What does the safety valve do? 2004 R1150rs

[MOONDOG59]

What does the safety valve do?

 

[pauls1150]

It's supposed to not permit the exit of fuel from the cap in the event of a tip-over.

 

[MOONDOG59]

So the bike does have a tip over valve. Ok. Thanks.

 

[type_259]

Correct me if I am wrong but that technically looks more like a device to prevent fuel from exiting the vent line in the case of a tip over, not the fuel cap.

 

[pauls1150]

OOOPS - My error:
From the factory, the "vapor vent" line is connected (through the round plate) to the charcoal canister, which would be damaged (flooded) by the entry of liquid gasoline. If the canister is removed, then that line is typically routed down with the filler neck's water drain.
So, it's not to prevent fuel escaping if the bike is dropped, it only tries to save the charcoal.

 

[gsaddict]

That valve is called the rollover valve in the OE service manual.
It's called a safety valve on the parts fiche.

Normally it vents the tank. When the bike takes a dirt nap, it stops fuel from coming out the vent hose.
Euro & Canadian models did not come with a charcoal canister.

 

[MOONDOG59]

Excellent! Learn something new everyday.