this looks really nice - do you have a photo showing it in-place ?
Yamaha YEB-321 Eb 4v TA tuba
Meinl-Weston 2141 Eb 5v FA tuba
Hirsbrunner Bb 3v TA compensated euph
Wessex Dolce Bb 3+1v TA compensated euph
Alto/tenor/bass trombones in various sizes/plugs
Those are the same brace parts as the numbers I sent to you previously - the threaded part is for .750 ID tubing, and is the same as used on the Conn 52J detachable 5th valve:
TU0806601 - Male Fitting - on 6th Branch
TU0806602 - Valve Casing Threaded Fitting
TU0806603 - Locking Ring Coupling - on 6th Branch
Those three parts make up the entire union.
All of those parts are available directly from Conn-Selmer, and I think Allied, as well.
Last edited by roweenie on Sun Oct 08, 2017 4:30 pm, edited 1 time in total.