"Al" wrote in message
news:1119973229.7b47c562c0536a3cc6ea1419507bddbe@t eranews...
How would you shut off the fuel? Let's say in the case of fire. Al



The full picture is a bit more complex (isn't it always...)

This is a high-wing plane (Rans S6S). Both main tanks have breather pipes to
pressurise the tanks during flight. The fuel lines from the tanks flow into
separate entries of a fuel buffer tank (approx 1.5 Gallon) placed low, below
the luggage compartment. From the buffer tank a single feed goes through a
Facet pump (just in case), then through the fuel filter to a shut-off valve
near the firewall, within easy reach of the pilot. Then through the firewall
into a gascolator. Output of the gascolator goes to the mechanical pump on
the Jabiru engine, then to the carburettor.

The overflow of the gascolator goes through a check valve, then through a
return line into the buffer tank.

What I'm trying to determine is if I should use separate cut-off valves in
the lines from the main tanks to the buffer, or that I can use check valves
instead.

Rob