Danfoss EV260B Data sheet

Data Sheet

Solenoid valve
Type EV260B

Proportional servo operated for water, brine and oil regulation

EV260B is a proportional (modulating) servo­operated 2-way solenoid valve with
connections from 1/4” to 3/4”. Through stepless
regulation of the coil current, the armature can
be placed in any position in the armature tube,
thus setting the valve to any position between
fully closed and fully open. The valve is fully
open when the coil current has reached its
maximum value.

Features and versions

• For water, oil and similar neutral liquids

• Linear characteristic throughout the
regulation range

• Closes on power failure (fail-safe function)

• Clip on coil

• Ambient temperature: Up to 50 °C

• Coil enclosure: Up to IP67

• Standard 4 – 20 mA or 0 – 10 V DC pilot signal

AI178086429374en-000802

Features

EV260B

Body material

Brass

DN [mm]

6-20

DN [inch]

1/4-3/4

Connection G

G3/8'' - G1''

Connection NPT

NPT 1/4-3/4

Sealing material

PTFE

Function

NC

Kv [m3/h]

0.8-5

Cv [Gal/min]

0.9-5.8

Dierential pressure range [bar]

0.5-10

Dierential pressure range [psi]

7-156

Temperature range [°C]

-10-80

Temperature range [°F]

14-176

Solenoid valve, Type EV260B

1 Portfolio overview

Table 1: Portfolio overview

© Danfoss | Climate Solutions | 2022.02 AI178086429374en-000802 | 2

1.2.3.4.5.6.Coil

Closing spring

Closing spring

Pilot orice

Diaphragm

Terminal box

Solenoid valve, Type EV260B

2 Functions

Proportional regulation of the opening and closing of the EV260B valves is achieved through stepless regulation of
the coil current and thus of the pulling force of the solenoid coil.

PWM (Pulse width Regulation) is recommended, to have the best regulation and avoid hysteresis.

When the coil current is increased, the pulling force of the coil (1) will at a certain point exceed the counteracting
spring force of the closing spring (2). The armature (3) moves up, opening the pilot orice (4) in the diaphragm (5),
which due to the servo eect follows the armature’s movement.

The valve is fully open when the coil current has reached its maximum value.

Through stepless regulation of the coil current the armature can be placed in any position in the armature tube, and
the valve thus set to any position between closed and open.

The eective coil current range for EV260B proportional valves without signal converter is approx. 300 – 600 mA.

The EV260B valves are also available with a signal converter built in the coil’s terminal box (6). The signal converter’s
output terminals are connected to the solenoid coil.

The signal converter regulates the coil current so that it is proportional to the input signal (pilot signal).

• The pilot signal may be a

◦ 0 – 10 V DC voltage signal or a
◦ 4 – 20 mA current signal

 NOTE:

The EV260B is not optimal as shut of valve at low dierential pressures and when PTFE seal can be damaged by
small particles.

Figure 1: Function NC

© Danfoss | Climate Solutions | 2022.02 AI178086429374en-000802 | 3