Paul and Tony,
My Silverton has a porcelain toilet atop a 9 gallon holding tank. The tank is plumbed to a Y-valve, macerator and thru hull fitting on one branch and the deck pumpout fitting on the other. 9 gallons wasn't large enough for our needs so I did the following.
I Installed a 24 gallon holding tank below the galley sole between the stringers. The 9 gallon tank empties into the 24 by way of a macerator and the 24 is then plumbed to the Y valve which again goes to the pumpout deck fitting and a 2nd macerator with a thru hull. Both tanks have a vent line and the system has worked perfectly for me since I installed it over 3 years ago.
It took some work and some $$ but it was worth it...
My Silverton has a porcelain toilet atop a 9 gallon holding tank. The tank is plumbed to a Y-valve, macerator and thru hull fitting on one branch and the deck pumpout fitting on the other. 9 gallons wasn't large enough for our needs so I did the following.
I Installed a 24 gallon holding tank below the galley sole between the stringers. The 9 gallon tank empties into the 24 by way of a macerator and the 24 is then plumbed to the Y valve which again goes to the pumpout deck fitting and a 2nd macerator with a thru hull. Both tanks have a vent line and the system has worked perfectly for me since I installed it over 3 years ago.
It took some work and some $$ but it was worth it...