The Attwood Marine integrated fuel demand valve, used in conjunction with integrated fuel systems, is for below deck use, eliminates pressurized fuel from reaching fuel distribution 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.• Numbers Of Ports: 2• Type: Demand Valve• Color: Black• Material: Plastic• Quantity: Single Compatible With Ethanol Blended Fuels -4 Degree Fahrenheit To 176 Degree Fahrenheit Operating Temperature Plastic | Attwood Marine Fuel Shut Off Valve