Parker 047020002 Sintered Bronze Breather Vent, 1/8" NPT Male, 0.44" Length, 150 psi;

These low silhouette versions of the muffler / filter are useful where space is a problem and / or to prevent contamination. Use for vacuum relief or pressure equalization in gear boxes, oil tanks, reservoirs, etc. Non-corrosive. 7/16" Hex.