I remember years ago autos having a filter canister on the bottom of the fuel pump I think only Fords but could be wrong.
I do not have any device like that. My fuel lines come from AS valve forward to the valves for changing one line to the other engine or merging then down to the Fram smallish filter which is bolted to a vertical piece of wood, (painted the same gray as all the original stuff Trojan put in. Up to here is all copper line. From the filter (Note I have much bigger and better filter water separators to be installed in same place). After is a rubber hose connecting to the fuel pump. (I had that hose made out of some chemical impervious hose with the flared fittings crimped on). From the fuel pump to the carbie is a solid steel line with double flares at both end. Pretty sure all plumbing is original.
Thank but no filters like the ones you depict Other than the Fram which does have an internal element that can be changed. I am opting for the can filters that screw on with a metal base bowl water collection.
All of that said she ran perfectly for 45 minutes with AS valves temporarily removed. I have new ones ordered but the old ones looked good I have changed the o ring on the end and will be relegated to emergency use.
AS Valve problems no AS valve runs perfect, think I know the problem, we shall see after I put new ones in.
Oh yes there is another line that runs from the fuel pump to the side of the carbie. It now is made of Viton and its purpose was and is to run fuel into the engine if the fuel pump diaphragm were to start leaking, this way it would not go into bilge. Auto fuel pumps have a bleed hole that will let it run to the ground, much safer than if it were to be in a boat putting gas in bilge.