On 27/01/2018 14:08, Newman wrote:
On 27/01/2018 11:17, John Rumm wrote:
On 27/01/2018 09:38, Newman wrote:
On 26/01/2018 23:29, John Rumm wrote:
On 26/01/2018 21:54, Newman wrote:

I need to replace a leaking TRV.
Where can I purchase a reasonably priced angled TRV with a 1/2 inch
BSP
female inlet?

The BSP female input seems to be a thing from way back, I have not
seen any new ones like that.

A TRV with a push fit base and slightly longer stem might make for an
easy swap, if you can cut the pipe stem to the right length (and
assuming its 15mm):

https://www.bes.co.uk/pegler-yorkshi...fit-15mm-18959



Thanks

It is 15mm. Does a 1/2in BSP fitting have an olive in the pipe?

No, a BSP fitting on an old rad valve was usually just a female
threaded socket. You needed a male threaded connector to connect to
it[1]. They would typically have a flat machined surface where a seal
could be made with a fibre washer. Alternatively, one would use a
tapered male fitting, and PTFE / Hemp or some other thread sealant to
make a seal on the threads.

Modern rad valves usually have a 15mm compression fitting with its own
back nut which does use an olive.

[1] Often a male BSP to 15mm compression adaptor would be used to in
effect turn the TRV into a compression fitting. About the only time
the BSP TRV would be useful directly would be on a system piped in
"iron barrel" pipes with threaded connections. There it could screw
directly onto a threaded pipe tail.

Thanks again.

So, if I remove the male BSP fitting from the pipe, that will leave a
bare 15mm pipe to which I can then fit a normal 15mm right angled TRV?

Yup that sounds likely - post a photo somewhere we can see if it you
want me to check...

However this was a photo someone posted a few weeks back:

https://www.dropbox.com/s/t5613768cj1hezn/Rad1.jpg?dl=0

It shows a rad valve with a female BSP socket that points down, and then
a male BSP to compression adaptor screwed into it so that it can connect
to the pipe. If yours is something like that, then yup. Chop off the
pipe under the compression adaptor, and extend if necessary, then
connect to new valve.

--
Cheers,

John.

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