07.13 Do I need an anti-siphon valve on the engine suction line at the day tank?

Anti-siphon valves may be required in the fuel supply piping from the day tank to the generator. The anti-siphon valve is considered a safety device if the fuel hose connections at the generator were to fail.

The preferred method of providing the anti-siphon protection is a DC powered normally closed solenoid valve that is activated directly by the generator controls. Spring loaded anti-siphon valves used for aboveground tanks are typically not used in this application because of the increased suction burden that they place on the engine fuel pump.