Thermostatic TRV, can the head just be replaced

[Steven Campbell]

The thermostatic head appears to have broken from one of my radiators.
Given that I don't want to have to drain the system etc, can I just change
the actual head part?
Are these interchangeable with other makes?

The TRV is a Bulldog make. Every page I have looked at, it comes as a set
with the lockshield.

Thanks.

[Roger Mills]

You can certainly buy spare heads for more expensive TRVs such as the
Drayton TRV4 - but I don't know about Bulldogs (apparently made by
Pegler). Since you can buy the whole thing, including a lockshield, for
about �12, maybe you can't buy just the head.

Don't assume you can mix and match with other makes - that is unlikely.

I would buy a complete new TRV of the same type (if you can't just buy
the head) and then put the new head which comes with it onto your
existing valve, which you can do without needing to drain down.
--
Cheers,
Roger
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[chris French]

In message <8OudnUCH1aDknFvR...@brightview.co.uk>, Steven
Campbell <spam@away.?.invalid> writes

>The thermostatic head appears to have broken from one of my radiators.
>Given that I don't want to have to drain the system etc, can I just change
>the actual head part?

Yes, though you might find it difficult to source it, and if you can it
probably won't be much cheaper - it may even cost more than a complete
unit. Certainly when I went looking for a replacement head for a Drayton
TRV4 a few years back it was cheaper and easier to just buy a new
complete unit, and swap the head over

>Are these interchangeable with other makes?

Not necessarily, though some might be.

>
>The TRV is a Bulldog make. Every page I have looked at, it comes as a set
>with the lockshield.
>

They do seem to be just available as the set, but for TRV's they are
relatively cheap, so maybe that is whay, since a new set is online for
around �12 I'd just go for that, and swap the head.
--
Chris French

[Ericp]

On Mon, 25 Oct 2010 23:15:14 +0100, "Steven Campbell" <spam@away>
wrote:

If it's a Pegler you may be lucky and find it is generally
interchangable. If you have a Wickes near you it may be worth a visit
as they sometimes have dump bins of trv heads for a few pounds.

[Steven Campbell]

"Ericp" <er...@blueyonder.co.uk> wrote in message
news:g27cc6pheg00reb8u...@4ax.com...

Thanks guys but it was an epic fail on my part.
All the TRV's on my rads are Bulldogs except the one that broke!! Trust me
to just check the make of the one next to the PC!!
I remember now I bought and fitted that TRV myself as it was on a towel
radiator that I already had installed before getting my central heating
changed!!

The one that broke is a "Lifestyle" one (probably bought from B&Q) but I've
managed to track a replacement head down to
http://www.heatingcontrolsonline.co.uk/acl-drayton-lifestyle-rt212-replacement-head-p-690.html

Thanks again.