I have a second hand espresso machine (this or similar - 800ESXL) and a valve in it has broken. From a bit of research, it looked like Breville knew the part was prone to failure and they quickly made it obsolete without a compatible replacement. I can't find a new replacement for it, so following advice here, I thought it'd be worth it to try gluing it back together.
I don't see any visible markings on the piece to indicate what type of plastic it is. How can I fix this as robustly as possible in a food safe way? I think this is before the boiler, so shouldn't be exposed to particularly high temperatures.
I'm looking for both whether this is possible from a materials perspective (is there a go-to general product for adhering "plastic" without knowing what type it is?) and a technique perspective - this is a small diameter piece and is threaded on the outside, so adhering the pieces as cleanly as possible would also be important.