10mm or 8mm Microbore - How can I tell?
 

I'm modifying some of my plumbing. Going to fit two radiators to
replace old ones (now binned). The existing pipework to the rads is
microbore to a valve, the pipes both go into the valve on one side of
the rad.

Im going to cut the pipework under the floor and, using pushfit
couplers and copper 10mm microbore, bring new pipe to each end of the
new radiators and use pushfit trv's and lockshield's at each end.

I want to buy the parts I need now and holding a ruler across the
outside of the microbore it reads 10mm but is microbore measured by
inner or outer diameter?

I don't want to purchase the wrong couplers/reducers for where I will
be connecting to the old pipework.

Cheers

EC

In an earlier contribution to this discussion,
EC wrote:

I'm modifying some of my plumbing. Going to fit two radiators to
replace old ones (now binned). The existing pipework to the rads is
microbore to a valve, the pipes both go into the valve on one side of
the rad.

Im going to cut the pipework under the floor and, using pushfit
couplers and copper 10mm microbore, bring new pipe to each end of the
new radiators and use pushfit trv's and lockshield's at each end.

I want to buy the parts I need now and holding a ruler across the
outside of the microbore it reads 10mm but is microbore measured by
inner or outer diameter?

I don't want to purchase the wrong couplers/reducers for where I will
be connecting to the old pipework.

Cheers

EC

O.D. - if it measures 10mm, it *is* 10mm.
--
Cheers,
Set Square
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