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3. Overview, functional description
Fig. 8 VPB progressive metering device series
3.6 Overview of VPB progressive metering device series
1 2 3
4 5
The VPB block metering device, which be-
longs to the progressive metering device
range, is available in the designs VPBM
(metric threaded connectors) and VPBG
(inch threaded connectors).
VPBM and VPBG block metering devices are
set to a non-adjustable nominal volume per
outlet and cycle of 0.20 cm
3
. The volumetric
flow fed via a tube is forcibly distributed in a
predetermined ratio to the outlets, i.e. to the
lubrication points or downstream progres-
sive 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 block metering device can be checked by
monitoring any piston by means of a cycle
indicator or piston detector.
Attachable check valves offer high functional
reliability (at high or differing back pres-
sures such as in grease systems). They also
provide accurate metering and safe blocking
behavior, even for internal and external con-
solidation of lubricant outlets.
Legend
1
VPB basic design for oil and grease, without attachments, without monitoring
2
VPB basic design with cycle indicator for oil or grease, monitoring type ZY
(visual monitoring)
3
VPB with inductive NAMUR sensor for oil or grease, monitoring type ZS
(electric monitoring)
4
VPB with 2/2 directional solenoid valve for oil and grease, attachment 13
5
VPB with 3/2 directional solenoid valve for oil and grease, attachment 14
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