Danfoss EV210B, EV210BW Data sheet

Data Sheet

Solenoid valve

Type EV210B and EV210BW

Direct-operated 2/2-way solenoid valves for universal use.

EV210B and EV210BW covers a wide range of direct-operated 2/2-way solenoid valves for universal use.

EV210B and EV210BW are a very robust valves program with high performance and can be used in all kind of tough working conditions in demanding industrial applications such as control and closage.

Features and versions:

• For water, oil, compressed air and similar neutral media

• Clip on coil

• Ambient temperature: up to 80 °C

• Coil enclosure : up to IP67

• The valves can be used for vacuum

• EV210B brass version for water, oil, compressed air and similar neutral media

• EV210B stainless steel version for neutral and aggressive liquids and gasses

• EV210BW brass and Stainless steel versions, EPDM seal and WRAS approved for drinking water

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Solenoid valve, type EV210B and EV210BW

1 Portfolio overview

Table 1: Portfolio overview

Features	EV210B	EV210BW	EV210B	EV210BW

Body material	Brass	Brass	Stainless steel	Stainless steel

DN [mm]	1.5 – 25	1.5-4.5	2-3	1.5-4.5

Connection	G 1⁄8 – G 1	G1⁄8-G3⁄8	G1⁄8-G1⁄4	G1⁄4
Sealing material	EPDM, FKM	EPDM	EPDM	EPDM

Function	NC, NO	NC	NC	NC

Kv [m3/h]	0.08-8.00	0.08-0.55	0.15-0.30	0.08-0.55
Di€erential pressure range [bar]	0 – 30	0-16	0-30	0-16

Temperature range [°C]	-30 – 120	-30-90	-30-120	-30-90

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Solenoid valve, type EV210B and EV210BW

2 Functions

2.1 Function NC

Coil voltage disconnected (closed):

When the voltage to the coil (5) is disconnected, the armature (2) with the valve plate (3) is pressed down against the valve orifice (4) by the closing spring (1) and the medium,s 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(5), the armature (2) with the valve plate (3) is lifted clear of the valve orifice (4).

The valve is now open for unimpeded flow and will be open for as long as there is voltage to the coil.

Figure 1: Function NC

	1
	2
5	3
5
4
2.2 Function NO

1Closing spring

2Armature

3Valve plate

4Valve orifice

5Coil

Coil voltage connected (open):

When the voltage to the coil(8) is disconnected, the valve orifice (5) is open, the opening spring (2) lifting the spindle (3) with the valve plate (4) clear of the orifice.

The valve will be open for as long as the supply voltage to the coil is disconnected.

Coil voltage disconnected (closed):

When voltage is applied to the coil (8), the magnetic field draws the valve,s armature (1) down to touch the fixed base(7). The spindle (3) with the valve plate (4) is now pressed down against the valve orifice (5) by the closing spring (6).

The valve will be closed for as long as there is voltage to the coil.

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Solenoid valve, type EV210B and EV210BW

Figure 2: Function NO

	1
	2
	3
	4
8	5
8
7
6

1Armature

2Opening spring

3Spindle

4Valve plate

5Valve orifice

6Closing spring

7Fixed base

8Coil

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Solenoid valve, type EV210B and EV210BW

3 Applications

It is recommended to use a filter in front of the valve. Recommended filter 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/off

OFF

24h

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 dezincification and corrosion

•Above 25 °C media temperature avoid stagnant water inside the valve to avoid dezincification and corrosion attack

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