Solenoid Valve Problems (2) – Coils

Solenoid Valve Problems 2; Coils

n this blog, we are going to look at solenoid valve problems 2: coils.

Solenoid valves, where specified correctly can operate for a long time (we’ve come across instances of 25 years..) but one type of problem can occur frequently – burnt-out coils.

Burnt out coils can occur because of one of two problems:

(1) Sediment or other matter lodged in the armature.

Remedy – isolate and dismantle the valve, clean the interior with solvent and compressed air and if necessary, install a filter upstream of the valve.

The inside of a solenoid valve is machined to a high tolerance. Scraping the inside of a solenoid valve could cause damage – never clean by scraping with sharp tools.

Consider also if the fluid is reacting with the valve construction materials causing corrosion.

An alternative construction of valve may be required – V-Flow Solutions Ltd can supply a large range of solenoid valves for a variety of applications.

(2) Bent guide tube.

The solenoid valve could have been dropped, knocked accidentally or the valve may have been installed by winding onto the pipe using the coil as a lever.

Check straightness of the armature and free movement of the plunger against its spring.

Only install solenoid valves using appropriately sized spanners on the end connections.

Remedy – replace the armature/install valve correctly / protect the coil from possible knocks.

Contact V-Flow Solutions Ltd for any spare parts you may require.

Another cause of burnt-out coils is water ingress between the coil and armature, this is more due to the environment that the valve/coil are situated in.

Remedy – shield the coil from water or relocate the valve to a dry location.

If you would like to speak to our technical team about any issues with Solenoid Valves or Coils, please contact us on;

Telephone: 01234 855888


Alternatively you can use the contact form below.

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