BV-Series low profile breather vent have many applications. 

They are most often used on single acting cylinders or valves to prevent dirt and foreign particles from entering ports open to the atmosphere. 

Common uses can also be found on vacuum relief or pressure equalization for gear boxes, crank cases, storage tanks or other vessels whenever pressure equalization is required.

Supplied with standard male pipe threads, they can be installed, with little protrusion, as a flat integral part of the equipment.