VPG-VPM Series
The VP sectional progressive metering device is available in the designs VPM (metric threaded connectors) and VPG (inch threaded connectors). With their progressive metering device sections (metering sections), VPM and VPG cover a nominal volume per outlet and cycle of 0.1 cm3 (twin section) to 1.2 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. Check valves integrated standard 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 the VPM and VPG sectional progressive metering devices, sections for two outlets (T = twin) or for one outlet (S = single) are available. In case of single sections, the two opposite outlets are connected internally, whereby one outlet is closed. Each section is equipped with a lateral and an upper outlet per side. Only one outlet can be connected at a time. The second outlet must be blocked by either a plug screw, a blockage indicator, or a lubricant nipple. If necessary, crossporting bars can also be connected to the upper outlets. A progressive metering device of the series VP consists of at least three to a maximum of ten progressive metering device sections.