Vogel VPBM-7 Progressive Block Metering Device
The Vogel VPBM-7 is a fixed-dose progressive feeder block for Vogel/SKF progressive and MonoFlex-type prelubrication systems. This aftermarket cross-reference unit has 7 distributor sections, which means up to 14 outlets. Each section serves two opposite outlets. The dose per outlet is fixed and non-adjustable at 0.20 cm3 per cycle. The VPBM-7 is part of a family that runs from 3 to 10 sections, covering 6 to 20 outlets.
This is an aftermarket metering device, not manufactured, sponsored, or endorsed by SKF. VPBM-7 and VPBG designations are for cross-reference identification only. SKF, Vogel, and MonoFlex are trademarks of their respective owners.
How the VPB Meters Lubricant
The VPB works on the progressive principle. All sections meter in sequence, one after another. Each outlet delivers 0.20 cm3 per cycle. Opposite outlet pairs are served by the same section. Under difficult operating conditions, the catalog minimum is 0.13 cm3 per outlet. If any outlet is blocked, the piston chain stops. That is why monitoring options like ZY, P2, and P3 exist.
Progressive feeders like the VPBM-7 fit into a larger centralized system. To see how they work with pumps, lines, and other components, read how progressive feeders fit a centralized system.
Sections, Outlets, and the VPBM-7 Size
The digit after the type is the section count, not the outlet count. VPBM-7 means 7 distributor sections. Each section serves 2 opposite outlets, so 7 sections give up to 14 outlets. The family runs from 3 to 10 sections, which means 6 to 20 outlets.
Family size range:
3 sections = 6 outlets
4 sections = 8 outlets
5 sections = 10 outlets
6 sections = 12 outlets
7 sections = 14 outlets
8 sections = 16 outlets
9 sections = 18 outlets
10 sections = 20 outlets
To count outlets for a machine layout, multiply the section count by two. Then assign each outlet to a lubrication point. The VPBM-7 covers up to 14 points from one block.
Threads: VPBM Metric, VPBG Inch-format G 1/8
VPBM uses M10 x 1 threads for inlet and outlets. VPBG uses G 1/8 threads for inlet and outlets. The thread choice must match the existing line standard on the machine. Adapters are not a substitute for correct thread choice. If the main line and fittings are metric, choose VPBM. If they are G 1/8, choose VPBG.
Pressure, Flow, and Cycle Limits
Maximum operating pressure is 200 bar for oil and 300 bar for grease. Maximum inlet flow is 400 cm3/min. Recommended maximum cycle frequency is 200 cycles/min. Staying within these limits helps the block meter consistently.
Progressive blocks meter in sequence, unlike dual-line metering valves that use two supply lines and a pressure changeover. For a comparison, see dual-line metering valves contrasted with progressive blocks.
Monitoring Options: ZY Indicator, P2 and P3 Detectors
The ZY cycle indicator shows movement of the progressive piston chain. The catalog specifies the ZY indicator with a check valve. P2 and P3 are piston detectors for electrical monitoring. They send a signal when the piston chain stops or moves.
Temperature windows depend on the configuration. Basic design is -25 to +90 °C. With ZY cycle indicator, the range is -20 to +70 °C. With P2 or P3 piston detectors, the range is -25 to +85 °C. Later catalog editions show wider general ranges, so confirm against the exact ordering code.
Materials are tinned steel inlet and separator parts, galvanized steel piston and section plates, and NBR seals. A stainless steel version is an option. The catalog associates stainless execution with the ZY indicator configuration.
In a MonoFlex-type prelubrication arrangement, the VPBM-7 often works with a main line manifold. One example is the MonoFlex VL junction manifold that distributes the main line. For a quotation on a VPBM-7 with monitoring, contact us here.
Frequently Asked Questions
What does VPBM-7 mean?
VPBM is the metric thread version, and the 7 is the section count. Seven sections give up to 14 outlets.
What is the difference between VPBM and VPBG?
VPBM has M10 x 1 inlet and outlet threads, and VPBG has G 1/8. Choose based on the existing line standard.
Is the dose adjustable?
No. The dose is fixed at 0.20 cm3 per outlet per cycle, with a catalog minimum of 0.13 cm3 under difficult conditions.
What is the maximum pressure?
Maximum operating pressure is 200 bar for oil and 300 bar for grease. Do not exceed these limits.
What are the maximum flow and cycle rate?
Maximum inlet flow is 400 cm3/min. Recommended maximum cycle frequency is 200 cycles/min.
What is the temperature range?
Basic design is -25 to +90 °C, and the ZY indicator lowers the upper limit to +70 °C. P2 and P3 detectors allow -25 to +85 °C.
What are ZY, P2, and P3?
ZY is a cycle indicator with a check valve. P2 and P3 are piston detectors for electrical monitoring of chain movement or stoppage.
Is a stainless steel version available?
Yes, stainless steel is an option. The catalog associates stainless execution with the ZY indicator configuration.
What happens when an outlet blocks?
The piston chain stops, so all metering stops. Monitoring options detect this and send a signal.
Is this an SKF product?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
For a VPBM-7 quotation, contact us here.
