October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Balance Valve

Valve is a pressure and vacuum relief valve. When fuel tank pressure rises above 0.7 - 2.8 psi (0.05 - 0.20 kg/cm² ), pressure relief valve opens and vents fumes to carbon canister. Vacuum relief valve opens when vacuum in tank exceeds a predetermined level and lets air in through carbon canister filter.