Hi -
I have a similar problem. Old Madval AS bidet with a long chrome tube vacuum breaker (2 1/4 x 10" tall) that sits on a metal bracket attached to the back of the bidet. The vacuum breaker started to leak (when hot water is turned on only). All discontinued parts. Trying to figure out how to open the darn thing. The chrome cap on top won't pop off and doesn't seem to unscrew. No replacement parts available. Questions:
1) How do you open the vacuum breaker?
2) Any replacemenet VB available.
3) Any way to jury rig it to fix the leak?
It seems like I could just mount a replacement VB on the same bracket, but can't find any replacement part. The first step would be to open it and try to see if anything inside can be fixed, but I can't get any shop drawings to see how to disassemble it.
Thanks!
Chopper