Dripping tap despite valve replacement

[Seamus999]

I have a Bristan Manhattan mixer tap in the kitchen. Five years ago, it started to drip. I replaced the valve in the cold water side and the dripping stopped. Recently it began to drip again and I replaced the valve again. But, it still drips sometimes. I’m trying to replace the valve on the hot side but can’t get the cover off. The hot side is very seldom used as we don’t have constant hot water, so I presumed the cold side was the problem. What else can cause it to drip? Comments, please! Thank you.

 

[Ben-gee]

Isolate the hot pipework and see if it still drips, so you know which side is dripping.