A fuel tank vent shutoff valve is provided with a leak countermeasure for preventing liquid fuel leaking from the vent shutoff valve into an evaporative emissions canister. In one embodiment, the vent shutoff valve includes a case disposed over a valve body. The case includes a floor surface surrounding an opening and a cover disposed over the case. The case also includes a flange structure extending away from the floor surface towards an inside surface of the cover. The inside surface includes an annular wall aligned over the opening and extending towards the floor surface of the case. The annular wall includes a first section having a first height that is greater than a second height of a second section. A free end of the first section extends past a free end of the flange structure of the case to prevent fuel from leaking into the evaporative emissions canister.

A blow case with an inlet pipe positioned to gravity direct debris to an outlet pipe. The inlet pipe having a discharge end sealed by gravity open clapper style check valve that is closed by activation of pneumatic pressure through a float style pneumatic valve. The check valve has a top mounted access port and aperture allowing for direct above ground servicing access to both the clapper inside the valve and has a removable clapper and access port for servicing the outlet pipe. The float style pneumatic valve is also top mounted for ease of service and removal and is remotely positioned from the outlet pipe to allow for removal of the valve for flushing of the debris from the blow case.

A fuel tank vent shutoff valve is provided with a leak countermeasure for preventing liquid fuel leaking from the vent shutoff valve into an evaporative emissions canister. In one embodiment, the vent shutoff valve includes a case disposed over a valve body. The case includes a floor surface surrounding an opening and a cover disposed over the case. The case also includes a flange structure extending away from the floor surface towards an inside surface of the cover. The inside surface includes an annular wall aligned over the opening and extending towards the floor surface of the case. The annular wall includes a first section having a first height that is greater than a second height of a second section. A free end of the first section extends past a free end of the flange structure of the case to prevent fuel from leaking into the evaporative emissions canister.

A pressure vessel apparatus according to exemplary aspects includes: a branched tube comprising a tube main body and three branches, wherein a side branch of the branches comprises a flared out portion connected to the tube main body; a liquid inlet opening disposed at a first branch of the branched tube; a liquid outlet opening disposed at a second branch of the branched tube; a gas inlet opening disposed at a third branch of the branched tube, wherein the third branch is the side branch; and a cover plate configured to mount a valve actuating mechanism in the branched tube, the cover plate configured to be joined to the branched tube at the third branch.

A water level controller for a hydroponic system includes a float shifting upward and downward with the culture solution, a first magnetic attraction element and an inlet valve for feeding in the culture solution. The float includes a seal and a second magnetic attraction element. The seal closes the inlet valve to stop feeding in water when the float ascends to a high water level, and moves way from the inlet valve to start feeding in water at a low water level. The second magnetic attraction element attracts the first magnetic attraction element to keep the seal closing the inlet valve at the high water level and to keep the seal moving away from the inlet valve at the low water level, until the buoyancy of the float is larger than the magnetic attraction between the second and the first magnetic attraction element thereby causing escape from each other.

A water level controller for a hydroponic system includes a float shifting upward and downward with the culture solution, a first magnetic attraction element and an inlet valve for feeding in the culture solution. The float includes a seal and a second magnetic attraction element. The seal closes the inlet valve to stop feeding in water when the float ascends to a high water level, and moves way from the inlet valve to start feeding in water at a low water level. The second magnetic attraction element attracts the first magnetic attraction element to keep the seal closing the inlet valve at the high water level and to keep the seal moving away from the inlet valve at the low water level, until the buoyancy of the float is larger than the magnetic attraction between the second and the first magnetic attraction element thereby causing escape from each other.

A blow case with an inlet pipe positioned to gravity direct debris to an outlet pipe. The inlet pipe having a discharge end sealed by gravity open clapper style check valve that is closed by activation of pneumatic pressure through a float style pneumatic valve. The check valve has a top mounted access port and aperture allowing for direct above ground servicing access to both the clapper inside the valve and has a removable clapper and access port for servicing the outlet pipe. The float style pneumatic valve is also top mounted for ease of service and removal and is remotely positioned from the outlet pipe to allow for removal of the valve for flushing of the debris from the blow case.