3rdcoastpowersports
New member
Hello, I have two 2000gph bilge pumps and one 3700 gph bilge pump. I plan on putting the 3700gph directly under the battery's in the engine compartment. I plan on putting one of the 2000gph in the aft cabin and the other 2000gph pump in the galley (front cabin). My boat is water tight and does not leak so there is rarely if ever any water in the hull. These pump are just for an emergency situation so I would like each pump to have its own thru hull fitting. What size thruhull do I need for the 3700gph pump? what size thruhull do I need for the 2000gph pump? do I need to use seacocks in combination with the thurhull's? I plan on using an anti syphon lupe as long as I have the room. Im kinda a boating "Noob" so any advise is very much appreciated. My boat is a 1972 35foot chris craft commander salon