I didn't want to stae the other thread. Assuming I have decided on a lavac manual head, I would like input into the best / simplist way to hook it up, to allow: 1. direct pumpout to seacock (via y-valve) 2. pumping into the holding tank 3. dockside pumpout 4. manual pumpout of holding tank to seacock. I don't require the bilge pumpout, as I have another maual bidge pump.
The lavac site lists options 3 and 4, but it seems like something is missing in option 4 (another y-valve to select direct discharge to seacock or into holding tank, and the fact that the stop valve seems like it would prevent dockside pumpout, to me anyway)
The lavac site is: