Inside a tank body storing a liquid, a return filter is provided protruding downward from an upper surface of the tank body, and a substantially plate-like (plate-shaped) float is also provided that is inserted into the tank body and floats in accordance with change in a liquid surface of the liquid stored in the tank body. The float is provided with an opening larger than a diameter of a filter case, and in a plan view, the float is disposed between the tank body and the filter case.

An in-tank filter bowl de-aeration shroud for a hydraulic or oil reservoir includes an outlet shroud surrounding the filter bowl outlet at a proximal end thereof and having a shroud fluid outlet at a distal end thereof with a larger opening than an opening of the filter bowl outlet. The outlet shroud may be formed as or include a diverging member surrounding the filter bowl outlet at a proximal end thereof and having a diverging member fluid outlet at a distal end thereof, wherein the member diverges from the proximal end to the distal end thereof. The outlet shroud may further include a central deflector positioned within the diverging member and combining with the diverging member to form an annular passage to the diverging member fluid outlet.

An in-tank fuel pump assembly and mounting system is disclosed which may be configured for mounting inside a fuel tank. The assembly includes a pump housing, pump mounted to the housing, and pressure relief valve. The housing may comprise upper and lower pump housing units coupled together. The upper housing unit is configured for mounting to a tank opening, which in one implementation may be the fuel fill opening. The lower housing unit extends into the tank to approximately the bottom of the tank. A fuel fill fluid pathway is created through the housing for adding fuel to the tank while the pump assembly remains in situ. The upper housing unit may include a removable fuel cap. The pump housing may include an integral vapor trap.

A ballast water production method is provided. The method includes a filtering step that passes raw water supplied into a housing through a filter from a primary side that is upstream of the filter to a secondary side that is downstream of the filter; a volume-increasing step after the filtering step that increases a volume of water present in a space on the secondary side of the housing while the supply of the raw water into the housing is stopped; a pressurizing step after the volume-increasing step that pressurizes an inside of the housing from the secondary side while the supply of the raw water into the housing is stopped; and a rinsing step after the pressurizing step that passes a fluid through the filter from the secondary side to the primary side while the supply of the raw water into the housing is stopped.

A casing (20) housing a filter (10) includes a sealing portion (43) for sealing a gap between an upstream space (R1) and a downstream space (R2). The sealing portion (43) has a bridge shape separated from a wall surface of the oil channel and extending across the channel.

A strainer assembly for a fluid tank is provided. The strainer assembly includes an access plate configured to cover an opening of the fluid tank. The access plate has an elongated cavity and a stopper structure provided on an inner surface of the elongated cavity. The strainer assembly further includes a strainer having a locking assembly for securing the strainer to the access plate such that the strainer is positioned inside the fluid tank. The locking assembly includes a head portion and a body portion having an engagement structure. The body portion is positioned inside the elongated cavity such that the head portion abuts the access plate and the engagement structure engages with the stopper structure to restrict an axial movement of the strainer.

A suction oil filter for a transmission or combustion engine including an oil filter housing made of plastic and having at least one suction channel that can be connected to a suction side of a suction pump and at least one return channel feeding into the suction channel for a pressurized oil flow returned by the suction pump. The return channel is provided with at least one nozzle in the region of the opening thereof into the suction channel, as well as at least one pressurized oil supply pipe which is linked to the return channel and can be connected to a pressure side of the suction pump, and which is connected to the oil filter housing via at least one contour connection.

A gas-liquid separator includes: a housing including a gas inlet, a gas outlet, and a water storage section at a lower side of the gas inlet and the gas outlet; a collision wall provided inside the housing to collide with a gas that contains water introduced from the gas inlet to separate the water from the gas by adhering the water thereto while changing a flow direction of the gas; and a downflow wall provided inside the housing to introduce the water falling from the collision wall into the water storage section and change the flow direction of the gas.

A transmission oil filter includes a housing having a bottom cover defining a top side, a bottom side, and an inlet. A filter is disposed in the housing to filter contaminates and fines from the oil passing therethrough. One or more magnets is disposed on the top side surrounding the inlet so that oil passes by the one or more magnets when exiting the inlet to remove and trap fines from the passing oil. The bottom side has ridges disposed under the magnets to trap fines flowing under the housing.

A suction filter includes a filter element disposed in a fuel tank and filtering a stored fuel that is a fuel stored in the fuel tank by allowing the stored fuel passing the filter element into an inner space, a dividing wall element disposed to divide the inner space into a first space, into which a filtered fuel that is the fuel filtered by the filter element flows, and a second space, to which an intake port drawing in the filtered fuel is opened, and enclosing the first space together with the filter element and enclosing the second space together with the filter element, and a passage element including an inflow port opened to the second space and an outflow port to which an intake pressure is applied by the intake port and defining a flow passage through which filtered fuel flows from the inflow port toward the outflow port.