Grade Valve...
When used in conjunction with a fill limit vent valve, allows proper venting when the fuel tank is located in unusual angles
Prevents liquid fuel reaching the carbon canister or vent system during vessel operation, trailering and storage
Integrated impact protection feature
Compatible with Ethanol blended fuels
Passes all USCG CFR 33 and ABYC H-24 fire test requirements
2 year warranty
Patent Pending.