New tap, stiff valve so soon

[tibi08]

Installed a new kitchen tap, to replace a 10 year old one where the cold valve had got rather stiff. Perfect - silky smooth ceramic valves in the new tap! But now after just 3-4 weeks, the cold tap has once again got really stiff. I don't understand how this is possible - the water is not very hard, maybe a little but not enough to cause stiffness so quickly, surely? Could there be some debris in the pipework damaging the valve (a 10 year old house)? Any other ideas?

 

[John D v2.0]

some combis can drop scale into the hot taps, I used to live in places that got water from chalk hills, and you needed a strainer on some boiler HW outlet to catch all the flakes otherwise they lodged in the taps. But you say yours is the cold tap, does that mean it has two independent controls rather than a combined one?
I'd probably call the manufacturer for a return, see what they suggest,

 

[Hot&Cold]

Whats the make & model of the sink tap

 

[tibi08]

Whats the make & model of the sink tap

It's a John Lewis Race kitchen tap. Understand it has San Marco ceramic cartridges so would expect those to be reliable.

 

[Madrab]

But now after just 3-4 weeks, the cold tap has once again got really stiff

5 year guarantee .... take it back, may be a faulty item. If it does it again then look to your supply for the problem

 

[Hot&Cold]

Best contact the retailer in writing and air your concern with them,say the cold water tap is becoming progressively harder to turn and the hot tap is ok.

They will pass your enquiry to their supplier

 

[tibi08]

some combis can drop scale into the hot taps, I used to live in places that got water from chalk hills, and you needed a strainer on some boiler HW outlet to catch all the flakes otherwise they lodged in the taps. But you say yours is the cold tap, does that mean it has two independent controls rather than a combined one?
I'd probably call the manufacturer for a return, see what they suggest,

5 year guarantee .... take it back, may be a faulty item. If it does it again then look to your supply for the problem

Best contact the retailer in writing and air your concern with them,say the cold water tap is becoming progressively harder to turn and the hot tap is ok.

They will pass your enquiry to their supplier

Thanks all, will do!