Danfoss EV225B Data sheet

Data Sheet

Solenoid valve Type EV225B

Servo diaphragm operated for steam applications

EV225B is a servo-operated 2/2-way solenoid valve for use in steam applications.

The design is based on a PTFE diaphragm concept, ensuring highly reliable function when used in connection with contaminated steam.

Each valve body is made of dezincication resistant brass and the valve seats are made of stainless steel.

This ensures a long life even in when used with highly aggressive steam.

Features and versions

• Specically designed for steam applications, 160 °C or 185 °C

• Clip on coil

• Ambient temperature: up to 40 °C

• Coil enclosure: up to IP65

• EV225B used with BQ coil: AC voltage up to 185 °C

• EV225B used with BN coil: DC voltage up to 160 °C

• EV225B used with BB coil: AC voltage up to 160 °C DC voltage up to 140 °C

• Connection: ISO 228/1

AI250386497491en-000701

Features

EV225B

Body material

DZR brass

DN [mm]

6-25

10-25

Connection

G1/4'' - G1''

G1/2''-G1''

Sealing material

PTFE

Function

NCNCNC

Kv [m3/h]

0.9 - 6.0

2.2 - 6.0

Dierential pressure range [bar]

0.2 - 10

0.2-10

0.2 - 5

Temperature range [°C]

0 - 185

0 - 160

Solenoid valve, type EV225B

1 Portfolio overview

Table 1: Portfolio overview

1.2.3.

4.5.6.7.8.

EV225B 6 – EV225B 10

EV225B 15 – EV225B 25

Coil

Valve plate

Pilot orice

Armature spring

Equalizing orice

Diaphragm

Main orice

Closing spring

Solenoid valve, type EV225B

2 Functions

2.1 Function NC

Coil voltage disconnected (closed)

When the voltage is disconnected, the valve plate (2) is pressed down against the pilot orice (3) by the armature spring (4). The pressure across the diaphragm (6) is built up via the equalizing orice (5). The diaphragm/piston closes the main orice (7) as soon as the pressure across the diaphragm/piston 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 (3) is opened. As the pilot orice is larger than the equalizing orice (5), the pressure across the diaphragm (6) drops and therefore it is lifted clear of the main orice (7). 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.

Table 2: Function NC

Danfoss

32U1460

ON

OFF

24h

Danfoss

32U9100

Solenoid valve, type EV225B

3 Applications

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

Figure 1: 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 2: 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

PTFE

Steam 160°C or 185°C

Media temperature [°C] (Depending on which type of coil you used)

AC coil

0-185°C

DC coil

0-160°C

Ambient temperature [°C]

Max. 40 °C at a medium temperature of 185 °C

Kv value [m3/h]

DN6

0.9 m3/h

DN10

2.2 m3/h

DN15

3.0 m3/h

DN20

5.0 m3/h

DN25

6.0 m3/h

Min. Opening dierential pressure [bar]

0.2 bar

Max. Opening dierential pressure [bar]

Up to 10 bar

Max. working pressure [bar]

Up to 10 bar (Equal to max. dierential pressure)

Max. test pressure [bar]

25 bar (UL 429: 24.1 bar)

Viscosity [cSt]

Max. 50 cSt

Solenoid valve, type EV225B

4 Product specication

4.1 Technical data

Table 3: Technical data

Steam capacity diagrams

Example:

Capacity for EV225 10BD inlet pressure (p1) of 6 bar absolute, at dierential pressure at 1 bar. Approx. 100kg/h/80kW

Figure 3: Steam capacity diagrams

Connection ISO228/1

Coil type BQ AC

Coil type BN DC

Coil type BB AC

Coil type BB DC

[Bar]

G1/4 - G1

0.2 - 10

0.2 - 5

0.2 - 3.6

Main type

EV225B 6 – EV225B 25

Time to open [ms]

(1)

Max. 0.2 s

Time to close [ms]

(1)

Max. 0.2 s

Components

Materials

Specications

Valve body

DZR brass

Armature/armature stop

Stainless steel

W. no. 1.4105 / AISI 430FR

Spring

Stainless steel

W. no. 1.4306 / AISI 304L

Armature tube

Stainless steel

W. no. 1.4310 / AISI 301

Diaphragm

PTFE

Valve plate

PTFE

Valve seat

Stainless steel

External gaskets

O-ring: AFLAS

Type

LBH

H1H

2

Weight gross valve body

with coil BQ, BB

Weight gross valve body

with coil BN

[mm]

[kg]

EV225B 6 BD

6246981385

0.75

1.03

EV225B 10 BD

6246981385

0.72

1.00

EV225B 15 BD

81561021587

0.86

1.14

EV225B 20 BD

98721101892

1.4

1.68

EV225B 25 BD

106721172196

1.7

1.98

Solenoid valve, type EV225B

Dierential pressure range, NC

Table 4: Dierential pressure range

Time to open/close

Table 5: Time to open/close

(1)

The times are indicative. The exact times will depend on the pressure conditions.

Materials

Table 6: Materials

4.2 Dimension and weight

Table 7: Dimension and weight

Figure 4: Dimension

Solenoid valve, type EV225B

4.3 Mounting

Figure 5: Mounting angle

ISO228/1 connection

Orice

Kv value

Seal

material

Code no.

without coil

Code no. valve body with coil and power connector

[mm]

[m3/h]

PTFE

Coil type

BQ024CS 24 V 60 Hz 24 V 50 Hz

Coil type

BQ120BS

110-120 V 60 Hz

Coil type

BQ024 CS

208-240 V 60 Hz

230 V 50 Hz

Coil type

BN024DS

24V DC

G1/460.9

PTFE

032U3802

G3/8102.2

032U3803

G1/2102.2

032U3804

032U380416

032U380420

032U380431

032U380402

G1/2153.0

032U3805

032U380516

032U380520

032U380531

032U380502

G3/4205.0

032U3806

032U380616

032U380620

032U380631

032U380602

G1256.0

032U3807

032U380716

032U380720

032U380731

032U380702

Type

Tambient

Supply voltage

Voltage variation

Frequency

Power consumption

Approval

Code no.

[°C]

[V]

[Hz]

[W]

[VA]

BQ024CS

-40 – 40 24

-15%, 10%5010

17

018F4517

24

-15%, 10%609.0

16

BQ120BS

40 – 40

110 / 120

-15%, 6%6013.519018F4519

BQ240CS

-40 – 40

230

-15%, 6%5010

17

018F4511 208 / 240

-6%, 6%609.5

16

Solenoid valve, type EV225B

5 Ordering

5.1 Parts program

Table 8: DZR brass, valve body NC

5.2 Accessories

Coil

Coil type BQ AC Steam coil to 185 °C

Figure 6: Coil type BQ AC

Table 9: Coil type BQ AC Steam coil to 185 °C

Coil type BN DC Steam coils to 160 °C

Figure 7: Coil type BN DC

Type

Tambient

Supply voltage

Voltage

variation

Frequency

Power consumption

Approval

Code no.

[°C]

[V]

[Hz]

[W]

[VA]

BN024DS

-40 – 5024±10%DC20

018F6968

Type

T ambient

Supply voltage

Voltage variation

Frequency

Power consumption

Code no.

[°C]

[V]

[Hz]

[W]

[VA]19

BB024AS

-40 – 80

24

-15%, 10%5011

018F7358

BB115AS

-40 – 50

115

-15%, 10%501119018F7361

BB230AS

-40 – 80

220 / 230

-15%, 10%501119018F7351

BB240AS

-40 – 80

240

-15%, 10%501119018F7352

BB440CS

-40 – 80 400

±10%5014

24

018F7353

440

±10%601524BB024BS

-40 – 80

24

-15%, 10%601423018F7365

BB110CS

-40 – 50 110

±10%5015

28

018F7360

110

±10%6013

22

BB230CS

-40 – 50

220 / 230

±10%6013

24

018F7363

220 / 230

±10%5016

31

Type

T ambient

Supply voltage

Voltage

variation

Frequency

Power consumption

Code no.

[°C]

[V]

[Hz]

[W]

[VA]

BB012DS

-40 – 5012±10%DC14–018F7396

BB024DS

-40 – 5024±10%DC16–018F7397

Cable plug size

Description

Code no

DIN 18

Cable plug IP67

042N1256

Solenoid valve, type EV225B

Table 10: Coil type BN DC Steam coils to 160 °C

Coil type BB AC Steam coils to 160 °C

Figure 8: Coil type BB AC

Table 11: Coil type BB AC Steam coils to 160 °C

Type BB DC Steam coils to 140 °C

Table 12: Type BB DC Steam coils to 140 °C

Cable plug

Figure 9: Cable plug

Table 13: Cable plug

1.

2.

3.

4.

Type

Voltage

Suitable for coil types

Code no.

[V]

BA024A

24 - 240

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

042N0185

Type

Actuator/diaphragm kit

Sealing

PTFE

EV225B 6 – 10

032U3171

EV225B 15

032U3172

EV225B 20 – 25

032U3173

1

2

3

4

Armature with valve plate and spring Closing spring Diaphragm O-ring

Solenoid valve, type EV225B

Universal electronic multi-timer, Type ET 20 M

Figure 10: Type ET 20 M

Table 14: Universal electronic multi-timer, Type ET 20 M

Spare parts

Table 15: Actuator/diaphragm kit

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Danfoss EV225B Data sheet

Specifications and Main Features

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