Join Date: Feb 2011
Location: San Francisco Bay area
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Re: Outboard gas tank setup
The new tanks have a relief valve set at 5 to 7 PSI, and are tested to withstand that pressure. So no action is required, except to try and keep it out of the sun.
It's a really, really bad idea to keep a gas tank in a lazarette that accesses the bilge. If it is sealed from the bilge, and vents to the cockpit, that's OK.
Bristol 31.1, San Francisco Bay