Part of a complete fuel system to prevent unwanted spills. Fuel systems have evolved to reduce fuel vapor emissions and accidental spills. This inlet control valve (ICV) is a component of these new systems and allows the proper fuel fill rate and works with a fill limit valve to trigger automatic shut-off nozzles and eliminate splash back at the deckfill. The valve body can be installed in a 0—90 orientation along the 1 1/2" fill hose and is compatible with ethanol blended fuels. An optional heat shield, 99ICV000HS1, can be added to allow installation within engine compartments or close other high heat source areas. An ICV will also limit fuel from the tank from traveling into the fill hose during rough seas or while trailering. Key Features Helps to trigger automatic shut-off fill nozzles and prevent accidental spills caused by spitback Built in overpressure relief and over fill features when used with a complete Attwood system Can be installed in 0—90 orientation Compatible with ethanol blended fuels Allows fill rate of 4-18 gpm Two-Year limited warranty Instructions