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Author: Ed SirettEd Sirett Date: May 7, 2008 10:44
On Tue, 06 May 2008 22:53:57 +0100, Jim Alexander wrote:
> "Doctor Drivel" nospam.com> wrote in message
> news:fvq4ej$3gh$1@aioe.org...>>
>> "Ed Sirett" makewrite.demon.co.uk> wrote in message
>> news:fvq2ns$2il$4$8300dec7@news.demon.co.uk...>...
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Author: Clive GeorgeClive George Date: May 7, 2008 11:01
"Ed Sirett" makewrite.demon.co.uk> wrote in message
news:fvspqb$k6r$3$8300dec7@news.demon.co.uk...> On Tue, 06 May 2008 22:53:57 +0100, Jim Alexander wrote:
>
>> "Doctor Drivel" nospam.com> wrote in message
>> news:fvq4ej$3gh$1@aioe.org...>>>
>>> "Ed Sirett" makewrite.demon.co.uk> wrote in message
>>> news:fvq2ns$2il$4$8300dec7@news.demon.co.uk...
>>>>>>> The most common faults by far and away are not pushing the pipe fully
>>>> home. If you mark the pipe with the correct insertion depth then the
>>>> joints are at least as reliable as soldering and their long term
>>>> prospects are far better than compression joints.
>>>
>>> What world are you in? The grab ring disintegrating is more common
>>> that what you think. Plastic pipes with brass compression joints is
>>> the best jointing for plastic pipes. The only proviso is that there
>>> must be enough slack in the plastic to cope for expansion as the
>>> expansion may pull the pipe out of the joints and olive. ...
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Author: Ed SirettEd Sirett Date: May 7, 2008 11:12
On Tue, 06 May 2008 22:53:57 +0100, Jim Alexander wrote:
> "Doctor Drivel" nospam.com> wrote in message
> news:fvq4ej$3gh$1@aioe.org...>>
>> "Ed Sirett" makewrite.demon.co.uk> wrote in message
>> news:fvq2ns$2il$4$8300dec7@news.demon.co.uk...>...
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Author: Ed SirettEd Sirett Date: May 7, 2008 11:18
On Tue, 06 May 2008 22:52:58 +0000, ARWadworth wrote:
> "dennis@home" killspam.kicks-ass.net> wrote in message
> news:fvqj7h$cdb$1@news.datemas.de...>>
>>
>> "ARWadworth" blueyonder.co.uk> wrote in message
>> news:4W2Uj.20754$yD2.10377@text...
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Author: Ed SirettEd Sirett Date: May 7, 2008 11:24
On Tue, 06 May 2008 22:53:16 +0100, me9 wrote:
> On 6 May,
> Ed Sirett makewrite.demon.co.uk> wrote:
> >> I bought a 25m real of PB (grey) pipe for about £25 quid last week. I'd
>> pay about £47 for 30m of Cu. That's not even 2:1. It's the installation
>> time that is the clincher.
>>
>> I hate the (usually) white PEX plastic pipe. It is just to stiff to be
>> a big advantage over copper.
>
> Is there any good reason why (blue) MDPE can't be used for indoor cold
> water services, apart from appearance? It's even cheaper, more flexible
> and seems to work well out of sight.
20mm is only the equivalent of 15mm PB and is (IMHO) much stiffer than PC
pipe. The fittings for the MDPE are enourmous even next to Speedfits
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Author: Ed SirettEd Sirett Date: May 7, 2008 11:22
On Wed, 07 May 2008 14:55:09 +0100, Dave Liquorice wrote:
> On Wed, 7 May 2008 13:18:48 +0100, dennis@home wrote:
>
>>>> To someone that has done a heating system it would suggest a rad and
>>>> a manifold.
>>>
>>> Ah. Another bodge. Say no more.
>>
>> What's a bodge about doing it correctly?
>
> Manifold implies microbore
No.
implies bodge...
Maybe, maybe not.
>
> Can you get microbore plastic?
Yes.
Typically say you were doing a first floor flat.
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Date: May 7, 2008 12:11
>
> "dennis@home" killspam.kicks-ass.net> wrote in message
> news:fvqop2$2fj$1@news.datemas.de...>>>
>>> "dennis@home" killspam.kicks-ass.net> wrote in message
>>> news:fvqj7h$cdb$1@news.datemas.de...>>>>>
>>>>> "dennis@home" killspam.kicks-ass.net> wrote in message
>>>>> news:fvq9mj$jd$1@news.datemas.de...>>>>>> ...
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Date: May 7, 2008 12:17
> So you have done a CH install with a manifold (of course these are not
> cheap) and run microbore to the rads. You might save on a few connectors
> but the manifold option wastes pipe in most cases.
Yes, manifold to 15 mm, 15 mm to five zone valves, zone valves to rads and
cylinder, return to manifold.
What is the problem?
Do you think five zones with timer stats is overdoing a semi or is there
something else?
It wasn't plastic BTW as plastic wasn't around when I first did it.
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Author: ARWadworthARWadworth Date: May 7, 2008 12:35
"dennis@home" killspam.kicks-ass.net> wrote in message
news:fvsv44$l1e$1@news.datemas.de...>> So you have done a CH install with a manifold (of course these are not
>> cheap) and run microbore to the rads. You might save on a few connectors
>> but the manifold option wastes pipe in most cases.
>
> Yes, manifold to 15 mm, 15 mm to five zone valves, zone valves to rads and
> cylinder, return to manifold.
> What is the problem?
> Do you think five zones with timer stats is overdoing a semi or is there
> something else?
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Date: May 7, 2008 12:47
>
> "dennis@home" killspam.kicks-ass.net> wrote in message
> news:fvsv44$l1e$1@news.datemas.de...>>> So you have done a CH install with a manifold (of course these are not
>>> cheap) and run microbore to the rads. You might save on a few connectors
>>> but the manifold option wastes pipe in most cases.
>>
>> Yes, manifold to 15 mm, 15 mm to five zone valves, zone valves to rads
>> and cylinder, return to manifold.
>> What is the problem?
>> Do you think five zones with timer stats is overdoing a semi or is there
>> something else? ...
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