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Dean Asked :I am interested in the Grohe Concetto Sink Mixer tap manufacturers product number MFC CODE: 3266600. I was wondering if the function for the separate small tap underneath the main tap was for a water filter? Please could you confirm what this is for as i will purchase this item as soon as I know. Thank you so much Dean
Answered By QS Team :
The separate lever is an isolation valve most commonly used for a washing machine.