I have noticed that the 15mm mains feed to my cold water tank is pretty damn
noisy when the tank is filling up.
The mains run is quite long from the basement up to the loft where the CW
tank is & has a fair few bends in it on its way to the loft.
I`m wondering however if its actually the filling valve to the CW tank which
is actually the noisy part (cheepest, ****test valve installed by a plumber
I had round once). The tank is fully lagged in the loft & I can still hear
it !
If I replaced the valve on the tank would this stop the 'rushing' noise in
the pipes? Ideally I want something that isn`t going to restrict the flow as
the tank will need to fill quickly when the power shower is on for instance.

Steve

On Tue, 20 Jan 2004 12:28:40 -0000, "steve" wrote:

I have noticed that the 15mm mains feed to my cold water tank is pretty damn
noisy when the tank is filling up.
The mains run is quite long from the basement up to the loft where the CW
tank is & has a fair few bends in it on its way to the loft.
I`m wondering however if its actually the filling valve to the CW tank which
is actually the noisy part (cheepest, ****test valve installed by a plumber
I had round once). The tank is fully lagged in the loft & I can still hear
it !
If I replaced the valve on the tank would this stop the 'rushing' noise in
the pipes? Ideally I want something that isn`t going to restrict the flow as
the tank will need to fill quickly when the power shower is on for instance.

Steve


You should find that a Torbeck valve will help quite a bit. It won't
stop pipe noise but may reduce it, and will certainly help where noise
is being generated at the valve.


..andy

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"Andy Hall" wrote in message
...
On Tue, 20 Jan 2004 12:28:40 -0000, "steve" wrote:

I have noticed that the 15mm mains feed to my cold water tank is pretty
damn
noisy when the tank is filling up.
The mains run is quite long from the basement up to the loft where the CW
tank is & has a fair few bends in it on its way to the loft.
I`m wondering however if its actually the filling valve to the CW tank
which
is actually the noisy part (cheepest, ****test valve installed by a
plumber
I had round once). The tank is fully lagged in the loft & I can still
hear
it !
If I replaced the valve on the tank would this stop the 'rushing' noise
in
the pipes? Ideally I want something that isn`t going to restrict the flow
as
the tank will need to fill quickly when the power shower is on for
instance.

Steve


You should find that a Torbeck valve will help quite a bit. It won't
stop pipe noise but may reduce it, and will certainly help where noise
is being generated at the valve.

Thanks Andy,
Would the Screwfix one below be suitable for the CW tank (I notice it's for
a cistern)?
http://www.screwfix.com/app/sfd/cat/...14716&ts=04427
Steve

On Tue, 20 Jan 2004 13:12:06 -0000, "steve" wrote:

"Andy Hall" wrote in message
.. .
On Tue, 20 Jan 2004 12:28:40 -0000, "steve" wrote:

I have noticed that the 15mm mains feed to my cold water tank is pretty
damn
noisy when the tank is filling up.
The mains run is quite long from the basement up to the loft where the CW
tank is & has a fair few bends in it on its way to the loft.
I`m wondering however if its actually the filling valve to the CW tank
which
is actually the noisy part (cheepest, ****test valve installed by a
plumber
I had round once). The tank is fully lagged in the loft & I can still
hear
it !
If I replaced the valve on the tank would this stop the 'rushing' noise
in
the pipes? Ideally I want something that isn`t going to restrict the flow
as
the tank will need to fill quickly when the power shower is on for
instance.

Steve


You should find that a Torbeck valve will help quite a bit. It won't
stop pipe noise but may reduce it, and will certainly help where noise
is being generated at the valve.

Thanks Andy,
Would the Screwfix one below be suitable for the CW tank (I notice it's for
a cistern)?
http://www.screwfix.com/app/sfd/cat/...14716&ts=04427
Steve


Yes. You're going to want the side entry one that you have suggested.
They come with flow reducers - the little inserts in the bottom of the
picture. Basically these are s spiral insert which pushes into the
back of the valve before fitting the tank connector nut. At very
low pressures, none is used, at slightly higher pressures there is a
low pressure one, and then there is a high pressure one.

Before you start, I would run your shower for its typical time and see
how much the water level in the tank drops. You could also measure
the rate into the tank by filling a measured container and timing.
Then you have a benchmark.

When you fit the Torbeck, you can then play around with the different
flow restrictors and pick one that is suitable. Generally the flow
rate is good anyway, so it is a case of trying and seeing. If the
pressure is very high and you don't have a flow restrictor, you may
find a tendency for a water hammer from the valve.
You can also cut a piece off of the flow restrictor if you want
something in between.

One other point if you haven't used a plastic valve before. Take
care that you don't cross-thread when you put on the tank connector
nut. make sure that the fitting is square on and that the fibre
washer is in place and then put on the nut very carefully. If it
doesn't turn easily, don't force it, relocate and try again.





..andy

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