The present disclosure is generally related to vent assemblies. More particularly, the present disclosure is related to vent assemblies that are configured for pressure equalization of an enclosure.

The present disclosure is generally related to vent assemblies. More particularly, the present disclosure is related to vent assemblies that are configured for pressure equalization of an enclosure.

The mechanical breather valve includes a valve body, on which is installed one-way air inlet and outlet components. A tank, for environmental protection, is fitted with the breather valve and closed so that no volatile gas will be exhausted, when the pressure within is balanced with the outside. When the pressure within is negative, the one-way air inlet hole will draw air from outside to keep the balance of pressure. When the pressure within is increased, one-way air outlet hole will exhaust the additional air. When the tank is tilted or placed upside down, the breather valve can prevent the oil from flowing out of the tank for safe usage.

The mechanical breather valve includes a valve body, on which is installed one-way air inlet and outlet components. A tank, for environmental protection, is fitted with the breather valve and closed so that no volatile gas will be exhausted, when the pressure within is balanced with the outside. When the pressure within is negative, the one-way air inlet hole will draw air from outside to keep the balance of pressure. When the pressure within is increased, one-way air outlet hole will exhaust the additional air. When the tank is tilted or placed upside down, the breather valve can prevent the oil from flowing out of the tank for safe usage.

A pressure relief valve for a reservoir has a housing body forming first and second subchambers in fluid communication. A first opening in a bottom surface of the housing body forms a first valve seat. At least one second opening in the bottom surface forms a second valve seat along an outer perimeter. A diaphragm member is biased against the second valve seat and is configured to deflect off of the second valve seat under a negative pressure. A sealing ball is gravitationally biased against the first valve seat and raises off the first valve seat in response to a positive pressure. A cover sheet on an upper surface of the housing body partially encloses the chamber and traps the sealing ball in the first subchamber. The cover sheet includes an aperture aligned with the second subchamber providing an ambient pressure port coupled to ambient atmosphere.

A flow-through pressure-vacuum valve includes a valve body having a tank-side opening and a vent-side opening. A pressure relief valve (e.g., a ball held in a corresponding seat by gravity) is positioned within a first passageway through the body. The ball is moved from the first valve seat to open the first passageway when pressure at the tank-side opening exceeds pressure at the vent-side opening by a predetermined pressure differential. A vacuum relief valve is positioned within another passageway (e.g., a serpentine passageway). The vacuum relief valve (e.g., also a ball held in a corresponding seat by gravity) is positioned within the serpentine passageway. Analogously, the ball is moved from the valve seat to open the serpentine passageway when pressure at the tank-side opening is less than the pressure at the vent-side opening by a predetermined pressure differential.

A valve assembly for a fluid management system of a vehicle is provided The valve assembly includes: a valve body having an inner volume defining at least a first chamber, a second chamber, a breathing chamber in fluid communication with atmosphere, and a fluid medium flow path extending through the valve body, the fluid medium flow path having an inlet for receiving a fluid medium and an outlet for said fluid medium, said first chamber being at least partly disposed in the fluid medium flow path. A flow closing member is displaceable arranged within the valve body to control the flow of fluid medium from the inlet to the outlet via the first chamber. The flow closing member is displaceable between an open position, in which fluid medium may flow in the fluid medium flow path from the inlet to the outlet via the first chamber, and a closed position, in which said flow closing member prevents fluid medium to flow in the fluid medium flow path from the inlet to the outlet.

A valve assembly for a fluid management system of a vehicle is provided The valve assembly includes: a valve body having an inner volume defining at least a first chamber, a second chamber, a breathing chamber in fluid communication with atmosphere, and a fluid medium flow path extending through the valve body, the fluid medium flow path having an inlet for receiving a fluid medium and an outlet for said fluid medium, said first chamber being at least partly disposed in the fluid medium flow path. A flow closing member is displaceable arranged within the valve body to control the flow of fluid medium from the inlet to the outlet via the first chamber. The flow closing member is displaceable between an open position, in which fluid medium may flow in the fluid medium flow path from the inlet to the outlet via the first chamber, and a closed position, in which said flow closing member prevents fluid medium to flow in the fluid medium flow path from the inlet to the outlet.

A hydraulic system comprises a valve distributor comprising one or more sections connectable to respective uses, a supply apparatus comprising a pump and a supply channel, a discharge channel connected to a low-pressure tank, a use signal channel coming from the section of the valve distributor and further comprises a hydraulic regulating device connected via said channels which includes a 2-position 3-way proportional valve configured so as to provide operative fluid at a conditioned pressure, different with respect to the pressure that is characteristic of the operative condition of use, to the supply apparatus and at least one proportional pressure reducing valve.

A hydraulic system comprises a valve distributor comprising one or more sections connectable to respective uses, a supply apparatus comprising a pump and a supply channel, a discharge channel connected to a low-pressure tank, a use signal channel coming from the section of the valve distributor and further comprises a hydraulic regulating device connected via said channels which includes a 2-position 3-way proportional valve configured so as to provide operative fluid at a conditioned pressure, different with respect to the pressure that is characteristic of the operative condition of use, to the supply apparatus and at least one proportional pressure reducing valve.