Dual float valve for fuel tank vent with liquid carryover filter

A venting control system for use with a fuel tank, the venting control system comprising:

• a housing;
• a control valve in the housing;
• the control valve having a control valve inlet and a control valve outlet;
• a liquid/vapor separator in the housing;
• the liquid/vapor separator communicating with the control valve outlet for preventing the passage of liquid fuel from a fuel tank;
• a flow management valve in the housing;
• the flow management valve including a flow valve inlet and a flow valve outlet;
• the flow valve inlet communicating with at least the liquid/vapor separator;
• and
• the flow valve outlet being connectable to a vapor recovery canister for controlling passage of displaced vapors from the fuel tank to a vapor recovery canister.

A venting control system for use with a fuel tank, the venting control system comprising:

• a housing;
• a control valve in the housing;
• the control valve having a control valve inlet and a control valve outlet;
• a liquid/vapor separator in the housing;
• the liquid/vapor separator communicating with the control valve outlet for preventing the passage of liquid fuel from a fuel tank;
• a flow management valve in the housing;
• the flow management valve including a flow valve inlet and a flow valve outlet;
• the flow valve inlet communicating with at least the liquid/vapor separator;
• and
• the flow valve outlet being connectable to a vapor recovery canister for controlling passage of displaced vapors from the fuel tank to a vapor recovery canister;
• and
• wherein the housing containing the control valve, the liquid/vapor separator, and the flow management valve.

A venting control system for use with a fuel tank, the venting control system comprising:

• a housing;
• a control valve in the housing;
• the control valve having a control valve inlet and a control valve outlet;
• a liquid/vapor separator in the housing;
• the liquid/vapor separator communicating with the control valve outlet for preventing the passage of liquid fuel from a fuel tank;
• a flow management valve in the housing;
• the flow management valve including a flow valve inlet and a flow valve outlet;
• the flow valve inlet communicating with at least the liquid/vapor separator;
• and
• the flow valve outlet being connectable to a vapor recovery canister for controlling passage of displaced vapors from the fuel tank to a vapor recovery canister;
• and
• wherein only the control valve directly communicates with a fuel tank.

A venting control system for use with a fuel tank, the venting control system comprising:

• a housing;
• a control valve in the housing;
• the control valve having a control valve inlet and a control valve outlet;
• a liquid vapor separator in the housing;
• the liquid/vapor separator communicating with the control valve outlet for preventing the passage of liquid fuel from a fuel tank;
• a flow management valve in the housing;
• the flow management valve including a flow valve inlet and a flow valve outlet;
• the flow valve inlet communicating with at least the liquid/vapor separator;
• and
• the flow valve outlet being connectable to a vapor recovery canister for controlling passage of displaced vapors from the fuel tank to a vapor recovery canister;
• and
• wherein only the liquid/vapor separator directly communicates with the flow management valve.

A venting control system in combination with a fuel tank for use with a fuel tank the venting control system comprising;

• a housing;
• a control valve in the housing;
• the control valve having a control valve inlet and a control valve outlet;
• a liquid/vapor separator in the housing;
• the liquid/vapor separator communicating wit the control valve outlet for preventing the management of liquid fuel from a fuel tank;
• a flow management valve in the housing;
• the flow management valve including a flow valve inlet and a flow valve outlet;
• the flow valve inlet communicating with at least the liquid/vapor separator;
• and
• the flow valve outlet being connectable to a vapor recovery canister for controlling passage of displaced vapors from the fuel tank to a vapor recovery canister.

A venting control apparatus for use with a fuel tank, the venting control apparatus comprising:

• a housing;
• the housing defining a first valve chamber;
• the housing defining a first valve inlet and a first valve outlet communicating with the first valve chamber;
• a first float valve assembly in the first valve chamber;
• the housing defining a second valve chamber;
• a second float valve assembly in the second valve chamber;
• the housing defining an intermediate passage providing communication between the second valve chamber and the first valve chamber;
• the housing defining a second valve outlet communicating with the second valve chamber;
• the housing defining a third valve chamber;
• the housing defining a third valve outlet;
• a third valve assembly in the third valve chamber;
• the third valve chamber communicating with the first valve outlet and the second valve outlet;
• the housing defining a fourth valve chamber;
• the fourth valve chamber communicating with the third valve assembly through the third valve outlet;
• a fourth valve assembly in the fourth valve chamber;
• and
• the fourth valve chamber communicating with a fourth valve outlet defined by the housing.

A venting control system for use with a fuel tank, the venting control system comprising:

• a housing;
• a fuel vapor discharge valve operatively retained in the housing;
• a run-loss valve retained in the housing;
• the fuel vapor discharge valve communicating with a fuel tank;
• the run-loss valve communicating with at least the fuel vapor discharge valve;
• and
• an overlying valve communicating with the fuel vapor discharge valve and the run-loss valve.

A venting control system for use with a fuel tank, the venting control system comprising:

• a housing;
• a fuel vapor discharge valve operatively retained in the housing;
• a run-loss valve retained in the housing;
• the fuel vapor discharge valve communicating with a fuel tank;
• the run-loss valve communicating with at least the fuel vapor discharge valve;
• and
• an overlying valve communicating with the fuel vapor discharge valve and the run-loss valve;
• and
• a low pressure recirculation system communicating with the overlying valve.

A venting control system for use with a fuel tank, the venting control system comprising:

• a housing;
• a fuel vapor discharge valve operatively retained in the housing;
• a run-loss valve retained in the housing;
• the fuel vapor discharge valve communicating with a fuel tank;
• the run-loss valve communicating with at least the fuel vapor discharge valve;
• and
• an overlying valve communicating with the fuel vapor discharge valve and the run-loss valve;
• the overlying valve including a float baffle retained in the housing;
• the fuel vapor discharge valve having a discharge exit port and a discharge float displaceably positioned proximate to the discharge exit port;
• the run-loss valve housing a run-loss exit port and a run-loss float displaceably positioned proximate to the run-loss exit port;
• and
• the float baffle being configured for overlying the discharge exit port and the run-loss exit port for preventing escape of liquid fuel from the venting control system.

A venting control system in combination with a fuel tank for use with a fuel tank, the venting control system comprising:

• a housing;
• a fuel vapor discharge valve operatively retained in the housing;
• a run-loss valve retained in the housing;
• the fuel vapor discharge valve communicating with a fuel tank;
• the run-loss valve communicating with at least the fuel vapor discharge valve;
• and
• an overlying valve communicating with the fuel vapor discharge valve and the run-loss valve.

A venting control system for a fuel tank comprising:

• a housing;
• a first float valve in the housing for selective communication with a fuel tank;
• a second float valve in the housing for selective communication with the first float valve;
• and
• means for trapping liquid positioned proximate to and communicating with the first float valve and the second float valve for blocking passage of liquid fuel from the first float valve and the second float valve.

A venting control apparatus for use with a fuel tank comprising:

• a housing defining a first chamber communicating with the fuel tank a second chamber communicating with the first chamber, and a third chamber communicating with the first and second chambers;
• a first float valve retained in the housing for travel in the first chamber;
• a second float valve retained in the housing for travel in the second chamber;
• the first and second float valves generally oriented in the housing and moving along corresponding generally parallel first and second axes of travel;
• a third float valve retained in the third chamber in the housing;
• and
• the third float valve operating generally long a third axis of travel generally parallel to said first and second axes of travel.