I bought a set (hot and cold) of Bristan quarter-turn valves from
Plumb Centre almost exactly three years ago and this morning I noticed
that the cold tap was dripping ~very~ slightly. After a while it
stopped. Later, I turned on the cold again to fill the kettle, but it
didn't drip after switching it off this time.

A little spec of grit, maybe? How long are these valves supposed to
last?

MM

MM wrote:

I bought a set (hot and cold) of Bristan quarter-turn valves from
Plumb Centre almost exactly three years ago and this morning I noticed
that the cold tap was dripping ~very~ slightly. After a while it
stopped. Later, I turned on the cold again to fill the kettle, but it
didn't drip after switching it off this time.

A little spec of grit, maybe? How long are these valves supposed to
last?

My kitchen mixer has been in place about 7 years, and this year
both hot and cold began to drip. I opened them up and found scale
deposits on the ceramic disc, which were quite easily removed,
and all is well.

Perhaps the hardest part is knowing how to gain access; once in
it is simple to fix.

Chris
--
Chris J Dixon Nottingham UK


Plant amazing Acers.

"MM" wrote in message ...

I bought a set (hot and cold) of Bristan quarter-turn valves from
Plumb Centre almost exactly three years ago and this morning I noticed
that the cold tap was dripping ~very~ slightly. After a while it
stopped. Later, I turned on the cold again to fill the kettle, but it
didn't drip after switching it off this time.

A little spec of grit, maybe? How long are these valves supposed to
last?

MM

Bristan have a five year guarantee:
http://www.bristan.com/epages/Bristan.sf/en_GB/?ObjectPath=/Shops/Bristan/Categories/"Customer_Service%20Footer"/Product_Guarantees
http://preview.tinyurl.com/plolnwf

In article ,
MM wrote:
I bought a set (hot and cold) of Bristan quarter-turn valves from
Plumb Centre almost exactly three years ago and this morning I noticed
that the cold tap was dripping ~very~ slightly. After a while it
stopped. Later, I turned on the cold again to fill the kettle, but it
didn't drip after switching it off this time.

A little spec of grit, maybe? How long are these valves supposed to
last?

I have quarter turn lever types in the kitchen. Nothing expensive - just
shed bought.

Must be 15 years old plus, and never given a problem. But probably don't
get as much use as with a large family.

--
*Out of my mind. Back in five minutes.

Dave Plowman London SW
To e-mail, change noise into sound.

Chris J Dixon presented the following explanation :
My kitchen mixer has been in place about 7 years, and this year
both hot and cold began to drip. I opened them up and found scale
deposits on the ceramic disc, which were quite easily removed,
and all is well.

Perhaps the hardest part is knowing how to gain access; once in
it is simple to fix.

I had the same problem after a year, despite it being a soft water
area. Just find the way in to the disk and gently scrape the deposits
off.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Are you in a hard water area?
I'm afraid limescale can form on most surfaces unfortunately. Some people
also do not turn taps of tightly and let little dribbles through making the
limescale get worse.
Brian

--
From the Sofa of Brian Gaff Reply address is active
"MM" wrote in message
...
I bought a set (hot and cold) of Bristan quarter-turn valves from
Plumb Centre almost exactly three years ago and this morning I noticed
that the cold tap was dripping ~very~ slightly. After a while it
stopped. Later, I turned on the cold again to fill the kettle, but it
didn't drip after switching it off this time.

A little spec of grit, maybe? How long are these valves supposed to
last?

MM

On Tue, 21 Jul 2015 12:07:03 +0100, "Brian-Gaff"
wrote:

Are you in a hard water area?

Yes.

I'm afraid limescale can form on most surfaces unfortunately. Some people
also do not turn taps of tightly and let little dribbles through making the
limescale get worse.
Brian

I'll keep an eye on the tap. If it drips again I'll replace the
cartridges or maybe just try and clean the existing one. At present,
it's only the cold tap.

MM

In article ,
Brian-Gaff wrote:
Are you in a hard water area? I'm afraid limescale can form on most
surfaces unfortunately. Some people also do not turn taps of tightly
and let little dribbles through making the limescale get worse.

London water is pretty hard.

They tend to have a positive end stop - so not quite like a washer type
where you're tightening it down.

With my lever ones, OCD makes sure you turn them off fully. ;-)

--
*Why isn't there a special name for the back of your knee?

Dave Plowman London SW
To e-mail, change noise into sound.

MM wrote:
I bought a set (hot and cold) of Bristan quarter-turn valves from
Plumb Centre almost exactly three years ago and this morning I noticed
that the cold tap was dripping ~very~ slightly. After a while it
stopped. Later, I turned on the cold again to fill the kettle, but it
didn't drip after switching it off this time.

A little spec of grit, maybe? How long are these valves supposed to
last?

MM

They rely on the pressure from the o rings(or what ever shape they
are)to seal and on some of the cheaper units they don't always do the
job forever

On 22/07/2015 01:42, F Murtz wrote:
MM wrote:
I bought a set (hot and cold) of Bristan quarter-turn valves from
Plumb Centre almost exactly three years ago and this morning I noticed
that the cold tap was dripping ~very~ slightly. After a while it
stopped. Later, I turned on the cold again to fill the kettle, but it
didn't drip after switching it off this time.

A little spec of grit, maybe? How long are these valves supposed to
last?

MM

They rely on the pressure from the o rings(or what ever shape they
are)to seal and on some of the cheaper units they don't always do the
job forever


It would've been be a bit of grit in MMs case. The grit can get
temporarily trapped between the ceramic plates.