Products > Grease Fittings & Lubrication > Zerk Grease Fittings > Breather Fittings

Breather Fittings

Breather fittings, or breather valves, are designed to maintain proper atmospheric pressure in transmissions, differentials, gear boxes, speed reducers, and more. The simple design of these zerk fittings provides a moisture barrier while maintaining air flow efficiency and reducing debris entry. Some grease zerk breather fittings are additionally equipped with a felt filter for increased protection against contamination.

  • Offered in corrosion resistant zinc clear and zinc yellow finishes
  • Allows unrestricted bi-directional airflow
  • Prevents gasket distortion between mating parts by maintaining proper pressure in sealed assemblies
  • Visit our Product FAQs to learn more about Grease Fittings
Breather Fittings

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