Remove the Coil 

 Remember to Deenergise the coil first to prevent electrical overheating/damage

Apply Magent Coil

The magent will fit up to 15mm Solenoid Coil Stems -  All Brands.

Magent applied - you should hear a Click

If your valve is normally closed it will open with the magnet applied. Some Valves require high powered coils to open (In these cases  the magnet won't work)