Hydraulic Zerk Couplers

Zerk couplers are used as link between injection machines & packers DETAILS OF HYDRAULIC COUPLERS For use with most Hand-operated Grease Guns and Air-Powered EquipmentFits all 1/8" NPT threads 4500 PSI (310 Bar) Maximum Operating PressureBuilt-in Spring-loaded Ball Check Valve prevents Leak, Pressure Loss and Lubricant backupFour Hardened Steel Jaws for a Superior Seal and Longer LifePrecision fit. Slight pushing action snaps Jaws onto fittingsSmall outside diameter permits easy contact with recessed FittingsKnurled Body and easy flats for easy Installation and RemovalZinc Plated for Maximum Protection against Corrosion