I have some old central heating to upgrade. Some of the pipework is probably
imperial. Can somebody kindly confirm that connections can be as follows:
Half-inch to 15mm : use an ordinary 15 mm compression fitting.
Three-quarter-inch to 22 mm : Use an odinary compression fitting but swap
the olive to a special one. (BES part no. 9055 on page 142)
Am I right in thinking that this is fine for gas as well as water?
Am I right in thinking that I cannot use solder fittings, even for
BES have a rather expensive part (no 7826 on page 141) specifically for
joining three-quarter inch to 22 mm. Should I be using this?
Thanks in advance.
unless you are a registered Corgi gas fitter (which I doubt, or you wouldn't
be asking the questions) you should not be even considering touching gas
All gas work must be done by a Corgi registered fitter, by law.
With regard to the water pipes, any decent plumbers merchant will carry a
variety of conversion fittings.
These can be compression or solder.
You can probably get away with 1/2" to 15mm compression and 3/4" to 22mm
compression (as you say, a conversion olive is a good idea).
I leave others to answer the BES specific questions :-)
However, do make certain that any gas fittings you use are the right
ones for the job.
The local plumbers merchant tried to palm me off with a 3/4" to 22mm
adapter that was totally unsuitable for gas, even though he claimed it
Only if carrying out the work as a trader do you need to be CORGI reg -
otherwise competent DIYers have no restrictions - but traders would like us
to think there are. I invite any correction with a link to the appropriate
In Australia DIYers are forbiden to work on gas installations by law.
You can work on your own gas appliance at your own risk of your
definition of "competence" on non gas carrying parts
To work on a gas appliance for financial gain, you need to be CORGI
I think that what I posted above is now also true
I shall phone CORGI on Monday and ask them directly whether it is law or
"CORGI Law" and get this sorted out once and for all
Well I hope I am, but I'm sure I've seen labels on items recently which
say that it is illegal to interfere with gas carrying parts unless you
are CORGI registered.
We'll know tomorrow after I've phoned them
Fairly sure the labels are going beyond the precise interpretation of
BTW if any thing does go wrong when you are doing your own gas fitting
probably the only proof of competency that would sand up at law would be
to have ACS exam passes.
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
Actually I'm not sure if the law has been changed recently or not, if
you read the first paragraph of the CORGI section on the deputy prime
ministers page below it definitely says that it is a legal requirement
for businesses and self-employed people working on gas fittings or
The weasel words appear to leave the door open for non-businesses and
non-self-employed people (e.g. homeowners) to do their own thing. Slip
me a fiver guv and I'll connect your gas cooker.....
BUT, don't forget that a fairly recent change has come into play when
a house changes ownership. It is now mandatory (I think....) for the
buyers solicitor to send the sellers solicitor a standard form listing
lots of questions about the property, and you as the seller get the
privilege of signing your life away on those questions. I can't
remember the details now, but I suspect that conveyancing malarky
might want to know about any material changes which may have taken
place on the property with respect to gas fitting. Adding 2+2 gives
the usual 4, where the buyers solicitor may well ask for a certificate
covering any such work, and homeowners aren't allowed to write such
Labour governments, usual red tape and useless legislation.
I reckon I'm competent, which is all that is required as I am not being paid
for this work. I have some technical qualifications to back that up.
However, it's a while since I've done any serious plumbing work, and hence
my rather naive questions. For my own peace of mind, I am having the work
checked over and the new boiler commissioned by a Corgi-registered fitter.
Thanks very much for the advice about the fittings, which is really helpful.
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