Was curious to move to hard pipe but I am only working off a small 2L setup. My cold trap has a gl-14 and was ideally looking for a gl-14 to kf-16 adapter if such a thing is possible/exists. Having trouble finding anything but barb adapters at the gl-14 size.
try drawing the adapter you’re after. how are you planning on capturing the GL nut?
use kf-16 to 1/4 barb. and a short piece of tube.
or 3/8" barb if you’re going to push the tube over the GL-14 threads.
better yet have a glass-blower replace those GL fittings with 24/40 or larger ground glass. then go from there to KF-25.
note that the bore on most PTFE adapters from ground glass to KF is rather restrictive.
Yeah I think beaker and wrench sells them. I would suggest sending your trap in for repair. We can just replace that GL-14 with a larger size joint and you can use a 24/40 to kf-16 or kf-25 adapter. That will give you the best results as the gl-14 is going to be pretty restrictive.
You can just get a kglf to Barb really. The hose still goes on same way. You don’t need kf to gl