Is There Another Way to Install a Fuel Pump? (Gasoline/Petrol)

[AKA-None]

Originally Posted by Scubaseas

You have it perfectly understood but you now have pressurized lines inside the boat and you violate ABYC standard 24.15.7 by having the pressure pump more than 12" from any engine.

The only way around this is to lift up to a container as many times as required to get to the point where you ca then pressurize to an engine. So you may need multiple lifts to get to the destination

[Scubaseas]

Originally Posted by AKA-None

The only way around this is to lift up to a container as many times as required to get to the point where you ca then pressurize to an engine. So you may need multiple lifts to get to the destination

A day tank on the roof could supply anything on the roof or below it without pressurizing anything. You could lift the fuel to a roof top day tank as a DuraLift can dry pull 120". Or you could push the fuel from the tank and still be in code as transfer pumps are not the same as constant duty pressure pumps but then you have a pressure line inside the boat. Both the outboards and the generators should be able to lift about 36" with their own supply pumps. No need to pressurize from the roof mounted day tank to generator or outboards. One pump, one tank. Personally I would plumb this line in NiCopp 1/2" tubing from tank select valves in the hulls to a Dura Lift 40303 lift pump (being used as a transfer pump)mounted next to a roof mounted day tank. I would put solenoids on the supply lines to the outboards if there is a tank above them and shut off (for service) valves on the pick up tube lines at the roof day tank (per code). But this way seems to me to have no pressure lines inside the boat , one day tank, one lift pump. No motor or engine is trying to lift beyond design and you are not violating codes. It does not have to be a big day tank as long as you rig automatic fill up. I am sure there are other ways to do this.