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NotThamesWater in reply to @stevo_com

The pipes are about crusty going into the old TRVs, what's the best way to clean those up/prep them for a good fit with the new ones?

It's a compression fit from the pipe to the valve, isn't it - why not wire wool & ptfe.

Cue teeth sucking & wincing faces from all the plumbers.

If you're draining the system, though, you may as well replace all of the valves - I did 9 in about 2 hours.

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stevo_com in reply to @NotThamesWater

I don't think there's PFTE on either the interface from the pipe to the valve, or the valve to the rad tail. It feels to me that there should be, but then what the fuck do I know. If there isn't, then it needs to be a good fit, surely, hence the prep question.

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