Funny... several of my mains taps have started dripping in the last couple
of weeks. In fact, everyone I talk to about it also has dripping taps. Is it
a phenomena around here or is it something more general like the recent cold
weather that is making the washers harder?
It's possibile that room temps are lower, or the water is very
cold, meaning that the synthetic washers are stiffer, so when you
close the tap they don't compress as much initially but slowly
deform for a while after the tap is closed. After a while they
reach full deformation, releasing some of the pressure applied by
hand via the thread, and then let a bit of water through.
Or maybe it's condesation just inside the tap.
Or maybe all your washers are wearing out at the same time.
Sooner or later it's gotta happen to a group of friends somewhere
in the world, and it just happens to be you and your circle.
Or here's another idea. Water is at its maximum density at 4
Celsius. This could be the temp. at which cold water is arriving
at your tap. The water left in the pipework will warm up and
expand, increasing the pressure temporrarily as it forces water
back into the main.
Or perhaps none of those.
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