My main water shgut off valve is very discoloured, like a greeny/blue colour, and when I open it up again after shutting off the water, therev is a small leak around the spindle of the tap, and each time I have to tighen up a small nut on it.
Are the 2 things related and does it matter that the valve is discoloured.
Thanks
Are the 2 things related and does it matter that the valve is discoloured.
Thanks