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Fuel
Systems
Equipment Standards
FEDERAL LAW
183.528 - Fuel stop valves
(b) If tested in accordance with the
fire test under Sec. 183.590, a fuel stop valve installed
in a fuel line system requiring metallic fuel lines
or “USCG Type A1” hose must not leak fuel.
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All fuel stop valves installed in metallic
fuel lines or Type A1 hose, whether they are of the manual
type or electrically operated and equipped with the required
means for manual operation, must withstand the 2-1/2 minute
fire test. Fuel stop valves must be tested in a fire chamber
described in 183.590(c) regardless
of where they are installed.
After the fire test there shall be no leakage
of fuel when subjected to the head as installed or a 36-inch
head of fuel applied on the inlet side of the valve. Internal
leakage such as could be expected with a soft seat type would
not be considered leakage as long as it remained inside the
fuel system.
Fuel stop valves installed in systems permitted
to use USCG Type B hose need not be
fire resistant.
FIGURE
16 - Leakage Test For Valves
TO COMPLY WITH THE LAW
- Will the fuel stop valves, electric
or manual, withstand the fire test in 183.590
conducted in a fire chamber, without external leakage?
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