Hello. I have a cold radiator with a Drayton TRV fitted, not one of the current type (TRV4). I have taken the head off, leacing a black plastic adaptor piece that very much looks like a tap hosepipe adaptor left on the valve body, presumably concealing the pin, that I'm hoping is stuck. How does this plastic piece come off? Thanks.
Older types of Drayton TRV's
- Thread starter WesleyP
- Start date
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Can you post some pics so we understand what you are talking about?
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Turn the silver knurled ring anticlockwise as you look down to remove what's left of the head. You may need to use grips if it's tight.
If it's a TRV3 you may be able to get a Drayton conversion kit so you can use a TRV4 head. Wickes are advertising a Drayton TRV3/TRV4 Integral Convert Head for £28.
I would try Drayton first: customer.care 'at' invensys.com
If it's a TRV3 you may be able to get a Drayton conversion kit so you can use a TRV4 head. Wickes are advertising a Drayton TRV3/TRV4 Integral Convert Head for £28.
I would try Drayton first: customer.care 'at' invensys.com
Thanks for all that help. I took the wrong piece off, I thought that the silver knurled ring was part of the valve body, so now have to reassemble the top! Plunger for the TRV is stuck in. A bit of a scrape around the edge and the application of WD40 has lifted it a bit, water flowing very slowly though as the valve body has got hot. How far does the plunger normally come out? Thanks.
Pin should only move a few MMs. Press down on the pin with something metal and let the pin pop up. Keep doing this until it moves freely.
To get an idea of how far the pin should move, take the head off of another valve that's the same model (carefully!
) and see how far the pin moves on a valve that works properly.
To get an idea of how far the pin should move, take the head off of another valve that's the same model (carefully!
) and see how far the pin moves on a valve that works properly.
Beat me to it.
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