Also called volumetric type, it is a pressurized action type. The pressure grease delivered by the lubrication pump pushes the piston in the measuring piece, and the grease that has been stored in the chamber of measuring part forcibly pressur to the lubrication point. When the system is unloaded, re-storage the grease in the chamber to prepare for the next work.
The system must be operated intermittently and the associated lubrication pump must have an unloading function.
The lubrication pump has a working cycle, the measuring parts only make oil once, and the distance between the measuring parts is far, near, high, low, horizontal or verticalhas no influence for oil outlet.
Accurate measurement, quick action , Smooth drain, the check valve prevents oil from flowing back.