Industrial solenoid valves

  • Overview
  • Documents
  • Highlighted products
  • Support
  • Learning
  • Case studies
  • Articles
  • FAQ

Efficiently controlling fluids

Danfoss offers an exceptionally wide range of high performance solenoid valves, available in direct-operated, servo-operated and assisted lift versions. An easy, economical way to control and regulate fluids and gases. Danfoss solenoid valve bodies and electrical coils are normally supplied separately and then combined, but the valves are also available as complete units if required.

Solenoid valves overview

Test solenoid coils easily with Magnetic Tool

Ensuring that a solenoid valve coil is working properly, or detecting a faulty one, is an important step in many repair or installation projects.

We offer a general B valve series with a high capacity and the A series is more economic and compact. Danfoss solenoid valves are assembled quickly and simply without tools, providing optimum product flexibility and availability. A coil can be replaced if needed without stopping or draining the system.

Applications for solenoid valves

Our solenoid valve program includes valves for air, steam, oil, and gas, suiting a number of industrial applications that require high performance in these and other applications:

  • Laundry and dry-cleaning equipment
  • Industrial washing equipment
  • Autoclaves/sterilizers
  • Compressors and vacuum pumps
  • Plastic moulding machinery
  • Steam boilers
  • Food processing machinery
  • Sprinklers and fire fighting systems
  • Dentist equipment
  • Coffee machines
  • Boilers
Solenoid valve x-ray - Danfoss

Solenoid valve selector

The tool is intended to make it easy for installers and end-users to specify the correct industrial solenoid valves for a range of standard applications.

Drinking water solenoid valves - Danfoss

New solenoid valves for drinking water

WRAS and RISE approved solenoid valves ensure your compliance. Danfoss solenoid valves are the clever choice for installers and the safe choice for drinking water.

Features and benefits

Clip-on coil

Coil range up to IP67

Best water hammer damping

Long lifetime and high
performance

Insensitive to dirt

Broad range and customized solutions

Fluid controls brochure - Danfoss

Protect your system - Hammer your costs

Solenoid, angle seat and thermostatic valves - a fluid control product overview.

Documents

Documents
Type Name Language Valid for Updated Download File type
Brochure Fluid Controls overview Polish Poland 23 Mar, 2022 536.4 KB .pdf
Brochure Fluid Controls overview Finnish Finland 21 Dec, 2023 631.5 KB .pdf
Brochure Fluid Controls overview Korean South Korea 23 Mar, 2022 545.9 KB .pdf
Brochure Fluid Controls overview English United States 23 Mar, 2022 410.8 KB .pdf
Brochure Fluid Controls overview Spanish, Castilian Spain 23 Mar, 2022 509.6 KB .pdf
Brochure Fluid Controls overview Danish Denmark 14 Feb, 2024 2.5 MB .pdf
Brochure Fluid Controls overview German Germany 23 Mar, 2022 539.9 KB .pdf
Brochure Fluid Controls overview Italian Italy 09 Oct, 2024 2.4 MB .pdf
Brochure Fluid Controls overview Chinese (CN) China 23 Mar, 2022 690.4 KB .pdf
Brochure Fluid Controls overview French France 23 Mar, 2022 509.3 KB .pdf
Brochure Fluid Controls overview English Multiple 14 Feb, 2024 2.4 MB .pdf
Brochure Fluid Controls overview Swedish Sweden 14 Feb, 2024 2.6 MB .pdf
Brochure Fluid Controls overview Portuguese Brazil 23 Mar, 2022 502.1 KB .pdf
Brochure Fluid Controls Overview Ukrainian Ukraine 13 Sept, 2023 593.6 KB .pdf
User guide How to use solenoid valves Danish Multiple 10 Nov, 2015 1.7 MB .pdf
User guide How to use solenoid valves Russian Multiple 10 Nov, 2015 1.8 MB .pdf
User guide How to use solenoid valves Spanish, Castilian Multiple 10 Nov, 2015 1.7 MB .pdf
User guide How to use solenoid valves Hungarian Multiple 22 Jan, 2016 3.1 MB .pdf
User guide How to use solenoid valves German Multiple 10 Nov, 2015 1.8 MB .pdf
User guide How to use solenoid valves Czech Multiple 10 Nov, 2015 1.8 MB .pdf
User guide How to use solenoid valves French Multiple 10 Nov, 2015 1.8 MB .pdf
User guide How to use solenoid valves Polish Multiple 29 Feb, 2016 3.1 MB .pdf
User guide How to use solenoid valves English Multiple 10 Nov, 2015 1.7 MB .pdf

Highlighted products

  • if (isSmallPicture) { EV310B, direct-operated 3/2-way solenoid valves danfoss; } else if (isBigColumns) { EV310B, direct-operated 3/2-way solenoid valves danfoss } else { EV310B, direct-operated 3/2-way solenoid valves danfoss }
    EV310B, direct-operated 3/2-way solenoid valves

    EV310B covers a wide range of direct-operated 3/2-way solenoid valves for universal use. EV310B is a real robust valve program with high performance and can be used in all kind of tough working conditions. Clip-on coils can not be used on EV310B.

  • if (isSmallPicture) { EV220A servo-operated 2/2-way solenoid valves; } else if (isBigColumns) { EV220A servo-operated 2/2-way solenoid valves } else { EV220A servo-operated 2/2-way solenoid valves }
    EV220A, servo-operated 2/2-way solenoid valves

    EV220A is a compact servo-operated 2/2-way solenoid valve program, especially designed for use in machines and equipment with limited space.

  • if (isSmallPicture) { EV250B 2/2-way assisted lift operated solenoid valve danfoss; } else if (isBigColumns) { EV250B 2/2-way assisted lift operated solenoid valve danfoss } else { EV250B 2/2-way assisted lift operated solenoid valve danfoss }
    EV250B, 2/2-way assisted lift operated solenoid valve

    EV250B with assisted lift can operate from zero and up to 10 bar differential pressure. This 2/2-way valve program is especially to use in closed circuits with low differential pressure, but demanding moderate flow rates. Valve body in dezincification resistant brass for ensuring a long life even in connection with aggressive steam media. EV250B is compatible with the broad Danfoss coil program with enclosures from IP00 up to IP67. Medium temperatures up to 140°C (low pressure steam).

  • if (isSmallPicture) { EV224B solenoid valve for Industrial Automation applications - Danfoss; } else if (isBigColumns) { EV224B solenoid valve for Industrial Automation applications - Danfoss } else { EV224B solenoid valve for Industrial Automation applications - Danfoss }
    EV224B, servo-operated 2/2-way solenoid valves for high pressure

    EV224B is a high pressure indirect servo-operated 2/2-way solenoid valve with working pressure up to 40 bar, medium temperature up to 60 °C and available in NC and NO versions.

  • if (isSmallPicture) { EV260B Danfoss; } else if (isBigColumns) { EV260B Danfoss } else { EV260B Danfoss }
    EV260B, servo-operated 2-way proportional solenoid valves

    EV260B is a proportional (modulating) servo-operated 2-way solenoid valve program 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 completely closed and completely open.

Support

Case studies

  • if (isSmallPicture) { Leading ballast water tank systems manufacturer Techcross eliminates line blockages with Danfoss solenoid valves; } else if (isBigColumns) { Leading ballast water tank systems manufacturer Techcross eliminates line blockages with Danfoss solenoid valves } else { Leading ballast water tank systems manufacturer Techcross eliminates line blockages with Danfoss solenoid valves }
    Leading ballast water tank systems manufacturer Techcross eliminates line blockages with Danfoss solenoid valves

    More than 90 percent of global trade is transported by sea. As a ship's cargo is unloaded and loaded, ballast water is pumped in and out to maintain the vessel's stability – this equates to around 12 billion tons every year.

Articles

FAQ

Troubleshooting solenoid valves – NC normally closed (armature tube is straight without dent)

Symptom: Solenoid valve does not open, no flow

  • If no voltage on coil:

        Check coil supply: Is supply activated?
        If not – supply or fuse may be defect.

  • If voltage on coil:

        Use a magnetic detector.
        Lift coil slightly and note whether it offers resistance against lifting.
        Eventually use a permanent magnet.
        NOTE: Never remove a coil with voltage applied for more than
        2 seconds – it may burn out.

Check to make sure the coil’s electrical requirements are the same as
the installation supply.

Check coil data. If necessary, replace coil with correct version.
Reduce differential pressure, e.g. by limiting inlet pressure.

Check valve body data and differential pressure. If necessary, replace
valve body with correct version.

Replace valve.

Clean orifice with needle or similar (max diameter 0.5 mm). Blow clean with compressed air. If necessary, replace defective component(s).

Clean pilot hole with a pin or needle.

Symptom: Solenoid valve partly opens, low flow

Check valve data, incl. differential pressure.
Replace valve with correct version.

Replace valve.

Clean diaphragm. If necessary, replace defective component(s).

Clean valve. If necessary, replace defective component(s).

Symptom: Solenoid valve does not close/partly closes

First lift coil slightly and note whether it offers resistance against lifting.
NOTE: Never remove a coil with voltage applied for more than
2 seconds – it may burn out

Clean orifice with needle or similar (max diameter 0.5 mm).
Blow clean with compressed air.
If necessary, replace defective component(s).

Check valve data.
Check pressure and liquid flow.
Check rest of installation.
Replace valve with a more suitable alternative.

Replace valve.

Check pressure and liquid flow.
Replace defective component(s).

Check correct installation of valve (see instruction/datasheet).

Symptom: Solenoid valve making noise

Hum caused by AC frequency can be removed by changing to coil
with rectifier.
Inspect and clean inside armature and armature tube.
Can also be dirt or armature or spring worn out / defect (Replace valve or parts).

See installation guide.
Pipes very long and pipe diameter too small.

Check valve data.
Check pressure and liquid flow.
Check for back pressure.
Check rest of installation.
Replace valve with a more suitable alternative.

Symptom: Coil burnt – melted; coil with voltage on

Check coil data. If necessary, change to correct coil type. Check wiring
diagram and wiring. Check maximum voltage variation:
Permissible voltage variation: +/- 10% for dual frequency;
DC and NO applications +10% / -15% for AC on single frequency
voltages.

Check coil data. If necessary, replace coil with correct version.
Reduce differential pressure, e.g. by limiting inlet pressure.

Check coil data and differential pressure and ambience temperatures
and media and check with coil and valve specifications.

Replace valve.

Clean armature tube and armature. If necessary, replace defective
component(s).

Troubleshooting solenoid valves – NO normally open (armature tube is straight with dent)

Symptom: Solenoid valve does not open, no flow

  • If no voltage on coil:

        Check coil supply: Is supply activated?
        If not – supply or fuse may be defect.

  • If voltage on coil:

        Use a magnetic detector.
        Lift coil slightly and note whether it offers resistance against    lifting.
        Eventually use a permanent magnet.
        NOTE: Never remove a coil with voltage applied for more than
        2 seconds – it may burn out.

Check to make sure the coil’s electrical requirements are the same as
the installation supply.

Check coil data. If necessary, replace coil with correct version.
Reduce differential pressure, e.g. by limiting inlet pressure.

Check valve body data and differential pressure. If necessary, replace
valve body with correct version.

Replace valve.

Clean orifice with needle or similar (max diameter 0.5 mm). Blow clean with compressed air. If necessary, replace defective component(s).

Clean pilot hole with a pin or needle.

Symptom: Solenoid valve partly opens, low flow

Check valve data, incl. differential pressure.
Replace valve with correct version.

Replace valve.

Clean diaphragm. If necessary, replace defective component(s) .

Clean valve. If necessary, replace defective component(s).

Symptom: Solenoid valve does not close/partly closes

First lift coil slightly and note whether it offers resistance against lifting.
NOTE: Never remove a coil with voltage applied for more than
2 seconds – it may burn out.

Clean orifice with needle or similar (max diameter 0.5 mm).
Blow clean with compressed air.
If necessary, replace defective component(s).

Check valve data.
Check pressure and liquid flow.
Check rest of installation.
Replace valve with a more suitable alternative

Replace valve.

Check pressure and liquid flow.
Replace defective component(s)

Check correct installation of valve (see instruction/datasheet)

Symptom: Solenoid valve making noise

Hum caused by AC frequency can be removed by changing to coil
with rectifier.
Inspect and clean inside armature and armature tube.
Can also be dirt or armature or spring worn out / defect (Replace valve or parts)

See installation guide.
Pipes very long and pipe diameter too small.

Check valve data.
Check pressure and liquid flow.
Check for back pressure.
Check rest of installation.
Replace valve with a more suitable alternative.

Symptom: Coil burnt – melted; coil with voltage on

Check coil data. If necessary, change to correct coil type. Check wiring
diagram and wiring. Check maximum voltage variation:
Permissible voltage variation: +/- 10% for dual frequency;
DC and NO applications +10% / -15% for AC on single frequency
voltages.

Check coil data. If necessary, replace coil with correct version.
Reduce differential pressure, e.g. by limiting inlet pressure.

Check coil data and differential pressure and ambience temperatures
and media and check with coil and valve specifications.

Replace valve.

Clean armature tube and armature. If necessary, replace defective
component(s).