The oil discharge is accurate, the metering part only discharges oil once in a fuel supply cycle, and the far, near, high, low, horizontal or vertical installation in the lubrication system has no effect on the displacement of the metering part, and the oil is forced to drain , The action is sensitive. And two seals are used to prevent backflow of the discharged oil. The metering parts and the connecting body are of separate structure. According to the oil demand of each lubrication point, the corresponding metering parts can be selected arbitrarily, and they can be freely combined with the PV series connecting body, and can be used in series or parallel. The oil outlet pipe diameter of the metering part is o4 and needs to be connected with the GN-4 oil pipe joint and the GB-4 double-cone ferrule.
