The Grease Zerk Nipple Fitting facilitates controlled grease application while maintaining a sealed and contamination-free lubrication system. Its internal ball check valve prevents backflow and debris ingress, ensuring smooth operation and extended service life of lubricated components.Attributes:• Ensures secure and leak-free grease gun connections.• Internal ball check valve prevents contaminants from entering the lubrication system.Applications: The Grease Zerk Nipple Fitting reduces wear and tear, preventing premature component failure and maintaining overall equipment performance.