I'm looking to the wisdom of the panel for this bilge query.
I've got a primary bilge pump already that's manual and has it's own dedicated outlet above the water line and is operated from the cockpit.
I've also got enough spare pipe, a freebie Rule 500, a separate automatic switch and a spare one way valve from a project from a previous boat.
I don't want to tap into the primary bilge pump outlet for this as the Rule 500 has a smaller diameter pipe (19mm) than the big manual (38mm I think) as I like the idea of having a single dedicated bilge pump.
I'm thinking of connecting the small rule 500 to the 19mm pipe, placing the one way valve near the pump and creating a loop that's connected to the galley outlet via a diverter valve. By using the diverter I prevent any water coming back into the sink. The loop checks any errant water flow and failing that I've got the one way valve as my last line of defence.
By the way the galley outlet is below the waterline and currently only has a seacock on it and no loop (seacock closed when underway).
This secondary bilge pump is only for keeping the bilge dry whilst I'm away from the boat that's it. For anything serious I use the manual big boy bilge pump.
I think it's a valid approach as I really don't want yet another hole in my hull. In addition, as I have a low freeboard whatever tack I'm on with the outlet present will have the same problem of water coming up the pipe. I did think of feeding the outlet to the cockpit.
However, there are two outlets one is on the deck going to below the waterline. The others are at the base of the seats these are above the waterline but not by much and may suffer the same problem of water coming back or being added into the bilge.
What does the panel think?