.0 1.05 1.10 1.16 1.22 1.30R134a 0.73 0.79 0.86 0.90 0.95 1.0 1.06 1.12 1.19 1.27 1.37R404A/R507 0.65 0.72 0.81 0.86 0.93 1.0 1.09 1.20 1.33 1.51 1.74© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 9

Technical leafletCapacity(continued)Solenoid valves type EVR 2 → 40 − NC / NOLiquid capacity Q e kWR407CTypeLiquid capacity Q e kW at pressure drop across valve ∆p bar0.1 0.2 0.3 0.4 0.5EVR 2 2.4 3.4 4.3 5.0 5.3EVR 3 4.2 5.9 7.2 8.4 9.3EVR 6 12.3 17.5 21.4 24.7 27.6EVR 10 29.5 41.5 50.9 58.7 65.7EVR 15 40.1 56.7 69.7 80.4 90.0EVR 20 77.0 109.0 134.0 155.0 172.0EVR 22 93.1 130.0 161.0 185.2 207.0EVR 25 155.0 218.0 268.0 309.0 346.0EVR 32 247.0 350.0 428.0 494.0 553.0EVR 40 386.0 546.0 669.0 773.0 864.0Capacities are based on liquid temperaturet l = +25°C ahead of valve, evaporatingtemperature t e = −10°C, and superheat 0 K.Correction factorsWhen sizing valves, the plant capacity must bemultiplied by a correctionfactor depending on liquid temperaturet l ahead of valve/evaporator.When the corrected capacity is known, theselection can be made from the table.Correction factors based on liquid temperature t lt l °C −10 0 10 15 20 25 30 35 40 45 50R407C 0.71 0.78 0.85 0.89 0.94 1.0 1.06 1.14 1.23 1.33 1.46Capacities are based on liquidtemperature t l = +25°C ahead ofevaporator.The table values refer to the evaporatorcapacity and are given as a functionof evaporating temperature t e andpressure drop ∆p across valve.Capacities are based on dry, saturatedvapour ahead of valve.During operation with superheatedvapour ahead of valve, the capacitiesare reduced by 4% for each 10 Ksuperheat.Suction vapour capacity Q eTypeEVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Pressure drop∆p bar0.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.2Suction vapour capacity Q e kW at evaporating temperature t e °C–40 –30 –20 –10 0 +100.730.870.981.72.12.32.32.83.24.65.46.15.56.57.39.110.912.214.617.419.622.827.230.5Correction factorsWhen sizing valves, the evaporator capacity mustbe multiplied by a correction factor dependingon liquid temperature t l ahead of expansionvalve.When the corrected capacity is known, theselection can be made from the table.Correction factors for liquid temperature t l0.941.11.32.22.73.13.13.74.25.97.18.17.18.59.711.814.216.118.922.725.729.535.440.21.21.41.62.93.43.94.04.75.37.69.110.39.110.712.315.217.920.424.328.832.638.145.051.01.51.82.03.54.34.84.85.96.69.311.412.711.213.715.218.622.825.329.836.540.546.557.063.31.82.22.54.35.26.05.87.18.211.213.915.913.416.419.022.427.431.735.843.850.756.068.679.2t l °C −10 0 10 15 20 25 30 35 40 45 50R222.12.63.05.16.27.16.98.59.813.316.718.816.020.022.626.632.637.642.652.260.266.581.594.0R22 0.76 0.82 0.88 0.92 0.96 1.0 1.05 1.10 1.16 1.22 1.3010 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOCapacity(continued)Capacities are based on liquidtemperature t l = +25°C aheadof evaporator.The table values refer to theevaporator capacity andare given as a function ofevaporating temperature t e andpressure drop ∆p across valve.Capacities are based on dry,saturated vapour ahead ofvalve.During operation withsuperheated vapour aheadof valve, the capacities arereduced by 4% for each 10 Ksuperheat.Suction vapour capacity Q eTypeEVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Pressure dropacross valve ∆p bar0.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.2Suction vapour capacity Q e kWTypeEVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Pressure dropacross valve ∆p bar0.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.20.10.150.2Suction vapour capacity Q e kW at evaporating temperature t e °CR134a–40 –30 –20 –10 0 +100.460.530.581.11.31.41.51.71.92.93.33.73.44.04.45.86.67.39.310.611.714.516.518.30.730.870.981.72.12.32.32.83.24.65.46.15.56.57.39.110.912.214.617.419.622.827.230.50.841.01.12.02.42.72.73.33.75.36.37.16.37.58.510.512.514.116.820.022.626.331.335.31.11.31.52.63.13.53.64.24.87.08.19.38.39.711.113.916.318.522.226.129.634.840.846.31.41.71.93.34.04.54.55.56.18.610.611.710.312.714.017.221.123.427.733.837.443.352.858.51.72.02.44.04.95.75.56.77.810.613.015.012.715.517.921.125.929.933.841.447.452.864.874.8R404A/R507Suction vapour capacity Q e kW at evaporating temperature t e °C–40 –30 –20 –10 0 +100.620.730.821.51.72.02.02.42.73.94.65.24.65.56.27.79.110.312.314.616.519.322.825.80.80.971.11.92.32.62.63.23.65.06.16.96.07.38.310.112.113.816.219.422.025.330.334.51.11.31.42.53.03.43.54.14.76.77.99.08.09.510.813.315.818.021.325.328.833.339.545.01.31.61.83.23.94.34.35.35.98.310.211.410.012.213.616.620.422.726.632.636.341.551.056.81.62.02.33.94.85.55.36.57.510.212.514.412.215.017.320.425.028.832.640.046.151.062.572.12.02.42.84.75.86.76.47.99.112.315.217.514.818.221.024.630.335.039.448.556.061.575.687.5Correction factorsWhen sizing valves, the plant capacity must bemultiplied by a correctionfactor depending on liquid temperaturet l ahead of valve/evaporator.When the corrected capacity is known, theselection can be made from the table.Correction factors based on liquid temperature t lt l °C −10 0 10 15 20 25 30 35 40 45 50R134a 0.73 0.79 0.86 0.90 0.95 1.0 1.06 1.12 1.19 1.27 1.37R404A/R507 0.65 0.72 0.81 0.86 0.93 1.0 1.09 1.20 1.33 1.51 1.74© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 11

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOCapacity(continued)TypePressure dropacross valve ∆p barSuction vapour capacity Q e kW at evaporating temperature t e °CR407C–40 –30 –20 –10 0 +10EVR 60.10.150.20.610.720.810.810.951.11.11.31.41.41.71.81.72.12.42.02.52.9EVR 100.10.150.21.41.71.91.92.32.72.63.03.53.24.04.44.04.95.64.96.06.9EVR 150.10.150.21.92.32.72.73.23.63.64.24.74.45.46.15.56.77.76.78.29.5Capacities are based on liquidtemperature t l = +25°C ahead ofevaporator.The table values refer to theevaporator capacity and are givenas a function of evaporatingtemperature t e and pressure drop ∆pacross valve.Capacities are based on dry,saturated vapour ahead of valve.During operation with superheatedvapour ahead of valve, the capacitiesare reduced by 4% for each 10 Ksuperheat.EVR 20EVR 22EVR 25EVR 32EVR 400.10.150.20.10.150.20.10.150.20.10.150.20.10.150.23.84.55.14.65.46.17.69.110.112.114.416.318.922.625.35.16.17.06.17.38.310.212.213.916.319.522.125.430.434.66.88.19.28.19.511.013.515.918.221.625.629.033.940.145.48.610.511.710.312.614.017.121.023.327.433.637.342.852.458.210.513.114.912.615.417.921.125.829.833.741.247.752.664.574.412.916.218.215.519.421.925.831.636.541.350.658.464.579.191.2Correction factorsWhen sizing valves, the evaporator capacitymust be multiplied by a correction factor depending on liquid temperaturet l ahead of expansion valve. When the corrected capacity is known, theselection can be made from the table.Correction factors based on liquid temperature t lt l °C −10 0 10 15 20 25 30 35 40 45 50R407C 0.71 0.78 0.85 0.89 0.94 1.0 1.06 1.14 1.23 1.33 1.46Hot gas defrostingWith hot gas defrosting it is not normally possibleto select a valve from condensing temperature t cand evaporating temperature t e .This is because the pressure in the evaporatoras a rule quickly rises to a value near that of thecondensing pressure. It remains at this valueuntil the defrosting is finished.In most cases therefore, the valve will be selectedfrom condensing temperature t c and pressuredrop ∆p across the valve, as shown in theexample for heat recovery.Heat recoveryThe following is given:Refrigerant = R22Evaporating temperature t e = – 30°CCondensing temperature t c = + 40°CHot gas temperature ahead of valve t h = + 85°CHeat recovery condenser yield Q h = 8 kWThe capacity table for 22 with t c = + 40°C givesthe the capacity for an EVR 10 as 8.9 kW, whenpressure drop ∆p is 0.2 bar.The correction factor for t e = – 30°C is given in thetable as 0.94.The correction for hot gas temperaturet h = + 85°C has been calculated as 4% whichcorresponds to a factor of 1.04.Q h must be corrected with factors found:With ∆p = 0.2 bar isQ h = 8.9 x 0.94 x 1.04 = 8.7 kW.With ∆p = 0.1 bar, Q h becomes only6.3 x 0.94 x 1.04 = 6.2 kW.An EVR 6 would also be able to give the requiredcapacity, but with ∆p at approx. 1 bar.The EVR 6 is therefore too small.The EVR is so large that it is doubtful whether thenecessary ∆p 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 thegiven conditions.12 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOCapacity(continued)An increase in hot gas temperaturet h of 10 K, based on t h = t c +25°C,reduces valve capacity approx. 2%and vice versa.A change in evaporating temperaturet e changes valve capacity; seecorrection factor table below.Hot gas capacity Q h kWTypeEVR 2EVR 3EVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Pressure dropacross valve∆p bar0.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.6Hot gas capacity Q h kWEvaporating temp. t e =-10°C. Hot gas temp. t h =t c +25°C. Subcooling ∆t sub =4 KCondensing temperature t c °C+20 +30 +40 +50 +600.470.670.961.321.870.801.141.632.233.152.43.44.86.69.35.68.011.415.722.27.711.015.721.530.314.821.130.041.358.317.825.336.149.570.029.642.160.282.5117.047.467.496.3132.0187.074.0105.0151.0206.0291.00.500.711.021.371.990.851.201.722.313.352.53.65.16.89.96.08.512.116.223.68.211.616.622.232.315.722.331.942.762.118.826.838.351.274.531.444.663.887.9124.050.271.4102.0140.0199.078.5112.0159.0222.0310.00.530.751.071.482.080.891.261.802.493.522.63.75.37.410.46.38.912.717.524.88.612.117.324.033.916.523.433.346.265.219.728.040.055.478.232.946.766.692.3130.052.674.7107.0148.0209.082.3117.0167.0231.0326.00.540.771.101.572.160.921.301.852.653.642.73.45.57.910.86.59.213.018.725.68.812.517.825.535.017.024.134.349.167.420.428.941.258.980.834.048.268.698.2135.054.477.1110.0157.0216.085.0121.0172.0246.0337.0R220.550.781.111.592.190.931.321.872.683.692.83.95.67.910.96.59.313.218.926.08.912.718.025.935.517.224.434.749.668.420.629.341.659.582.034.448.869.499.2137.055.078.1111.0159.0219.086.0122.0174.0248.0342.0Correction factorsWhen sizing valves, the table value must bemultiplied by a correction factor depending onevaporating temperature t e .Correction factors for evaporating temperatur t et e °C −40 −30 −20 −10 0 +10R22 0.90 0.94 0.97 1.0 1.03 1.05© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 13

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOCapacity(continued)An increase in hot gas temperaturet h of 10 K, based on t h = t c +25°C,reduces valve capacity approx. 2%and vice versa.A change in evaporating temperaturet e changes valve capacity; seecorrection factor table below.Hot gas capacity Q h kWTypeEVR 2EVR 3EVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Pressure dropacross valve∆p bar0.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.6Hot gas capacity Q h kWR134aEvaporating temp. t e =-10°C. Hot gas temp. t h =t c +25°C. Subcooling ∆t sub =4 KvCondensing temperature t c °C+20 +30 +40 +50 +600.380.540.741.061.500.640.911.261.792.571.882.693.735.297.614.56.48.912.618.16.18.712.117.224.811.816.823.433.147.614.120.228.039.757.123.633.646.666.295.237.653.874.7106.0152.058.884.1117.0166.0238.00.400.570.821.131.610.670.961.381.902.721.992.844.085.628.054.76.89.713.319.16.59.213.318.326.212.517.825.535.150.315.021.330.642.260.424.935.551.070.2101.039.856.881.6112.0161.062.388.8127.0176.0252.00.410.590.841.171.670.700.991.421.982.822.072.954.225.868.374.97.010.013.919.96.79.613.719.027.213.018.426.436.652.315.522.131.643.962.825.936.852.773.2105.041.458.984.3117.0167.064.792.1132.0183.0262.00.420.600.861.231.700.711.011.442.082.882.113.004.286.168.525.07.110.214.620.26.79.713.920.027.713.218.726.738.553.315.822.632.146.263.926.437.453.477.0107.042.159.885.4123.0170.065.893.5134.0192.0266.00.420.590.851.221.690.711.001.432.052.862.092.974.236.088.465.07.110.114.420.16.89.713.819.827.513.118.626.538.052.915.722.331.745.663.526.237.152.976.0106.041.859.484.6122.0169.065.392.8132.0190.0265.0Correction factorsWhen sizing valves, the table value must bemultiplied by a correction factor depending onevaporating temperature t e .Correction factors for evaporating temperatur t et e °C −40 −30 −20 −10 0 +10R134A 0.88 0.92 0.98 1.0 1.04 1.0814 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOCapacity(continued)An increase in hot gas temperaturet h of 10 K, based on t h = t c +25°C,reduces valve capacity approx. 2%and vice versa.A change in evaporating temperaturet e changes valve capacity; seecorrection factor table below.Hot gas capacity Q h kWTypeEVR 2EVR 3EVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Pressure dropacross valve∆p bar0.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.6Hot gas capacity Q h kWR404A/R507Evaporating temp. t e =-10°C. Hot gas temp. t h =t c +25°C. Subcooling ∆t sub =4 KCondensing temperature t c °C+20 +30 +40 +50 +600.430.610.871.191.680.731.031.462.012.832.163.034.345.948.375.17.210.314.119.97.09.914.119.327.213.418.927.137.152.416.122.732.544.562.826.837.954.274.2105.043.060.686.7119.0167.067.094.8136.0186.0262.00.440.620.871.211.700.741.041.482.042.872.183.084.386.058.525.27.310.414.420.37.110.014.319.727.713.719.227.437.853.316.423.132.945.464.027.438.454.975.6107.043.861.487.8121.0171.068.596.0137.0189.0266.00.430.610.871.211.690.731.031.472.032.842.153.054.356.028.435.17.310.314.320.07.09.914.219.627.613.519.127.237.752.616.122.932.745.263.226.938.254.575.3105.043.061.187.2120.0168.067.395.5136.0188.0263.00.400.580.821.191.620.690.981.392.002.742.052.904.135.928.104.96.99.814.119.26.79.413.419.226.312.818.225.837.050.615.421.831.044.460.825.636.351.774.0101.040.958.182.7118.0162.064.090.8129.0185.0253.00.370.530.751.071.480.630.891.271.812.501.862.643.765.377.404.46.38.912.817.66.18.612.217.524.111.616.523.533.646.214.019.828.240.355.523.333.047.067.292.537.352.875.2107.0148.058.382.5117.0168.0231.0Correction factorsWhen sizing valves, the table value must bemultiplied by a correction factor depending onevaporating temperature t e .Correction factors for evaporating temperatur t et e °C −40 −30 −20 −10 0 +10R440A/R507 0.86 0.88 0.93 1.0 1.03 1.07© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 15

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOCapacity(continued)An increase in hot gas temperaturet h of 10 K, based on t h = t c +25°C,reduces valve capacity approx. 2%and vice versa.A change in evaporating temperaturet e changes valve capacity; seecorrection factor table below.Hot gas capacity Q h kWTypeEVR 2EVR 3EVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Pressure dropacross valve∆p bar0.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.60.10.20.40.81.6Hot gas capacity Q h kWR407CEvaporating temp. t e =-10°C. Hot gas temp. t h =t c +25°C. Subcooling ∆t sub =4 KCondensing temperature t c °C+20 +30 +40 +50 +600.530.751.081.482.090.91.281.832.503.532.73.85.47.410.46.39.012.817.624.98.612.317.624.133.916.623.633.646.365.319.928.340.455.478.433.247.267.492.4131.053.175.5107.9147.8209.482.9117.6169.1230.7325.9Correction factorsWhen sizing valves, the table value must bemultiplied by a correction factor depending onevaporating temperature t e .0.550.781.121.512.190.941.321.892.543.692.84.05.67.510.96.69.413.317.826.09.012.818.324.435.517.324.535.14768.320.729.542.156.382.034.549.170.296.7136.455.278.5112.2154.0218.986.4123.2174.9244.2341.00.570.801.141.582.230.951.351.932.663.772.84.05.77.911.16.79.513.618.726.59.212.918.525.736.317.725.035.649.469.821.130.042.859.383.735.250.071.398.8139.156.379.9114.5158.4223.688.1125.2178.7247.2348.80.560.801.141.632.250.961.351.922.763.792.83.55.78.211.26.89.613.519.426.69.21318.526.536.417.725.135.751.170.121.230.142.861.38435.450.171.3102.1140.456.680.2114.4163.3224.688.4125.8178.9255.8350.50.540.761.091.562.150.911.291.832.633.622.73.85.57.710.76.49.112.918.525.58.712.417.625.434.816.923.934.048.667.020.228.740.858.380.433.747.868.097.2134.353.976.5108.8155.8214.684.3119.6170.5243.0335.2Correction factors for evaporating temperatur t et e °C −40 −30 −20 −10 0 +10R407C 0.90 0.94 0.97 1.0 1.03 1.0516 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOCapacity(continued)An increase in hot gas temperaturet h of 10 K reduces valve capacityapprox. 2% and vice versa.Hot gas capacity G h kg/sTypeEVR 2EVR 3EVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40TypeEVR 2EVR 3EVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Hot gastemperatureth °C+90Hot gastemperatureth °C+60Condensingtemperaturetc °C+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45Condensingtemperaturetc °C+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45Hot gas capacity G h kg/s at pressure drop across valve ∆p bar0.5 1 2 3 4 5 6 7 80.0050.0060.0070.0090.010.0120.0270.0310.0350.0640.0740.0840.0840.0970.110.1690.1940.220.2030.2790.2640.3310.380.4310.5390.6190.7040.8430.9681.10.0070.0090.010.0120.0140.0160.0370.0430.0490.0880.1020.1160.1160.1340.1530.2310.2670.3050.2770.320.3660.4530.5240.5980.7390.8560.9781.1551.3381.5280.010.0110.0130.0160.0190.0220.0490.0570.0660.1160.1370.1580.1530.180.2080.3050.3590.4150.3660.4310.4980.5990.7040.8140.9761.151.3291.5251.7982.0780.0110.0130.0160.0190.0220.0260.0550.0670.0780.1310.1580.1850.1730.2080.2440.3460.4160.4880.4150.4990.5860.6770.8160.9561.1061.3311.5621.7282.082.440.0120.0140.0170.020.0240.0290.0580.0720.0860.1390.1720.2050.1820.2260.2690.3650.4520.5390.4380.5420.6470.7150.8861.0561.1681.4461.7231.8252.262.6930.0120.0150.0180.020.0250.0310.0590.0750.0920.140.1790.2180.1840.2360.2870.3680.4720.5740.4420.5660.6890.7220.9251.1251.1791.5091.8371.8432.3582.870.0120.0150.0190.020.0260.0320.0590.0770.0950.140.1820.2270.1840.2390.2980.3680.4780.5970.4420.5740.7160.7220.9381.169Hot gas capacity G h kg/s at pressure drop across valve ∆p bar0.0120.0150.0190.020.0260.0330.0590.0770.0970.140.1820.2310.1840.2390.3040.3680.4780.6080.4420.5740.7220.7220.9381.192R 220.0120.0150.020.020.0260.0330.0590.0770.0980.140.1820.2320.1840.2390.3050.3680.4780.6110.4420.5740.7330.7220.9381.1971.5311.909 1.947 1.9552.3932.983 3.043 3.0550.5 1 2 3 4 5 6 7 80.0050.0060.0070.0080.0090.010.0240.0280.0320.0570.0660.0760.0740.0870.10.1490.1740.20.1790.2090.240.2920.3410.3930.4780.5560.6410.7470.871.0020.0070.0080.0090.0110.0130.0160.0320.0380.0450.0750.090.1070.10.1190.140.1990.2380.280.2390.2860.3360.3910.4670.5490.6380.7630.8970.9981.1921.4020.0080.010.0120.0110.0160.020.040.0490.0590.0940.1170.1410.1240.1540.1850.2470.3070.370.2960.3680.4440.4860.6020.7250.7930.9941.1971.241.5531.870.0080.0110.0140.0140.0180.0230.0410.0550.0680.0980.130.1610.1290.1710.2120.2580.3410.4230.310.4090.5080.5060.6680.830.8261.0911.3541.2911.7042.1170.0080.0120.0150.0140.0180.0250.0410.0560.0720.0980.1320.170.1290.1670.2230.2580.3470.4470.310.4160.5360.5060.6790.8760.8261.1081.4321.2911.7312.2370.0120.0150.0180.0250.0560.0730.1320.1720.1670.2250.3470.4520.4160.5420.6790.8851.1081.4461.7312.2590.0120.015 0.015 0.0150.0180.025 0.025 0.0250.0560.073 0.073 0.0730.1320.172 0.172 0.1720.1670.225 0.225 0.2250.3470.452 0.452 0.4520.4160.542 0.542 0.5420.6790.885 0.885 0.8851.1081.446 1.446 1.4461.7312.259 2.259R134a© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 17

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOCapacity(continued)Hot gas capacity G h kg/sTypeEVR 2EVR 3EVR 6EVR 10EVR 15EVR 20EVR 22EVR 25EVR 32EVR 40Hot gastemperatureth °C+60Condensingtemperaturetc °C+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45+25+35+45Hot gas capacity G h kg/s at pressure drop across valve ∆p bar0.5 1 2 3 4 5 6 7 80.0070.0080.0090.0110.0130.0150.0340.0380.0430.080.0910.1020.1050.120.1350.210.2390.270.2520.2870.3240.4110.4680.5290.6720.7650.8621.051.1951.3480.0090.0110.0120.0160.0180.020.0470.0540.0610.110.1270.1430.1460.1670.1890.290.3330.3750.3480.40.450.570.6530.7340.9311.0691.1981.4541.6571.8730.0120.0140.0160.0210.0240.0280.0620.0720.0820.1480.1710.1940.1950.2240.2250.390.450.510.4680.540.6120.7630.8811.01.2451.4361.6321.9462.2452.550.0140.0170.0190.0240.0290.0320.0720.0850.0970.170.20.230.2240.2530.3030.4480.5260.6060.5380.6310.7270.8781.0321.1881.4321.6861.9392.2382.6353.030.0160.0190.0210.0260.0310.0370.0770.0930.1080.1830.220.2570.240.2890.3390.480.580.6770.5760.6960.8120.9421.1361.3261.5391.8542.162.4062.8973.3840.0160.020.0240.0260.0330.0390.0790.0980.1160.1880.2330.2770.2470.3070.3650.4950.6140.7290.5940.7370.8750.9691.2031.431.5811.9642.342.4713.0683.65R404A/R5070.0160.020.0250.0270.0350.0410.080.1010.1220.190.2410.2880.2490.3160.380.50.6320.760.60.7580.9120.9781.2391.491.5812.0222.4332.4713.1613.8010.0160.020.0250.0270.0350.0430.080.1010.1260.190.2410.30.2490.3170.3930.50.6330.7850.60.760.9420.9781.2411.5391.5812.0252.5132.4713.1663.9260.0160.020.0250.0270.0350.0430.080.1020.1280.190.2430.3030.2490.320.3990.50.6390.7990.60.7670.9590.9781.2531.5661.5812.0252.5572.4713.1663.995R407CTypeHot gastemperatureth °CCondensingtemperaturetc °CHot gas capacity G h kg/s at pressure drop across valve ∆p bar0.5 1 2 3 4 5 6 7 8EVR 2+25+35+450.00540.00650.00760.00760.00970.01080.01080.01180.01400.01180.01400.01730.01300.01510.01840.01320.01650.01980.01320.01650.02090.01320.01650.02090.01320.01650.022EVR 3+25+35+450.0100.0110.0130.0130.0150.0170.0170.0210.0240.0210.0240.0280.0220.0260.0320.0220.0280.0340.0220.0290.0360.0220.0290.0370.0220.0290.037EVR 6+25+35+450.0290.0330.0380.0400.0460.0530.0530.0620.0710.060.0730.0850.0630.0780.0940.0650.0830.1010.0650.0850.1050.0650.0850.1080.0650.0850.109EVR 10+25+35+450.0690.080.0910.0950.110.1250.1250.1480.1710.1430.1720.2020.1520.1870.2230.1540.1970.240.1550.2020.2520.1550.2020.2560.1550.2020.258EVR 15EVR 20+90+25+35+45+25+35+450.0910.1050.1190.1830.210.2380.1250.1450.1650.2490.2880.3290.1650.1940.2250.3290.3880.4480.1890.2270.2660.3770.4530.5320.1980.2460.2930.3980.4930.5880.2020.260.3160.4050.5190.6310.2040.2650.3310.4080.5310.6630.2040.2650.3370.4080.5310.6750.2040.2650.3390.4080.5310.678EVR 22+25+35+450.2190.3010.2850.2990.3460.3950.3950.4650.5380.4520.5440.6390.4770.5910.7050.4860.6230.7580.4910.6370.7950.4910.6370.8010.4910.6370.814EVR 25+25+35+450.3570.410.4650.4890.5660.6460.6470.760.8790.7380.8891.0420.7790.9661.1510.7941.0181.2380.8011.0411.2980.8011.0411.3230.8011.0411.329EVR 32+25+35+450.5820.6690.760.7980.9241.0561.0541.2421.4351.2061.4511.7031.2731.5761.8781.2971.662.0211.6992.119 2.161 2.17An increase in hot gas temperaturet h of 10 K reduces valve capacityapprox. 2% and vice versa.EVR 40+25+35+450.911.0451.1881.2471.4451.651.6471.9422.2441.8842.2672.661.9892.4632.9352.0272.5943.1572.6563.311 3.378 3.39118 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NODesign / FunctionEVR 2 (NC)EVR 10 (NC)EVR 10 (NO)EVR 25 (NC)EVR 32 and 40 (NC)4. Coil16. Armature18. Valve plate / Pilot valve plate20. Earth terminal24. Connection for flexible steelhose28. Gasket29. Pilot orifice30. O-ring31. Piston ring36. DIN plug37. DIN socket(to DIN 43650)40. Protective cap/Terminal box43. Valve cover44. O-ring45. Valve cover gasket49. Valve body50. Gasket51. Threaded plug53. Manual operation spindle73. Equalization hole74. Main channel75. Pilot channel76. Compression spring80. Diaphragm/Servo piston83. Valve seat84. Main valve plate90. Mounting holeEVR solenoid valves are designed on two differentprinciples:1. Direct operation2. Servo operation1. Direct operationEVR 2 and 3 are direct operated. The valves opendirect for full flow when the armature (16) movesup 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 thearmature (16).Inlet pressure acts from above on the armatureand the valve plate. Thus, inlet pressure, springforce and the weight of the armature act to closethe valve when the coil is currentless.2. Servo operationEVR 6 → 22 are servo operated with a "floating"diaphragm (80). The pilot orifice (29) of stainlesssteel is placed in the centre of the diaphragm. Theteflon pilot valve plate (18) is fitted direct to thearmature (16). When the coil is currentless, themain orifice and pilot orifice are closed. The pilotorifice and main orifice are held closed by theweight of the armature, the armature spring forceand the differential pressure between inlet andoutlet sides.When current is applied to the coil the armatureis drawn up into the magnetic field and opens thepilot orifice. This relieves the pressure above thediaphragm, i.e. the space above the diaphragmbecomes connected to the outlet side of thevalve.The differential pressure between inlet andoutlet sides then presses the diaphragm awayfrom the main orifice and opens it for fullflow. Therefore a certain minimum differentialpressure is necessary to open the valve and keepit open. For EVR 6 → 22 valves this differentialpressure is 0.05 bar.When current is switched off, the pilot orificecloses. Via the equalization holes (73) in thediaphragm, the pressure above the diaphragmthen rises to the same value as the inletpressure and the diaphragm closes the mainorifice.EVR 25, 32 and 40 are servo operated pistonvalves. The valves are closed with currentlesscoil. The servo piston (80) with main valveplate (84) closes against the valve seat (83) bymeans of the differential pressure between inletand outlet side of the valve, the force of thecompression spring (76) and possibly the pistonweight. When current to the coil is switched on,the pilot orifice (29) opens. This relieves thepressure on the piston spring side of thevalve. The differential pressure will then openthe valve. The minimum differential pressureneeded 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.© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 19

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NOMaterial specificationsEVR 2 to 25Solenoid valvesStandardNo. Description Type Material Analysis Mat.no. W.no. DIN EN1 Valve body EVR 2 to 25 Brass CuZn40Pb2 CW617N 2.0402 17672-1 12165EVR 2 to 3 Stainless steel X5 CrNi18-10 1.4301 100882 CoverEVR 6 to 22 Brass CuZn40Pb2 CW617N 2.0402 17672-1 12165EVR 25 Cast iron EN-GJS-400-18-LT EN-JS1025 15633 Armature tube EVR 2 to 25 Stainless steel X2 CrNi19-11 1.4306 100884 Armature tube nut EVR 25 Stainless steel X8 CrNiS 18-9 1.4305 100885 Gasket EVR 2 to 25 Rubber Cr6 Gasket EVR 25 Al. gasket Al 99.5 3.0255 102107 Solder tube EVR 25 Copper SF-Cu CW024A 2.0090 1787 124498 Screws EVR 2 to 25 Stainless steel A2-70 35069 Spindle for man. operat. EVR 25 Stainless steel X8 CrNiS 18-9 1.4305 1008810 Gasket EVR 25 Rubber CrEVR 32 to 40Solenoid valvesStandardNo. Description Type Material Analysis Mat.no. W.no. DIN EN1 Valve body EVR 32/40 Cast Iron EN-GJS-400-18-LT EN-JS1025 15632 Cover EVR 32/40 Brass CuZn40Pb2 CW617N 2.0402 121653 Armature tube EVR 32/40 Stainless steel X2 CrNi19-11 1.4306 100884 Armature tube nut EVR 32/40 Stainless steel X8 CrNiS 18-9 1.4305 100885 Gasket EVR 32/40 Rubber Cr6 Gasket EVR 32/40 Al. gasket Al 99.5 3.0255 102107 Solder tube EVR 32/40 Copper SF.Cu CW024A 2.0090 1787 124498 Screws EVR 32/40 Stainless steel A2-70 35069 Spindle for. man. operation EVR 32/40 Stainless steel X8 CrNiS 18-9 1.4305 1008820 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NODimensions andweightsEVR (NC) 2 → 15 and EVR 6 → 15 (NO) , flare connectionWeight of coil10 W: approx. 0.3 kg12 and 20 W: approx. 0.5 kgWith cable connection coilWith DIN plugs coilWith terminal box coilTypeConnectionFlareH 1 H 2 H 3 H 4 L L 2 L 3 L 4NVL 5 max.10 W 12/20 Win. mm mm mm mm mm mm mm mm mm mm mm mm mm mm kgEVR 2 1 / 4 6 14 73 9 75 45 54 13 75 85 33 68 0.5EVR 3EVR 6EVR 101/ 4 6 14 73 9 75 45 54 13 75 85 33 68 0.53/ 8 10 14 73 9 75 45 54 13 75 85 33 68 0.53/ 8 10 14 78 10 82 45 54 14 75 85 36 68 0.61/ 2 12 14 78 10 88 45 54 14 75 85 36 68 0.61/ 2 12 16 79 11 103 45 54 16 75 85 46 68 0.85/ 8 16 16 79 11 110 45 54 16 75 85 46 68 0.8EVR 15 5/ 8 16 19 86 49 131 45 54 24 75 85 56 68 1.0BB 1 max.Weightwithcoil© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 21

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NODimensions and weights(continued)EVR (NC) 2 → 22 and EVR 6 → 22 (NO), solder connectionWeight of coil10 W: approx. 0.3 kg12 and 20 W: approx. 0.5 kgWith cable connection coilWith DIN plugs coilWith terminal box coilTypeConnectionSolderH 1 H 2 H 3 H 4 L L 2 L 3 L 4L 5 max.10 W 12/20 Win. mm mm mm mm mm mm mm mm mm mm mm mm mm kgEVR 2 1 / 4 6 14 73 9 102 7 45 54 75 85 33 68 0.5EVR 3EVR 6EVR 10EVR 15EVR 201/ 4 6 14 73 9 102 7 45 54 75 85 33 68 0.63/ 8 10 14 73 9 117 9 45 54 75 85 33 68 0.63/ 8 10 14 78 10 111 9 45 54 75 85 36 68 0.61/ 2 12 14 78 10 127 10 45 54 75 85 36 68 0.61/ 2 12 16 79 11 127 10 45 54 75 85 46 68 0.75/ 8 16 16 79 11 160 12 45 54 75 85 46 68 0.75/ 8 16 19 86 49 176 12 45 54 75 85 56 68 1.07/ 8 22 19 86 176 17 45 54 75 85 56 68 1.07/ 8 22 20 90 53 191 17 45 54 75 85 72 68 1.51 1 / 8 28 20 90 214 22 45 54 75 85 72 68 1.5EVR 22 1 3 / 8 35 20 90 281 25 45 54 75 85 72 68 1.5BB 1 max.Weightwith coil22 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NODimensions and weights (continued)EVR (NC) 25, 32 og 40, solder connectionEVR 25EVR 32 and 40 terminal boxEVR 32 and 40EVR 25 with terminal box coilWeight of coil10 W: approx. 0.3 kg12 and 20 W: approx. 0.5 kgCoil with cableCoil with DIN plugsTypeEVR 25EVR 32EVR 40ConnectionSolderH 1 H 2 H 3 H 4 L L 2cableconnectionCoil withL 3Coil withDINconnectionL 4Coil withterminal boxL 5 max.10 W 12/20 Win. mm mm mm mm mm mm mm mm mm mm mm mm mm kg1 1 / 8 28 38 138 72 256 22 45 54 75 85 95 68 3.01 3 / 8 35 38 138 72 281 25 45 54 75 85 95 68 3.31 3 / 8 35 47 111 53 281 25 45 54 75 85 80 68 4.51 5 / 8 42 47 111 53 281 29 45 54 75 85 80 68 4.61 5 / 8 42 47 111 53 281 29 45 54 75 85 80 68 4.62 1 / 8 54 47 111 53 281 34 45 54 75 85 80 68 4.6BB 1 max.WeightwithcoilEVR (NC) 15 and 20, flange connectionCoil with cableCoil with DIN plugsWeight of coil10 W: approx. 0.3 kg12 and 20 W: approx. 0.5 kgWith terminal box coilWeight of flange setFor EVR 15: 0.6 kgFor EVR 20: 0.9 kgType H 1 H 2 H 3 H 4 L L 1 L 2 connectionCoil with cableL 3Coil with DINconnectionL 4Coil withterminal boxL 5 max. B B 1 max.10 W 12/20 Wmm mm mm mm mm mm mm mm mm mm mm mm mm kgEVR 15 19 86 19 49 125 68 45 54 75 85 80 68 1.2EVR 20 20 90 21 53 155 85 45 54 75 85 96 68 1.7Weightwith coilexcl.flanges© Danfoss A/S (AC-AKC / frz, 05 - 2008 DKRCCPDBB0A302-520H1275 23

Technical leafletSolenoid valves type EVR 2 → 40 − NC / NO24 DKRCCPDBB0A302-520H1275 © Danfoss A/S (AC-AKS / frz),, 05 - 2008