Can anyone identify this TRV body?

[paddingtonbear]

Moved into a flat where the previous occupant has broken off the heads of all the TRVs (thanks!)

All I'm left with is one of these on each radiator. It would be brilliant if someone could identify the brand so I can try just screwing on a replacement head....

One unusual feature (to my non-professional eye) is that the compression joint on the base of the TRV body has female threads on the body and male threads on the 'nut'

I've attached a photo

 

[endecotp]

I think that thread for the head attachment is Honeywell.

 

[JohnD]

it may also be worth trying to meet the neighbours as, in flats, they might have had the same system installed, and it might still be present.

Look at the lockshield valves on the other end of the rads. Very often the same brand is fitted and the cap may identify it.

 

[oilboffin]

I'd say honeywell too

 

[paddingtonbear]

Thanks all - looking online it looks as though Honeywell bodies have an H stamped on the side?

I came across Myson, which looks like a possibility. Might try the local supplier

 

[endecotp]

It doesn't really matter who made the valve body; what matters is which heads will fit it. The honeywell valves use a 30mm diameter x 1.5mm pitch thread, and apparently the vertical distance from the top of the thread to the top of the pin should be about 14mm; is that what you have?

 

[rules&rulers]

Orlki make that or have that valve made for them.
was a thread here before,was it you? http://www.diynot.com/diy/threads/thermostatic-radiator-valve-head-wont-fit.461595/
These people may be of help for a replacement head, https://www.heatingcontrolsonline.c...-c-28_51.html/orkli-replacement-trv-head.html

If all above fails its new valves time.
good luck.

 

[paddingtonbear]

Thanks creamcrackers!

Previous thread not me but very helpful

Btw I measured the threads and they are 28mm OD

 

[endecotp]

I measured the threads and they are 28mm OD

28mm-to-30mm adaptors are available, if for some reason you can't find a suitable 28mm head.