These countersink plug vents can be installed easily into single action cylinders, gear boxes, storage tanks or other vessels and valves, whenever pressure equalization is required. 

Supplied with standard male pipe thread with internal hex, unit can be easily installed with a hex key with little or no protrusion, Nickel-plated brass body and 40 micron is standard, optional 10, 90 and 150 micron filter element are available.