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Draining central heating systems

 
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Treacodactyl
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Joined: 28 Oct 2004
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Location: Jumping on the bandwagon of opportunism
PostPosted: Mon Mar 07, 05 10:53 am    Post subject: Draining central heating systems Reply with quote
    

Not realy a tip, but this may be useful. Some people have had trouble draining an old heating system due to no drain cocks or ones that are stuck fast. I've just seen a new product that could be used and minimise the mess. A self-cutting drain cock, about £3 for a 15mm one.

jema
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Joined: 28 Oct 2004
Posts: 28098
Location: escaped from Swindon
PostPosted: Mon Mar 07, 05 12:08 pm    Post subject: Re: Draining central heating systems Reply with quote
    

Treacodactyl wrote:
Not realy a tip, but this may be useful. Some people have had trouble draining an old heating system due to no drain cocks or ones that are stuck fast. I've just seen a new product that could be used and minimise the mess. A self-cutting drain cock, about £3 for a 15mm one.


Do they do 8mm? where from?

I have now got hold of a drain valve for mine, but have not fitted it.

Treacodactyl
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Joined: 28 Oct 2004
Posts: 25795
Location: Jumping on the bandwagon of opportunism
PostPosted: Mon Mar 07, 05 12:16 pm    Post subject: Reply with quote
    

It's in the spring BES catalogue supplement, www.bes.co.uk part 17036. No sign of 8 or 10 mm; only 15mm.

If you don't mind replacing some pipework a temp self cutting tap may be useful but again I've not seen anything for 8mm.

joker



Joined: 08 Nov 2004
Posts: 188
Location: hiding
PostPosted: Tue Mar 22, 05 4:07 pm    Post subject: Reply with quote
    

Unfortunatley 8mm tube is just too small for the self cutting devises to be used on
You could try freezing the pipe work either side of where you want to put the drain off cock BES product no 6875

lazzasurf



Joined: 01 Jan 2005
Posts: 30
Location: wolverhampton
PostPosted: Sun Jul 10, 05 11:41 am    Post subject: Reply with quote
    

dont forget if you drain down , to add inibitor (sp?) to prevent sludge..

2blackcat



Joined: 31 Aug 2005
Posts: 42

PostPosted: Thu Sep 08, 05 9:15 pm    Post subject: Reply with quote
    

Be careful of these self cutting devices

If they're not kept straight while cutting it could cause flooding ... and a lot more work having to be done in a hurry

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