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Plumbing/heating tip

9fingers

9fingers

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I never knew about these despite having plumbing all my adult life

Many years back I retrofitted thermostatic radiator valves. Shopping around I chose Drayton TRV4 to standardise on

5AAFE9BC-E720-476C-BF5E-EA066694236A.jpeg

Last week a wet patch started on the carpet which I tracked down to a weeping gland

I was not looking forward to draining down the first floor circuit to swap out for a new valve.
Then I discovered that there is a plastic tool for unscrewing 18380519-1B53-411A-9AD9-B6F54F52A7F6.jpegthe gland.
The small is for gland changing and application of the other ends can be found on Youtube

Here is the new gland fitted to the tool ready for fitting

D1107148-ABE0-4F4F-BBD9-97B65EF5293F.jpeg

The gland is a composite of hard plastic and a moulded rubber seal. Only took minutes to change and no leaks during change although this was possibly more to do with the system pressure being zero and no need to drain down.
Repressurise and job done.

Hope this might help some one!
 
That is good forward planning. I was pleasantly surprised when my son showed me his new thermostatic rad valves, from memory they were on top? Of or incorporated a penny turn brill for decorating.
 
Can you post some links please.
Being a bit dim, I can’t work out what it does, but from your enthusiasm I think I would benefit from knowing.
 
Wow, who knew ?! As it happens I've just bought a box of those valves to replace all our TRV's, but I based that entirely on the fact thast we liked the look of them, and they were clearly a long established and well respected product.

Really nice to hear that there are a load more reasons to confirm that that we made a good choice!
 
Shout-out for Danfoss from me (amateur plumber).

I have used Drayton also (wouldn't criticize them), but we have several Danfoss ones, circa 1960-70 here that are still doing their job, probably from when the house first had CH installed. I think there's only two left now, as a couple have had the plastic go brittle and I've had to replace them. None have ever leaked, however (although other brands have). The old ones used to stick closed over the summer (easy to free up though), but the current ones are fine.

I like the current Danfoss design a lot, and they have dropped the silly spigots (requiring a notched key) they used to have, now only needing standard tools. They do need an Allen wrench to set the flow through the lockshield side (M5, IIRC), but they're neat, don't jam up (other brands do), and nowadays will go in either flow or return without fuss. Also, like Drayton, British made, AFAIK.
 
Thanks, it was the tool that had flummoxed me.
Hadn’t realised that TRVs were refurbish able.
 
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