Karcher Window Vacuum Water Tank4.633-122.0

What is the function of the water tank in window cleaners?

The water tank in window cleaners serves as a reservoir for holding water or cleaning solution that is used during the window cleaning process. It allows users to conveniently carry and apply water or cleaning solution to the windows without the need for constant refilling.

It's designed with a pump or a spray mechanism that enables controlled release or spraying of the liquid onto the windows. 

Why do they get replaced?

Water tanks develop cracks or leaks over time so water or cleaning solution seeps out and reduces the effectiveness of the window cleaning process. If the tank becomes damaged or shows signs of brittle plastic or broken parts, it no longer functions properly and requires replacement. 

Is it a genuine spare part? 

This water tank by Karcher is a genuine window cleaner replacement part. Your window cleaner can work good-as-new in cleaning your window and other glass surfaces.