Big box of 15mm compression fittings - resale value vs. scrap?

Some people do use them, but I doubt plumbers spend their time rummaging at charity shops. Charities would likely scrap them, unless plumbing is something they already do (eg an animal shelter that builds water troughs for the animals)

I'd weigh them and work out the scrap value. Then throw them on ebay / Facebook marketplace as a job lot at some price above scrap. If listing as an auction, set the starting price as the scrap value then let it run. You might get a plumber buy them to restock their van.

Theo

Yes. probably about the same as in past years, solder is dying off slowly, many new build sites do not allow any 'hot work' on their sites, but, in recent years, press-fit has become the main pipe coupling system anyway, as it is so quick, and does not use heat. There is still a lot of use for compression fittings.

There is a CIC Rebuild Charity near us, who take in any type of building/diy materials. There must be a few similar ones around the Country.

Oh, scrap value is around £3 / kg, so unless you have a load, the monetary value is minimal. FB Marketplace at a third to half of retail value should sell them, that'd be at least double the scrap value.

I still have nearly all copper plumbing. I am sure they are still used, Try Ebay.

I used a couple of 15mm copper compression fitting recently when I replaced a radiator with a differently sized, and differently located one (that being the point of the exercise).

I made up the new pipe runs with soldered joints but, despite having drained down that part of the system and left it for 48 hours, it was still slowly dripping water from the points where I had cut the old pipe runs. That made soldered joints impractical so I used compression joints instead. Not my preferred method but much better than a leaky soldered joint.

solder yes, compression not so much (I tend to overtighten them) but I suspect most people who use them have enough in 'stock'

I don't do a lot of plumbing, but no way am I going to do any hot work in a timber framed house with a thatched roof. Compression for me.

Andy

Why ever not? I do it all the time. Or did installing the stuff. Once installed not much need.

You run a blow torch next to your thatched roof? Does your insurance company know?

Andy

I cant run a blow torch next to my thatched roof since there is fireproof board underneath all of it

But that isn't what toy said - you said 'in a timber framed house with a thatched roof'

I have such and I use a blowtorch when I need to solder pipework.

Obviously soldering mats are used near wood.