bilge pump DQ
The depth to the pump impeller from the bottom of the bilge is at least 1/2". Beyond that, a pump will put water into a hose, but when the switch stops floating, it''ll shut off. Any water in the hose will drain back into the bilge. An antibackflow valve in the line would prevent this. Besides, separate float switches suck. Get a low amperage draw(500 gph or less) rule pump with internal switch for the bottom oof the bilge. That way bilge flotsam, hoses, etc., can''t lay across the switch. Throw away the float switch and mount your (probably) Rule 1500 8" to 10" above, with it wired to a manual switch. Anything happens, you''ve given it your best effort.