Danfoss EV250BW Data sheet

Data Sheet

Solenoid valve Type EV250BW

Servo operated with assist to open from 0 to 10 bar for drinking water applications

EV250BW 10,12,18 & 22 with assisted lift can operate from 0-10 bar dierential pressure. This 2/2-way valve program is especially to use in applications with low dierential pressure, but demanding moderate ow rates.

This valve type is designed with EPDM seal, lead free dezincication resistant Eco brass for drinking water applications.

• For water supply

• Houses and large apartments

• Kitchens and bathrooms

• Commercial buildings

• Industrial buildings

• Zoning

• Laundry

• Dishwashing

• Main inlet valves

• Machine and food processing

Features

• Designed for drinking water

• Clip on coil

• Ambient temperature: Up to 50 °C

• Coil enclosure: Up to IP67

• Water hammer damped

• Body material in Eco brass (lead free < 0,1%) and dezincication resistance.

• New generation EPDM sealings recommended for drinking water

AI315946479533en-000201

Features

EV250BW NC

EV250BW NO

Body material

Eco brass

DN [mm]

10 - 22

Connection

G3/8'' - G1''

Sealing material

EPDM

Function

NC

NO

Kv [m3/h]

2.5 - 7

2.5 - 5.2

Dierential pressure range [bar]

0 - 10

Temperature range [°C]

0 - 90

Solenoid valve, Type EV250BW

1 Portfolio overview

123456789

Coil

Armature

Closing spring

Valve plate

Pilot orice

Diaphragm

Main orice

Equalizing orice

Assisted lift

Solenoid valve, Type EV250BW

2 Function

2.1 Function NC

Coil voltage disconnected (closed)

When the supply voltage to the coil (1) is disconnected, the valve plate (4) is pressed down against the pilot orice (5) by the closing spring (3). The pressure across the diaphragm (6) is built up via the equalizing orice (8). The diaphragm closes the main orice (7) as soon as the pressure across the diaphragm is equivalent to the inlet pressure below, due to the larger diameter of the upper side and/or the tension of the closing spring (3). The valve will be closed as long as the voltage to the coil is disconnected.

Coil voltage connected (open)

When voltage is applied to the coil, the armature (2) and the valve plate (4) are lifted clear of the pilot orice (5). If there is a dierential pressure across the valve, the pressure above the diaphragm (6) drops as the pilot orice is larger than the equalizing orice. Therefore the diaphragm is lifted clear of the main orice (7). If there is no dierential pressure across the valve, the armature (2) draws the diaphragm (6) clear of the main orice (7) using the assisted lift (9). The valve will be open for as long as there is voltage to the coil.

Figure 1: Function NC

2.2 Function, NO

Coil voltage disconnected (valve is open)

When the supply voltage to the coil (1) is disconnected, the valve plate (7) are lifted clear of the pilot orice (9) if there is a dierential pressure across the valve. The pressure above the diaphragm (10) drops as the pilot orice is larger than the equalizing orice. Therefor the diaphragm is lifted clear of the main orice (12). If there is no dierential pressure across the valve, the opening spring (5) draws the diaphragm (10) clear of the main orice (12) using the assisted lift (8). The valve will be open for as long as there is no voltage to the coil.

Coil voltage connected (valve is closed)

When the supply voltage to the coil (1) is connected, the armature (3) will compress the opening spring (5) and the closing spring will push the spindle (4)/ valve plate down against the pilot orice (9). The pressure across the diaphragm (10) is built up via the equalising orice (11). The diaphragm closes the main orice (12) as soon as the pressure across the diaphragm is equivalent to the inlet pressure below, due to the larger diameter of the upper side and / or the tension of the closing spring (2). The valve will be closed as long as coil voltage is connected

123456789101112Coil

Closing spring

Armature

Spindle

Opening spring

Armature stop

Valve plate

Assisted lift

Pilot orice

Diaphragm

Equalising orice

Main orice

Solenoid valve, Type EV250BW

Figure 2: Function, NO

Danfoss

32U1460

ON

OFF

24h

Danfoss

32U9100

Solenoid valve, Type EV250BW

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

EPDM

Drinking water

Media temperature [°C]

EPDM

0 - 90 °C

Ambient temperature [°C]

Up to 50 °C

Kv value [m3/h]

DN10

2.5 m3/h

DN12

4 m3/h

DN18 NC

6 m3/h

DN18 NO

4.9 m3/h

DN22 NC

7 m3/h

DN22 NO

5.2 m3/h

Min. Opening dierential pressure [bar]

0 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]

15 bar

Viscosity [cSt]

Max. 50 cSt

Connection ISO228/1

Function

Dierential pressure range min. to max. [bar]

Coil type

BB AC, BY, BE AC, BG AC/DC, BZ, BO

BB/BE/BY DC

[Bar]

G3/8-G1

NC

0-10

0-6NO0-10

0-10

E

V250BW 18B NO

E

V250BW 22B NO

E

V250BW 10B NC/NO

E

V250BW 12B NC/NO

E

V250BW 22B NC

E

V250BW 18B NC

5

Solenoid valve, Type EV250BW

4 Product specication

4.1 Technical data

Table 1: Technical data

Dierential pressure range

Table 2: Dierential pressure range

Capacity diagram

Example, water: EV250BW 10 NC at 4,5 bar di. pressure: Approx: 5 m³/h

Figure 5: Capacity diagram

Type

EV250BW 10

EV250BW 12

EV250BW 18

EV250BW 22

Time to open [ms]

(1)

100

150

Time to close [ms]

(1)

100

Components

Materials

Specications

Valve body/cover

Eco brass

CW724R

Armature/armature stop

Stainless steel

W. no. 1.4105 / AISI 430FR

Armature tube

Stainless steel

W. no. 1.4306 / AISI 304L

Springs

Stainless steel

W. no. 1.4310 / AISI 301

O-ring

EPDM

Valve plate

EPDM

Diaphragm

EPDM

Type

Weight gross

valve body

without coil

L

B

B1 [mm] / Coil type

H

1

[kg]

[mm]

BB / BEBG[mm]

[mm]

EV250BW 10

0.65852.346689112.5

EV250BW 12

0.65852.346689112.5

EV250BW 18

0.8

90.558466892

18

EV250BW 22

1.190584668

69.3

22.3

Solenoid valve, Type EV250BW

Time to open/close

Table 3: Time to open/close NC and NO

(1)

The times are indicative and apply to water. The exact times will depend on the pressure conditions.

Material

Table 4: Material

4.2 Dimension and weight

Table 5: Dimension and weight: Eco brass NC and NO

Figure 6: Dimension



Solenoid valve, Type EV250BW

4.3 Mounting

Figure 7: Mounting angle

ISO228/1 connection

Orice

Kv value

Seal material

Function

[mm]

[m3/h]

EPDMNCNO

G 3/8102.5

EPDM

132U2450

132U2451

G 1/2

124EPDM

132U2452

132U2453

G 3/4

18

6

EPDM

132U2454

4.9

EPDM

132U2455

G 1

22

7

EPDM

132U2456

5.2

EPDM

132U2457

Type

Tambient

Supply voltage

Voltage

variation

Frequency

Control

Power consumption

Code no.

[°C]

[V]

[Hz]

[W]

[VA]

BB024AS

-40 – 80

24

-15%, +10%

50

NO, NC1119

018F7358

BB230AS

-40 – 80

220 - 230

-15%, +10%

50

NO, NC1119

018F7351

BB012DS

-40 – 5012±10%

DC

NC, NO, UN

(Latching)

13

018F7396

BB024DS

-40 – 5024±10%

DC

NC, NO, UN

(Latching)

16

018F7397

Type

Tambient

Supply voltage

Voltage variation

Frequency

Control

Power

consumption

Code no.

[°C]

[V]

[Hz]

[W]

BE240CS

-25 – 55

208 - 240

±10%60NC, NO

4

018F6783 208 - 240

±10%50NC, NO

4

Solenoid valve, Type EV250BW

5 Ordering

5.1 Parts program

Table 6: Eco brass, valve body NC and NO

5.2 Accessories

Coil

Figure 8: BB, clip on

Table 7: BB, clip on

EEC controller and coil unit

Figure 9: EEC controller and coil unit

Table 8: EEC controller and coil unit

Cable plug size

Description

Code no.

DIN 18

Cable plug IP67

042N1256

Applications

Voltage

To use with coil

Ambient

temperature

Code nuumber

[V AC]

[°C]

External adjustable timings from 1 to 45 minutes with 1 to 15 seconds drain open. With manual override (test button). Electrical connection DIN 43650 A / EN 175 301-803-A

24 - 240

BB

-10 - 50

042N0185

Type

Actuatorkit NC

Actuator kit NO

EV250BW DN 10 G 3/8

132U8012

132U8017

EV250BW DN 12 G 1/2

132U8012

132U8017

EV250BW DN 18 G 3/4

132U8018

132U8019

Solenoid valve, Type EV250BW

Cable plug

Figure 10: Cable plug

Table 9: Cable plug

Universal electronic multi-timer, type ET20M

Figure 11: Type ET20M

Table 10: Type ET20M

Spare part kits

Table 11: Spare part kits DN10-22, Eco brass and EPDM sealing

1.

2.

3.

4.

5.

6.

7.

8.

1.

2.

3.

Type

Actuatorkit NC

Actuator kit NO

EV250BW DN 22 G 1

132U8018

132U8019

1

3

4

5

6 7 8

2

Danfoss

80Z897

1

2

3

Danfoss

80Z891

O-ring coil 4 x screws Armature tube O-ring 4 x screws for cover Armature + spring Assist Spring Diaphragm

O-ring coil 4 x screws Complete NO unit with cover, NO actuator, o-ring, 4 screws, diaphragm, assist spring

Solenoid valve, Type EV250BW

1002

CERTIFIERAD

356

DTI

Solenoid valve, Type EV250BW

6 Certicates, declarations and approvals

6.1 Directives, approvals and certicates

In accordance with

• Low Voltage Directive 2014/35/EU

◦ EN60730-1: 2011 ◦ EN60730-2-8: 2002

• Pressure Equipment Directive 2014/68/E

• RoHS Directive 2011/65/EU

◦ Including amendment 2015/863/EU

6.2 Drinking water approvals

Figure 12: Rise

Valves are certied by RISE, notied body 1002. Valid in Denmark and Sweden. In accordance with Boverket Building Regulations (BBR 21, 2014-06-17) Certicate number SCO155-18

Figure 13: SINTEF

Valves are certied by SINTEF. Valid in Norway. In accordance with NKB Product rules nr. 13, pkt. 3.2 – 3.6 :

• NT VVS 100, pkt. 6.4.2 & 6.4.8

• EN ISO 6509

Figure 14: DTI

Inspection by DTI

Figure 15: ACS

Valves are certied by Carso according to ACS guidelines, Circulaire 2002/571.

Figure 16: PZH

Hygenic certicate B-BK-60210-1275/19. Issued by Polish National Institute of Public health (PZH).

Wetted materials in accordance with 4MS (4 member states Germany, Holland, France and UK), DVGW, KTW and W270.

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Danfoss EV250BW Data sheet

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Frequently Asked Questions

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