The problem is the possibility of a failure that will let the raw water pump
on your engine suck air through the salt water pump
. But then, all my salt water
needs come in one seacock, which can be closed from the cabin
above, and I consider that a safety
So, I'm going to take a middle path on this question. Yes, you can do it, but use reinforced hose, good connectors, double hose clamps, and a good pressure pump. Turn the salt water
on and off with a faucet, not by stopping the pump. Then, there is not a route
for air into the engine's system.
That's all easier if you use a small electric pump
, which will keep you from getting lazy and failing to close the faucet - it will keep right on pumping until you do. They do not use any of your limited energy budget
when not in use, and not much during your brief needs for salt
Good luck with it.