Obsolete and No Longer Available, the Nilfisk and Tellus Thermovalve For Older and the  These were fitted on the Original and commercial vacuum cleaners. They are located in front of the IEC Power Inlet socket. Formerly Pn. 21638001

They pop up when the motor overheats due to hose blockage, to allow in cooling air.

They are NOT fitted on the new and the 

Choose a replacement machine in the related items below, with free shipping, Australia wide!!

If you want any other replacement parts and accessories featured below, standard postage is capped at a maximum of $25 within Australia, and free postage after a $400 spend!