Breather vent for hydraulic tank

The vent of any one of claims 1 and 3-20, wherein the mounting structure defines a bayonet coupler that is configured to couple to a mating bayonet connector.

The vent of any one of claims 1-2 and 4-20, the vent housing defining a first end and a second end, wherein the filter assembly is towards the second end.

The vent of any one of claims 1-3 and 5-20, wherein the inlet relief valve and the outlet relief valve are integrated in a single component.

The vent of any one of claims 1-4 and 6-20, wherein the inlet relief valve comprises an elastomeric cross-slit valve.

The vent of any one of claims 1-5 and 7-20, wherein the inlet relief valve comprises an elastomeric valve having a displaceable sealing lip sealably surrounding an inlet opening.

The vent of any one of claims 1-6 and 8-20, wherein the outlet relief valve comprises:

• a plug sealably disposed across an outlet opening;
• and
• a spring compressibly disposed between the plug and the vent housing, wherein the plug is translatable away from the outlet opening.

The vent of any one of claims 1-7 and 9-20, wherein the outlet opening surrounds the inlet opening.

The vent of any one of claims 1-8 and 10-20, wherein the inlet relief valve is directly coupled to the outlet relief valve.

The vent of any one of claims 1-9 and 11-20, further comprising a filter casing surrounding the filter assembly, the filter casing comprising an outer cap and an inner cap, wherein the outer cap and the inner cap are secured around the filter assembly.

The vent of any one of claims 1-10 and 12-20, wherein the outer cap defines the mounting structure.

The vent of any one of claims 1-11 and 13-20, wherein the outer cap and the inner cap form a snap fit connection around the filter assembly.

The vent of any one of claims 1-12 and 14-20, wherein the second opening is defined between the outer cap and the inner cap.

The vent of any one of claims 1-13 and 15-20, wherein the inlet relief valve and the outlet relief valve are disposed between the inner cap and the outer cap.

The vent of any one of claims 1-14 and 16-20, wherein the inner cap defines the first opening and the first airflow pathway.

The vent of any one of claims 1-15 and 17-20, wherein the first airflow pathway defines a tortuous path from the first opening towards the inlet relief valve.

The vent of any one of claims 1-16 and 18-20, wherein the filter assembly comprises first filter media surrounding a central opening and the inlet relief valve and the outlet relief valve are disposed in the central opening.

The vent of any one of claims 1-17 and 19-20, wherein the first filter media comprises pleated filter media having first pleat folds abutting the central opening and second pleat folds radially outward from the first pleat folds.

The vent of any one of claims 1-18 and 20, further comprising a second filter media surrounding the first filter media, wherein the first filter media and the second filter media are arranged in a series in the second airflow pathway.

The vent system of any one of claims 21 and 23-26, further comprising a strainer disposed in the mount opening, the strainer configured to extend from the vent mount into the liquid tank in the axial direction, wherein the strainer is configured to receive the first end of the vent.

The vent system of any one of claims 21-22 and 24-26, wherein the mating structure comprises a bayonet connector.

The vent system of any one of claims 21-23 and 25-26, wherein the mating structure comprises a vent sealing surface.

The vent system of any one of claims 21-24 and 26, wherein the vent mount further comprising a plurality of radially extending deflectors that are configured to partially obstruct the second airflow pathway.