Draining central heating systems

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Draining central heating systems

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Treacodactyl
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Joined: 28 Oct 2004
Posts: 25795
Location: Jumping on the bandwagon of opportunism

Posted: Mon Mar 07, 05 10:53 am Post subject: Draining central heating systems
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 ï¿½3 for a 15mm one.

jema
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Joined: 28 Oct 2004
Posts: 28237
Location: escaped from Swindon

Posted: Mon Mar 07, 05 12:08 pm Post subject: Re: Draining central heating systems

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 ï¿½3 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
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 25795
Location: Jumping on the bandwagon of opportunism

Posted: Mon Mar 07, 05 12:16 pm Post subject:
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

Posted: Tue Mar 22, 05 4:07 pm Post subject:
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

Posted: Sun Jul 10, 05 11:41 am Post subject:
dont forget if you drain down , to add inibitor (sp?) to prevent sludge..

2blackcat

Joined: 31 Aug 2005
Posts: 42

Posted: Thu Sep 08, 05 9:15 pm Post subject:
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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