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Adapting radiator valve with an elbow

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aboleth

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Dec 22, 2009, 8:53:49 AM12/22/09
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Following advice here about fitting a fan heater in my cold bathroom,
I decided to check whether the problem was actually due to an
underpowered radiator... it turns out that the one I have is probably
about 800W, while the online calculator I tried out suggested I need
1800W for the room. So I'm going to boot out the designer nonsense and
fit a proper working radiator instead.

But... rad that is coming out has it's in/outlets on the bottom (see
pic at http://fotoflic.com/s/f8c8/). I want to replace with a
conventional radiator with side connections. I really don't fancy my
plumbing skills and I don't want to drain the system, so I'd like to
adapt the fitting and use the valves as they are. Is it possible to
get something like this:

http://www.screwfix.com/prods/17552/Plumbing/Radiator-Valves/Adjustable-Radiator-Valve-Tail-Union-Type;jsessionid=KBOG04PY3GZXGCSTHZPCFFI

but as a right-angled elbow rather than a straight piece?

richard

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Dec 22, 2009, 10:04:05 AM12/22/09
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Never seen one, and I think even say a 400mm double rad (about1200) is
500mm wide with valves
That said.You are in the happy place of any pipe work you add can be
isolated with the existing valves
Compression fittings are really easy to use honest., a few elbows and
cheap pipe cutter and lengh of pipe, give it a go
What are dimensions of towel rail and the distance between pipes
supplying it?

Dave Plowman (News)

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Dec 22, 2009, 10:35:05 AM12/22/09
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In article
<cd3e26be-700a-4a15...@b2g2000yqi.googlegroups.com>,

aboleth <abo...@gmail.com> wrote:
> Following advice here about fitting a fan heater in my cold bathroom,
> I decided to check whether the problem was actually due to an
> underpowered radiator... it turns out that the one I have is probably
> about 800W, while the online calculator I tried out suggested I need
> 1800W for the room. So I'm going to boot out the designer nonsense and
> fit a proper working radiator instead.

Don't think you can blame a 'designer' rad for lack of design. ;-)

--
*Aim Low, Reach Your Goals, Avoid Disappointment *

Dave Plowman da...@davenoise.co.uk London SW
To e-mail, change noise into sound.

Roger Mills

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Dec 22, 2009, 1:01:25 PM12/22/09
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In an earlier contribution to this discussion,
aboleth <abo...@gmail.com> wrote:


The normal solution would be to replace the existing valves with the
right-angled variety, which will connect directly to a conventional
radiator. This can be done without draining down if you block up the fill
and vent pipes (if a vented system) or de-pressurise (if non-vented) and
only replace one at a time and don't hang about too much.

But that might not solve your problem because the vertical pipes coming out
of the floor are probably too close together for your new rad, so you'll
probably have to go out sideways and then up again.
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!


aboleth

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Dec 23, 2009, 5:03:19 AM12/23/09
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The pipes are 1060mm apart. I was hoping to squeeze in a 1000mm rad
but it looks like I need at least 80mm for joints.

I hadn't twigged that i could use standard compression joints... i
think the answer is a 900mm rad and some industrial looking pipework.
Can you get chrome compression elbows?

Bob Minchin

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Dec 23, 2009, 5:18:38 AM12/23/09
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aboleth wrote:
>
> Can you get chrome compression elbows?

Yes readily available as is chrome plated pipe.
Maybe not in B&Q but screwfix/toolstation etc are bound to do them.

Bob

Usenet Nutter

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Dec 23, 2009, 5:31:21 AM12/23/09
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On Wed, 23 Dec 2009 02:03:19 -0800 (PST), aboleth <abo...@gmail.com>
wrote:

I appreciate your problem but I'd say there is nothing better than
siting the rad in it's proper position with pipes coming straight from
below the inlet/outlet of the rad using just a piece of straight pipe
and an angled valve .

Jon Fairbairn

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Dec 23, 2009, 5:35:35 AM12/23/09
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aboleth <abo...@gmail.com> writes:

> Following advice here about fitting a fan heater in my cold bathroom,
> I decided to check whether the problem was actually due to an
> underpowered radiator... it turns out that the one I have is probably
> about 800W, while the online calculator I tried out suggested I need
> 1800W for the room. So I'm going to boot out the designer nonsense and
> fit a proper working radiator instead.

Might be worth considering dry-lining the room instead.

--
Jón Fairbairn Jon.Fa...@cl.cam.ac.uk
http://www.chaos.org.uk/~jf/Stuff-I-dont-want.html (updated 2009-01-31)

Dave Plowman (News)

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Dec 23, 2009, 5:48:43 AM12/23/09
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In article
<bc7acf23-40c2-465d...@m38g2000yqd.googlegroups.com>,

aboleth <abo...@gmail.com> wrote:
> The pipes are 1060mm apart. I was hoping to squeeze in a 1000mm rad
> but it looks like I need at least 80mm for joints.

> I hadn't twigged that i could use standard compression joints... i
> think the answer is a 900mm rad and some industrial looking pipework.
> Can you get chrome compression elbows?

The neatest way is always to bend pipe rather than use compression
fittings. Solder fittings look better too. Screwfix do a few ready made
bent sections that might do what you want if you don't have a pipe bender
- but those need soldering too. Painting with chrome paint can look ok -
gives a sort of brushed SS look.

--
*Hard work has a future payoff. Laziness pays off NOW.

Tim W

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Dec 23, 2009, 6:06:06 AM12/23/09
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Bob Minchin <Nos...@nospam.com>
wibbled on Wednesday 23 December 2009 10:18

BES certainly do - I have some.

The only thing I've never managed to source are chrome 3/4" BSP to 15mm tap
connectors.

--
Tim Watts

This space intentionally left blank...

Tim W

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Dec 23, 2009, 6:09:01 AM12/23/09
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Jon Fairbairn <jon.fa...@cl.cam.ac.uk>
wibbled on Wednesday 23 December 2009 10:35

> aboleth <abo...@gmail.com> writes:
>
>> Following advice here about fitting a fan heater in my cold bathroom,
>> I decided to check whether the problem was actually due to an
>> underpowered radiator... it turns out that the one I have is probably
>> about 800W, while the online calculator I tried out suggested I need
>> 1800W for the room. So I'm going to boot out the designer nonsense and
>> fit a proper working radiator instead.
>
> Might be worth considering dry-lining the room instead.
>

If so, I would do it with Marmox and skim plaster or tile to that.

It's not much different to handling PB, though I would advise gluing it to
the walls rather than screwing to avoid any bounce.

20mm of that, if space permits will do a lot to help.

Jon Fairbairn

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Dec 24, 2009, 6:03:15 AM12/24/09
to
Tim W <t...@dionic.net> writes:

> Jon Fairbairn <jon.fa...@cl.cam.ac.uk>
> wibbled on Wednesday 23 December 2009 10:35
>
>> aboleth <abo...@gmail.com> writes:
>>
>>> Following advice here about fitting a fan heater in my cold bathroom,
>>> I decided to check whether the problem was actually due to an
>>> underpowered radiator... it turns out that the one I have is probably
>>> about 800W, while the online calculator I tried out suggested I need
>>> 1800W for the room. So I'm going to boot out the designer nonsense and
>>> fit a proper working radiator instead.
>>
>> Might be worth considering dry-lining the room instead.
>>
>
> If so, I would do it with Marmox and skim plaster or tile to that.

I was thinking of plaster or cement board on Xtratherm or
similar, but yes.

> 20mm of that, if space permits will do a lot to help.

I'd have thought most bathrooms could afford to lose a bit more
space than that.

aboleth

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Dec 24, 2009, 7:01:07 AM12/24/09
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On 23 Dec, 10:31, Usenet Nutter
<individual...@takeoutmyteethgmail.com> wrote:
> On Wed, 23 Dec 2009 02:03:19 -0800 (PST), aboleth <abol...@gmail.com>

Well, I replaced the rad. It turned out that a 1000mm one had exactly
the right distance to fit between the pipes. I added a short piece of
copper pipe to a compression elbow, which has the extra benefit of a
valve (meaning I can isolate the radiator and remove it without
emptying). The pipes were coming up too close to the wall, but there
was enough flexibility to join it up; I have slight worries about the
joints being under some torsion due to this, but nothing is leaking.

It looks ugly, and I will redo it I think, but that means draining the
system, which I didn't want to do. Given that it's a combi though,
this shouldn't be too hard?

I did wonder what the hell I was doing messing with the plumbing and
the heating on the day before Christmas!

Roger Mills

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Dec 24, 2009, 9:09:50 AM12/24/09
to
In an earlier contribution to this discussion,
aboleth <abo...@gmail.com> wrote:

>
> It looks ugly, and I will redo it I think, but that means draining the
> system, which I didn't want to do. Given that it's a combi though,
> this shouldn't be too hard?
>

Nah - you don't need to drain the system. Just drain and remove the rad in
question and then open one of the valves and catch the water in a container.
It will stop running after a couple of litres, at which time you can remove
the valve and modify the pipework. Then repeat the process with the other
valve (don't have both valves open at the same time) but you'll hardly get
any water out this time.

When you finished, re-pressurise the system - and Bob's your uncle!

aboleth

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Dec 24, 2009, 10:35:21 AM12/24/09
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On 24 Dec, 14:09, "Roger Mills" <watt.ty...@googlemail.com> wrote:
> In an earlier contribution to this discussion,
>
> aboleth <abol...@gmail.com>  wrote:

>
> > It looks ugly, and I will redo it I think, but that means draining the
> > system, which I didn't want to do. Given that it's a combi though,
> > this shouldn't be too hard?
>
> Nah - you don't need to drain the system. Just drain and remove the rad in
> question and then open one of the valves and catch the water in a container.
> It will stop running after a couple of litres, at which time you can remove
> the valve and modify the pipework. Then repeat the process with the other
> valve (don't have both valves open at the same time) but you'll hardly get
> any water out this time.
>
> When you finished, re-pressurise the system - and Bob's your uncle!


REALLY?? If that's right I would have done so, I thought I would get
the whole system emptying if I did that. Given the rad in question is
on the middle floor, what would stop all the higher up ones from
draining out when I removed the valve?

Roger Mills

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Dec 24, 2009, 11:37:43 AM12/24/09
to
In an earlier contribution to this discussion,
aboleth <abo...@gmail.com> wrote:

The fact that it's a sealed system, so no air can get in to replace any
water which comes out. If you're worried, turn off both ends [1] of all
radiators at the same or higher level - then they're guaranteed to stay
full - but they would, anyway.

I recently had to replace a radiator valve which got a bit mangled while the
rad was off for decorating. Mine is a vented system, but I've got full-bore
lever-operated isolating valves on both the flow and return pipes of my CH
and, having turned them off, I got scarcely more than a thimbleful out of
the valve in question when I opened it. With a non-vented system you don't
need such valves.

[1] If you do that, make a note of how many turns each lockshield valve
takes to close it so that you can put them back to the same condition
(assuming that your system has been balanced!)

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