Danfoss EVT Data sheet

Data Sheet

Solenoid Valve
Type EVT

EVT high pressure range is a direct or servo
operated solenoid valve specially designed to
t into CO2 transcritical refrigeration systems.

They can be applied in following applications:

• EVT 1.2 direct operated for oil return, pressure
equalization/relief control, high pressure hot
gas bypass/dump and hot gas defrost.

• EVT 2.0 and 3.0 servo operated for high
pressure hot gas bypass/dump and hot gas
defrost application.

EVT valves and coils are sold separately.

Features

• Direct and servo operated mini piston
solenoid valve with compact construction

• Simple and fast mounting of Danfoss Clip-on
coil

• Designed for media temperature up to 150°C

• Working pressure up to 140 bar with standard
coils

• Copper solder connections for brazing

• Stainless steel connections for Swagelok

ttings

• Body material in ECO brass (lead free < 0.1%)

• Robust design ensures long lifetime

• Supplied in version normally closed (NC)

• In accordance with

◦ RoHS II
◦ REACH
◦ LVD and PED

AI383432144920en-000101

Features

EVT

EVT

Connection

Copper

Stainless steel

DN [mm]

1.2 – 3.0

1.2 – 3.0

Connection

ODF 3/8”

ODM 6mm

Max. working pressure [bar]

140

140

Function

NC

NC

Solenoid Valve, Type EVT

Portfolio overview

Table 1: Portfolio overview

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Valve housing

Cover

Armature assembly

Gasket

Armature spring

Seat plate

Coil O-ring

Solenoid Valve, Type EVT

Functions

Normally closed (NC)

Direct operated

EVT 1.2 is direct operated. This means that the valve can operate at 0bar dierential pressure.

Coil voltage disconnected (closed):

When the voltage to the coil is disconnected, the armature (3) with the seat plate (6) is pressed down against the
valve orice by the closing spring (5) and inlet pressure. The valve will be closed for as long as the coil is
disconnected.

Coil voltage connected (open):

The valve opens directly for full ow when the voltage is applied to coil, the armature (3) with seat plate is lifted
clear of the valve orice. The valve will be open for as long as there is voltage to the coil.

Figure 1: Direct operated

Servo operated

EVT 2.0 and 3.0 is servo operated piston solenoid valves. The servo piston principle results in a fast operating and
compact valve that can open against a high dierential pressure.

Coil voltage disconnected (closed):

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Valve housing

Cover

Armature assembly

Gasket

Armature spring

Seat plate

Piston assembly

Guide pin

Coil O-ring

Solenoid Valve, Type EVT

When the coil is disconnected, the armature (3) with seat plate (6) is pressed down against the pilot orice by the
armature spring (8). Via the equalization orice in the piston (5), the pressure above the piston rises to the same
value as the inlet pressure and the piston closes the main orice. The valve will be closed for as long as the coil is
disconnected.

Coil voltage connected (open):

When current is applied to the coil, the armature (3) is drawn up into the magnetic eld and opens the pilot orice.
This relieves the pressure above the piston (7), i.e. the space above the piston becomes connected to the outlet side
of the valve. The dierential pressure between inlet and outlet sides then presses the piston away from the main
orice and now the main orice opens for full ow. Therefore, a minimum dierential pressure of 2 bar is necessary
to open the valve and 0.4 bar to keep it open.

Figure 2: Servo operated

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Refrigerants

R744 (CO2)

Oil

POE 60cST, 85cST (piston compressors);
PAG 68cST, 100cST (piston and rotary compressors)

Media temperature range

-40 - 150 °C / -40 - 302 °F

Max. working pressure (PS/MWP)

140 bar / 2030.5 psi

Solenoid Valve, Type EVT

Media

Table 2: Media

 NOTE:

• Media temperature of 0°C or higher when operating the valve for oil management lines.

• Danfoss recommends that a suitable lter or lter drier (< 40 microns) should be installed ahead of each solenoid
valve to keep scale, solder material and other foreign dirt and particles out of the valve.

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A

1

2

3

4

5

6

7

1

2

3

4

5

6

7

MOPD and MWP

Country of origin

Point of contact

Serial number

Code number

Media temperature

Ambient temperature

068F0611
Max. media TEMP 150 °C / 302 °C
Max. AMB TEMp 50 °C / 122°F
MOPD 110 bar / 1595, 4psi PS 140 / SWP 2030, 5
MADE IN DENMARK
Danfoss A/S 6430 Nordborg Denmark
068F0611F171D00001

A (2 : 1)

Type

Opening dierential pressure with standard coil ΔP [bar]

Min.

Max. (=MOPD) liquid

220V-230V 50Hz / 018F6176

EVT 1.2 NC

0

110

EVT 2.0 NC

2

110

EVT 3.0 NC

2

110

Pos. no.

Descriptions

Materials

1

Valve housing

ECO Brass

2

Cover

Stainless steel

3

Armature assembly

Stainless steel

4

Gasket

Copper

5

Spring

Stainless steel

6

Seat plate

PEEK7Piston

ECO Brass

8

Guide pin

Stainless steel

Solenoid Valve, Type EVT

Product specication

Technical data

Ambient temperature

-40°C to 50°C

Max. working pressure

140 bar with copper connections and stainless steel connections.

Flow capacity

• For Kv values please refer to the tables in Ordering.

• The Kv value of the water ow in [m3/h] at a pressure drop across valve of 1 bar, ρ = 1000 kg/m3.

Opening dierential pressure range

Table 3: MOPD

 NOTE:

EVT 2.0 and 3.0 need 0.4 bar to keep open and can’t be used as relief valve if the dierential pressure is lower than

0.4 bar.

Valve selection based on capacity calculation

As for extended capacity calculations and valve selection based on capacities and refrigerants, please refer to
Coolselector®2. Rated and extended capacities are calculated with Coolselector®2 calculation engine to ARI
standards with the ASEREP equations based on laboratory measurements of selected valves.

Identication

Figure 3: Identication

Figure 4: Identication

Materials

Table 4: Materials

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8

0

m

m

[

3

,

2

i

n

]

4

3

m

m

[

1

,

7

i

n

]

15Ø mm

[0,6 in]

51 mm

[2 in]

1

3
Ø

m

m

[

1

/

2

i

n

]

6

5

m

m

[

2

,

6

i

n

]

17 mm

[0,7 in]

15 mm

[0,6 in]

6

5

m

m

[

2

,

9

i

n

]

51 mm

[2 in]

15 mm

[0,6 in]



6

m

m

[

1

/

4

i

n

]

8

0

m

m

[

3

,

2

i

n

]

17 mm
[0,7 in]

4

3

m

m

[

1

,

7

i

n

]

15 mm

[0,6 in]

Type

Net weight without coil

[kg]

EVT 1.2

0.22 kg

EVT 2.0

0.24 kg

EVT 3.0

0.24 kg

Solenoid Valve, Type EVT

Dimension and Weight

Figure 5: EVT ODF

Figure 6: EVT ODM

Table 5: Dimension and weight



NOTE:

Net weight of coil 018F6176 is approx. 0.27 kg.

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Type

Connection size

Kv value [m3/h]

Code no.

Packing

ODF [in]

ODM [mm]

Copper

Stainless Steel

EVT 1.2

3/8

-

0.05

068F0600

Multi-pack

068F0625

I-pack

-

6

068F0622

Multi-pack

068F0626

I-pack

EVT 2.0

3/8

-

0.1

068F0601

Multi-pack

068F0627

I-pack

-

6

068F0621

Multi-pack

068F0628

I-pack

EVT 3.0

3/8

-

0.23

068F0611

Multi-pack

068F0629

I-pack

-

6

068F0620

Multi-pack

068F0630

I-pack

Type

Tambient

Supply voltage

Voltage variation

Frequency

Power consumption

Code no.

[°C]

[V]

[Hz]

BE230AS

-40T50
220

-15%, +10%

50

11 W

018F6176

230

-15%, +10%

50

12 W

Solenoid Valve, Type EVT

Ordering

Parts program

Coils

Table 6: Coils

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1.

2.

A
B

1.

2.

A
B
C
D
E

Type

EVT 1.2

EVT 2.0 & 3.0

Seal Kit

068F0697

068F0697

Service Kit

068F0698

068F0699

1

2

B

A

Danfoss

068F0600_EX

1

2

A

B

C

D

E

Danfoss

068F0611_EX

Seal kit contains:

Coil O-ring
Gasket

Service kit contains:

Spring
Armature

Seal kit contains:

Coil O-ring
Gasket

Service kit contains:

Spring
Spring
Guided pins
Armature
Piston

Solenoid Valve, Type EVT

Accessories

Spare parts kits

Table 7: Spare part kits

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File name

Document type

Document topic

Approval authority

033F0688

EU declaration

LVD, EMC

Danfoss

033F1035

EU declaration

PED

Danfoss

Solenoid Valve, Type EVT

Certicates, declarations and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have
some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local
Danfoss representative if you have any questions.

Valid approvals

Table 8: Valid approvals

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