Tested out my fuel transfer system this afternoon and have come up with a
question. I know the USCG requires an antisiphon device or a shut off valve
on the fuel tank and a second shut off at the engine if the run is over 12'
but what about auxillary tanks?

I have two 42 gallon auxillary tanks and a 26 gallon "Day tank". The
pickups of the auxillaries lead up hill to the transfer pump and then to a
pair of Racor 1000FG filters before going to the day tank. With the
antisiphon on the auxillaries I get about 2 GPM transfer rate. With the
antisiphons removed I get 4 GPM. What I am thinking about doing is to
replace the antisiphons on the auxillaries with shut off valves and just
leaving them open unless the boat will be idle for an extended period. Is
that in compliance with the rules?

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com