Danfoss EV224B Data sheet

Data Sheet

Solenoid valve Type EV224B

Servo operated valve for air with oil for high pressure applications

EV224B for compressed air, is a high pressure indirect servo-operated 2/2-way solenoid valve with working pressure up to 40 bar, medium temperature up to 60 °C and available in NC and NO versions.

Built-in pilot lter as standard, replaceable equalizing orice, enclosures up to IP67 (depending on coil) ensure a reliable and satisfactory function.

Features

• For compressed air and compressed air with mineral oil

• Clip on coil

• Ambient temperature: Up to 60 °C

• Coil enclosure: Up to IP67

• Built in lter for protection of pilot system

AI260151589548en-001301

Features

EV224B

Body material

Brass

DN [mm]

15 - 25

Connection

G

1

⁄2'' - G1''

Sealing material

NBR

Function

NC, NO

Kv [m3/h]

4 - 11

Dierential pressure range [bar]

0.3 - 40

Temperature range [°C]

-10 - 60

Solenoid valve, Type EV224B

1 Portfolio overview

Table 1: Portfolio overview

7

DANFOSS

32U846_11

1.2.3.4.5.6.7.

Coil

Armature spring

Valve plate

Pilot orice

Diaphragm

Main orice

Equalizing orice

Solenoid valve, Type EV224B

2 Functions

2.1 Function NC

Coil voltage disconnected (closed)

When the voltage is disconnected, the valve plate (3) is pressed down against the pilot orice (4) by the armature spring (2). The pressure across the diaphragm (5) is built up via the equalizing orice (7). The diaphragm closes the main orice (6) as soon as the pressure across the diaphragm is equivalent to the inlet pressure. The valve will be closed for as long as the voltage to the coil is disconnected.

Coil voltage connected (open)

When voltage is applied to the coil (1), the pilot orice (4) is opened. As the pilot orice is larger than the equalizing orice (7), the pressure across the diaphragm (5) drops and therefore it is lifted clear of the main orice (6). The valve

is now open for unimpeded ow and will be open for as long as the minimum dierential pressure across the valve is maintained, and for as long as there is voltage to the coil.

Figure 1: Function NC

2.2 Function NO

Coil voltage disconnected (open)

When the voltage to the coil (2) is disconnected, the pilot orice (4) is open. As the pilot orice is larger than the equalizing orice (7), the pressure across the diaphragm (5) drops and therefore it is lifted clear of the main orice (6). The valve will be open for as long as the minimum dierential pressure across the valve is maintained, and for as long as the voltage to the coil is disconnected.

Coil voltage connected (closed)

When voltage is applied to the coil, the valve plate (3) is pressed down against the pilot orice (4). The pressure across the diaphragm (5) is built up via the equalizing orice (7). The diaphragm closes the main orice (6) as soon as the pressure across the diaphragm is equivalent to the inlet pressure. The valve will be closed for as long as there is voltage to the coil.

DANFOSS

32U956

7

1.2.3.4.5.6.7.

Coil

Armature spring

Valve plate

Pilot orice

Diaphragm

Main orice

Equalizing orice

Solenoid valve, Type EV224B

Figure 2: Function NO

Danfoss

32U1460

ON

OFF

24h

Danfoss

32U9100

Solenoid valve, Type EV224B

3 Applications

It is recommended to use a lter in front of the valve. Recommended lter 50 mesh (297 microns).

Figure 3: Filter

In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.

Figure 4: Exercise: Valve on/o

To minimize scaling, and corrosion attack it is recommended that the water passing the valve have the following values:

• Hardness 6-18 °dH to avoid scaling (chalk / lime stone build up).

• Conductivity 50 – 800 µS/cm to avoid brass dezincication and corrosion.

• Above 25°C media temperature avoid stagnant water inside the valve to avoid dezincication and corrosion attack.

Media

NBR

For compressed air and compressed air with mineral oil

Media temperature [°C]

NBR

-10 - 60 °C

Used with synthetic oils, and with media temperature between 40 – 60 °C, life time can be reduced.

Ambient temperature [°C]

Up to 60 °C

Kv value [m3/h]

DN15

4 m3/h

DN20

8 m3/h

DN25

11 m3/h

Min. Opening dierential pressure [bar]

0.3 bar

Max. Opening dierential pressure [bar]

G1/2

40 bar

G3/4

35 barG133 bar

Max. working pressure [bar]

G1/2

40 bar

G3/4

35 barG133 bar

Max. test pressure [bar]

G1/2

60 bar

G3/4

53 barG150 bar

Min. burst pressure acc. EN12516 [bar]

G1/2

154 bar

G3/4

142 bar

G1

134 bar

Viscosity [cSt]

Max. 50 cSt

Components

Materials

Specications

Valve body

Brass

W.no. 2.0402

Armature

Stainless steel

W.no. 1.4105 / AISI 430FR

Armature tube

Stainless steel

W.no. 1.4306 / AISI 304L

Armature stop

Stainless steel

W.no. 1.4105 / AISI 430FR

Diaphragm valve cone

Stainless steel

W.no. 1.4404 / AISI 316L

Springs

Stainless steel

W.no. 1.4310 / AISI 301FR

0-rings

NBR

Valve plate

NC: NBR / NO: PTFE

Diaphragm

NBR

Type

L

[mm]B[mm]

B

1

[mm] Coil type

H

[mm]

H

1

[mm]

Weight without coil

[kg]

BB / BE

BG

EV224B 15805246689915

0.8

EV224B 2090584668

103181.0

EV224B 25

109704668113221.4

Solenoid valve, Type EV224B

4 Product specication

4.1 Technical data

Table 2: Technical data

Materials

Table 3: Materials

4.2 Dimension and weight

Table 4: Dimension and weight, NC and NO

Danfoss

32U1787.10

Danfoss

32U1788.10

Solenoid valve, Type EV224B

Figure 5: Dimension

4.3 Mounting angle

Figure 6: Mounting angle

ISO228/1 connection

Orice

Kv value

Seal material

Function

[mm]

[m3/h]

NBRNCNO

G1/2

15

4

NBR

032U8360

032U8361

G3/4

208032U8362

032U8363G12511032U8364

032U8365

Coil

Type

Power consumption

Enclosure

Features

BB, clip on

AC: 11 – 16 W

DC: 13 – 16 W

IP00 with spade connector

IP20 with protective cap, IP67

with cable plug

BR, clip on

12 - 14 W AC

16 W DC

IP00 with spade connector

IP20 with protective cap, IP67

with cable plug

Design for marine application

BE, clip on

AC: 11 – 17 W

DC: 13 – 15 W

IP67

With terminal box

BG, clip-on

AC: 11 – 16 W

DC: 16 – 20 W

IP67

With terminal box

Cable plug size

Description

Code no

DIN 18

Cable plug IP67

042N1256

Solenoid valve, Type EV224B

5 Ordering

5.1 Parts program

Table 5: Brass, valve body NC and NO

5.2 Accessories

Coils

Table 6: Below coils can be used with EV224B

Cable plug

Figure 7: Cable plug

Table 7: Cable plug

Application

Voltage

[V AC]

To use with coil

Code no.

BA024A

24 - 240

AL, AM, AS, AZ, BA, BD, BB

042N0185

Solenoid valve, Type EV224B

Universal electronic multi-timer, Type ET20M

Figure 8: Universal electronic multi-timer, type ET20M

Table 8: Universal electronic multi-timer, type ET20M

1.

2.

3.

4.

5.

6.

7.

8.

1.

2.

3.

4.

5.

6.

7.

1.

2.

3.

Type

Actuator kit NC

Actuator kit NO

Diaphragm kit NC/NO

(1)

Sealing

NBR

FKM

EV224B 15

032U6156

032U6157

032U8118

EV224B 20

032U6158

032U6159

032U8119

EV224B 25

032U6160

032U6161

1

2

3

4

5

6

7

8

Danfoss

80Z811

1

2

3

4

5

6

7

Danfoss

80Z812

1

2

3

Danfoss

80Z813

O-ring for coil Armature tube assembly Armature with valve plate and spring O-ring for the armature tube 2x O-rings for the equalizing orice Closing spring Diaphragm 2 x O-rings for the pilot system

O-ring for coil NO actuator unit O-ring for the armature tube 2x O-rings for the equalizing orice Closing spring Diaphragm 2 x O-rings for the pilot system

Closing spring Diaphragm 2 x O-rings for the pilot system

Solenoid valve, Type EV224B

Spare part kits

Table 9: Spare part kits

(1)

FKM spare part kit for synthetic oil

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Find the technical documentation you need to get your project up and running. Get direct access to our ocial collection of data sheets, certicates and declarations, manuals and guides, 3D models and drawings, case stories, brochures, and much more.

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Danfoss EV224B Data sheet

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