I've removed the TRV from the radiator down-pipe and the adapter that
connects the radiator itself to the TRV. I'm left with the radiator
with adapter attached. The adapter has a captive nut
that was used to connect to the TRV body. The adapter is the same
finish as the old TRV and was obviously supplied with it. This adapter
converts to 3/4 BSP which suited the old TRV.
The new TRV is supplied with an adapter converting the radiator to 1/2
BSP which suits the new TRV. So I have to remove the old adapter. This
is the tricky part.
The old adaptor appears to have no cut-outs or shaping whatever to take
a spanner. It is totally smooth with only about 3mm between the
rediator casting and the captive nut. I cannot see how it can possibly
be removed.
Attach something else to it, and use that to unscrew it ?
How can I get this adpater off ?
Thanks,
Simon.

On 9 Mar 2006 01:54:03 -0800, wrote:

I've removed the TRV from the radiator down-pipe and the adapter that
connects the radiator itself to the TRV. I'm left with the radiator
with adapter attached. The adapter has a captive nut
that was used to connect to the TRV body. The adapter is the same
finish as the old TRV and was obviously supplied with it. This adapter
converts to 3/4 BSP which suited the old TRV.
The new TRV is supplied with an adapter converting the radiator to 1/2
BSP which suits the new TRV. So I have to remove the old adapter. This
is the tricky part.
The old adaptor appears to have no cut-outs or shaping whatever to take
a spanner. It is totally smooth with only about 3mm between the
rediator casting and the captive nut. I cannot see how it can possibly
be removed.
Attach something else to it, and use that to unscrew it ?
How can I get this adpater off ?
Thanks,
Simon.

Did you look at the fitting internally .Does it not have a hexagonal
(?) inner to take a VERY large Allen key type spanner .??


Stuart

wrote in message
oups.com...
I've removed the TRV from the radiator down-pipe and the adapter that
connects the radiator itself to the TRV. I'm left with the radiator
with adapter attached. The adapter has a captive nut
that was used to connect to the TRV body. The adapter is the same
finish as the old TRV and was obviously supplied with it. This adapter
converts to 3/4 BSP which suited the old TRV.
The new TRV is supplied with an adapter converting the radiator to 1/2
BSP which suits the new TRV. So I have to remove the old adapter. This
is the tricky part.
The old adaptor appears to have no cut-outs or shaping whatever to take
a spanner. It is totally smooth with only about 3mm between the
rediator casting and the captive nut. I cannot see how it can possibly
be removed.
Attach something else to it, and use that to unscrew it ?
How can I get this adpater off ?
Thanks,
Simon.


===============
Look inside - probably shaped for an allen key.

Cic.

In an earlier contribution to this discussion,
wrote:

I've removed the TRV from the radiator down-pipe and the adapter that
connects the radiator itself to the TRV. I'm left with the radiator
with adapter attached. The adapter has a captive nut
that was used to connect to the TRV body. The adapter is the same
finish as the old TRV and was obviously supplied with it. This adapter
converts to 3/4 BSP which suited the old TRV.
The new TRV is supplied with an adapter converting the radiator to 1/2
BSP which suits the new TRV. So I have to remove the old adapter. This
is the tricky part.
The old adaptor appears to have no cut-outs or shaping whatever to
take a spanner. It is totally smooth with only about 3mm between the
rediator casting and the captive nut. I cannot see how it can possibly
be removed.
Attach something else to it, and use that to unscrew it ?
How can I get this adpater off ?
Thanks,
Simon.

If you're talking about the "tail" (the bit which screws into the radiator)
it will almost certainly have a hexagonal hole inside, and requires an
appropriately sized Allen key to turn it.
--
Cheers,
Roger
______
Please reply to newsgroup.
Reply address IS valid, but is disposable in the event of excessive
spam.

If you're talking about the "tail" (the bit which screws into the radiator)
it will almost certainly have a hexagonal hole inside, and requires an
appropriately sized Allen key to turn it.
I did wonder about that. I tried to look into the hole, but not very
far.
I will try some allen keys of various sizes and see if they engage.
Cheers,
Simon.

On 9 Mar 2006 04:04:17 -0800, wrote:

If you're talking about the "tail" (the bit which screws into the radiator)
it will almost certainly have a hexagonal hole inside, and requires an
appropriately sized Allen key to turn it.
I did wonder about that. I tried to look into the hole, but not very
far.
I will try some allen keys of various sizes and see if they engage.
Cheers,
Simon.

It is a BIG one specially made for removing such fittings .

http://www.screwfix.com/app/sfd/cat/...07027&id=11467

On 9 Mar 2006 04:04:17 -0800, wrote:

If you're talking about the "tail" (the bit which screws into the radiator)
it will almost certainly have a hexagonal hole inside, and requires an
appropriately sized Allen key to turn it.
I did wonder about that. I tried to look into the hole, but not very
far.
I will try some allen keys of various sizes and see if they engage.
Cheers,

Some have a couple of ridges on the inside I believe, instead of a hex
shape.

You can buy a large hex key from most DIY shops for about £3 which
will do all types of fitting.

sponix

Some have a couple of ridges on the inside I believe, instead of a hex
shape.
You can buy a large hex key from most DIY shops for about £3 which
will do all types of fitting.
Got a proper radiator key from the plumbing supplies.
The square end did it, and there was loads of play when reversing
direction
(just to test it), so it's probably one with the ridges.
Bonus, the new TRV fits perfectly, which surprised me.
Success.
Cheers,
Simon.

In article .com,
wrote:
If you're talking about the "tail" (the bit which screws into the
radiator) it will almost certainly have a hexagonal hole inside, and
requires an appropriately sized Allen key to turn it.

I did wonder about that. I tried to look into the hole, but not very
far. I will try some allen keys of various sizes and see if they engage.

The sheds etc sell the correct one for pennies that also has a square
drive for tightening bleed nipple units. They're a bit larger than usually
comes in those sets.

--
*If tennis elbow is painful, imagine suffering with tennis balls *

Dave Plowman London SW
To e-mail, change noise into sound.