Fuel Selector Replacement

Peter_BDA · Posted: Thu Feb 10, 2011 2:10 pm Post subject: Fuel Selector Replacement

Hey all,

Looking to replace my fuel selector switch and SOMEWHERE on the site here is a picture (which I, of course can't find now!!) showing a set up done by a rigger with 3 lever handle switches/valves. Does it ring a bell with anyone?

Also welcome any advice on the subject!

Thanks!
Peter

Tim & Dave Kinghorn · Posted: Thu Feb 10, 2011 5:26 pm Post subject: Fuel Selection Module

In our photo album is a picture of our fuel switching module.

It probably isn't what you were looking for, but you might look at our photos to give you some ideas for your boat.

We wanted to be able to switch fuel tanks as well as direct the fuel to the main engine, the kicker, both main and kicker, an auxilliary line (to run gas to another source), or a vacuum gauge to check fuel line pressure.

We put the switching handles inside the port lazaret for protection as well as security. However, you could just as easily mount them outside.

Tim and Dave Kinghorn

Rob & Karen · Posted: Thu Feb 10, 2011 5:36 pm Post subject:

Maybe this is it. If so, it's in Doryman's album.

Peter_BDA · Posted: Thu Feb 10, 2011 5:59 pm Post subject:

Rob and Karen thank you! This is the photo I saw!

Many thanks!
Peter

Les Lampman · Posted: Fri Feb 11, 2011 2:57 pm Post subject:

Peter,

I've done several fuel selector systems like the one shown in the photo above. And while the installation was done neatly I will point out that the 180-degree turn at the top (2 90's) is very much less than ideal. If at all possible when you do yours try not to get radical turns introduced into the system.

The idea in simple form is to have a shut-off valve in each of the two fuel lines from the tanks and then to have one "cross-over" valve.

Just for further explanation...

Each of the two inline valves (in the lines from the tanks) are essentially selector valves for that particular tank. That is, they're they gatekeepers and they specifically determine whether any fuel leaves their attendant tank.

The cross-over valve is just that, it let's fuel cross-over from one tank to the engine on the opposite side (note that 3 valves are not necessary for a single engine boat).

- If you close both inline valves no fuel flows (regardless of how the crossover valve is positioned).
- If you open both inline valves, and the crossover is closed, each tank feeds one its own engine.
- If you close one inline valve and open the crossover, both engines will be feed by the tank with the open inline valve.
- If you open both inline valves and open the crossover almost all the fuel is supplied by each tank to its own engine...the crossover having very little impact on things.