Use wit 1/8" NPT Standard grease coupler. You can leave the grease gun loaded with grease as is and it will be ready for use. Grease Gun. With air bleeder valve. The issue is a nature of the regular grease gun and regular nozzle, it is caused by the kept pressure in the hose/nozzle which will make the coupler clamp the zerk fitting tightly still, as long as there is no kept pressure in the hose/coupler, it will be easy for the user to remove the hose/nozzle from zerk fitting.