VPKG - VPKM Series
The VPK sectional progressive metering device is available in the designs VPKM (metric threaded connectors) and VPKG (inch threaded connectors). With their metering sections, VPKM and VPKG cover a nominal volume per outlet and cycle of 0.05 cm3 (twin section) to 0.6 cm3 (single section). The inlet of the progressive metering device is located at an inlet section. The outlets are at the downstream progressive metering device sections. The delivery ducts are sealed by elastic seals (plates). An end section is located downstream of the last progressive metering device section. All sections are interconnected with tierods. They seal the progressive metering device assembly. The volumetric flow fed via a tube is forcibly distributed in a predetermined ratio to the outlets, i.e., to the lubrication points or the downstream progressive metering devices. Pistons aligned in series meter the lubricant for two opposite outlets each and control the function of the neighboring piston. This way, the function of the sectional progressive metering device can be checked by monitoring any piston by means of a cycle indicator or piston detector. Optional integrated check valves integrated offer high functional reliability (at high or differing back pressures). They also provide accurate metering and safe blocking behavior, even for internal and external consolidation of lubricant outlets. Progressive metering devices distribute a lubricant quantity delivered by a pump to multiple outlets. The individual metering device sections determine the quantity distribution. The different output quantities within a metering device are achieved by using various progressive metering device sections or consolidating two or more outlets. For main metering device/secondary metering device systems, check valves must be used on the metering device outlets of the main metering device. For the VPKM and VPKG sectional progressive metering devices, progressive lubricant metering device sections for two connections (T = twin) or for one connection (S = single) are available. In case of single sections, the two opposite outlets are connected internally, whereby one outlet is closed. For the VPK progressive metering device, it is also possible to consolidate two neighboring outlets after the progressive metering devices have been completely installed. A progressive metering device of the series VPK consists of at least three to a maximum of twelfe metering sections.