freddyuk writes:
Brian Sharrock Wrote:
"Michael Dritschel" wrote in message
-did-not-set--mail-host-address--so-tickle-me...-
We are in the process of building a new kitchen. For the tap we
would like to use the same one we had in our last kitchen in the US.
The fitting for these are indicated on the technical drawings as
'1/2"
NPSM coupling nut for 3/8" or 1/2" flexible riser'. Would I need any
special adapter couple the standard UK plastic pipe to this? If so,
where might I find such an adapter?
I realise that mixer taps are made a bit differently here, mostly to
prevent syphoning from the hot water tank into the cold water system
in the case of low pressure. Since we have a combi boiler, this
isn't
a concern, so assume the american taps can be used safely.
Thanks for any help.
Michael Dritschel
m,a,dritschel&ncl,ac,uk
-
Apparently; The 'N' is for National versus the 'B' which is for
British ... so the USAians have at least a different nomenclature
if not any different size for their water connections;
American National Standard Pipe Threads
NPT: National Pipe Taper Thread
A sealant compound or Teflon tape must be used for a
leak-free seal.
FPT: female (internal) National Pipe Taper threads
MPT: male (external) National Pipe Taper threads
NPTF: Dryseal American National Standard Taper Pipe Thread
No sealant is needed for a seal.
NPS: American Standard Straight Pipe Thread
Used for mechanical joining -- holding a fitting in place.
An O-ring or a metal seal is required.
NPSF: Dryseal American National Standard Straight Pipe Thread
British Standard Pipe Thread
BSPT: British Standard Pipe Taper threads
BSPP: British Standard Pipe Parallel (straight) threads
Assuming that NSPM is National Pipe Standard _Male_
then one might need a BSP(parallel) ... ?
Aren't there water bye-laws insisting that only 'approved' appliances
are connected to the water-main?
--
Brian
Yes there probably are. We can buy some real crap fittings in UK no one
will know where they are fitted or probably care. The US just sells the
same , or often better quallity fittings for half the price.Bathroom
gear , along with most other "household" stuff, is mostly made in
China. The higher price fittings are made in Germany or the like but i
bet that in fact the production line is in the Far East (or soon will
be).
I have no recollection of any fitting i have bought in UK being
labelled as suitable for local byelaws.(except for the water storage
tank lid kit which i think is Bylaw 32? and ensures you have to buy a
huge amount of gear you do not need in most cases as you cant buy just
a lid.) Have you? You can still install a plumbing fitting abiding by
the local byelaws (ie a non return valve in the system)but they do not
have to be "approved" as far as i know just do the job the byelaw
requires.
If they are sold in the local plumbers merchant then they should be
ok.
By the way - a half inch American fitting will fit a UK half inch
fitting no problem.
Freddy
--
freddyuk
I could easily fit a non-return valve on the cold water if this will
make things compliant with various regulations, but I assumed that
without a water storage tank, this was not an issue.
The tap we are considering is made by Chicago Faucets. Retail price
translates to about £300, though you can get it for half that by
shopping around. From experience I would say that the quality is as
good or better than those from Pegler we have installed in the bath.
I have friends who have shopped for taps in France and the Netherlands
to install here, both because the prices are quite a bit less for the
same quality and because there is a wider range of styles available.
Are there similar issues in this case?
Anyway, thanks to both of you for the helpful information.
Michael