Gas shut off

gtyee

On my 310 it has port, starboard and generator shut off, should the crossover be in the position ?

Handymans342

Closed

gtyee

That's it is now, just wasn't sure. Thanks Handymans342

Ian

Why closed out of interest? I thought having cross over open allows for consistent draw from both tanks (no gen here)

Handymans342

Good question. There has to be a reason or there would not be a valve

Dream_Inn

I do it so when I fill up I know if one engine is burning more than the other.  Although, with the genny pulling off of the stbd, it sometimes makes it a little more difficult to know exact numbers.

Ian

I thought the reason was to isolate a bad tank if needed. I was told to have all 3 open.

Liberty44140

So you want that middle valve closed so that the port engine draws from the port tank and the stbd draws from the stbd tank. If it is open you will pull more from one tank than the other. When I had my 310 I noticed that one tank always went down faster than the other. I assumed a bad sender. Then I realized the middle valve was open so the engines pulled more from one tank than the other (path of least resistance). Closed mid valve and both gauges dropped at the same rate. It is there so that you can pull from the other tank if you have to in a case of bad fuel or an empty tank.

Ian

Odd experience you've had. My port sender has always been an issue so always filled each side the same if by x gallons or y dollars. When I did the NYC trip I filled them each stop and they were even in what I had to put in each side.

They are all different.

frenchship

Here is the Infos from Rinker.

Bizmark

So Rinker is saying you never open all three valves at the same time?..interesting.

Ian

Apparently. not sure why, I was told to leave all open and close only to isolate as needed.

Liberty44140

You can leave them all open, shouldn't hurt anything just know that you may pull more from one tank than another. 

Ian

From experience it doesn't appear to

LaRea

If one tank gets contaminated, and the crossover valve is open, it could contaminate the clean tank.  Sure, it's a small risk, but why take the chance.  You have nothing to gain by leaving the crossover valve open.