The fuel demand valve, used in conjunction with portable fuel systems, is for above deck use only, eliminates pressurized fuel from reaching downstream fuel lines and your engine, and ensures that fuel is provided to the engine on demand rather than as a result of pressure in the tank. Additional features include: prevents fuel spray when connecting or disconnecting fittings at the engine. Compatible with ethanol blended fuels. Eliminates potential service and warranty issues related to pressurized fuel lines. Prevents engine flooding due to pressurized fuel lines. Fits hose size: 5/16" - 3/8".

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov