Y-valve
Bud: A couple of things. I just changed almost my entire waste system plumbing on a '85 31' (not a fun job, but has paid off big time). First of all, listen to Peggie Hall! She knows more about heads, etc. than just about anyone in the business. Second, purchase the very best Y-valve you can get your hands on. I made the mistake a number of years ago of replacing mine with another cheepie and it worked for all of one season. This time around, I bought the "Jabsco" Diverter Valve, which although not the most expensive, did have adjustable discharge barbs which worked best for my system. The other one I'd recommend is the "Whale" diverter valve, which while expensive at almost $80, is worth every cent. Third, LISTEN TO PEGGIE HALL!!!! Smooth, odor-free sailing!!Tim Leighton