The filter must be fitted with pressure gauge or dirt indicator to make it possible to check the condition of
the filter.
In systems with differential cylinders or accumulators the return filter must be sized to suit the max.
return oil flow. Pressure filters must be fitted to suit max. pump oil flow.
Internal filters
The filters built into PVG 120 are not intended to filter the system but to protect important components
against large particles.
Such particles can appear in the system as a result of pump damage, hose fracture, use of quick-
couplings, filter damage, starting up, contamination, etc.
The filter that protects the pilot supply in the tank side module has a mesh of 125 µm. It is obtainable as a
spare part and is easy to replace.
The filter protecting the essential PVE parts has a mesh of 125 µm.
Conversion Factors
1 N•m = 885.1 lbf•in
1 N = 22.48 lbf
1 bar = 14.50 psi
1 mm = 0.0394 in
1 cm
3
= 0.061 in
3
1 l = 0.22 UK gal
1 l = 0.264 US gal
°F = 1.8 • °C + 32
Technical Information
PVG 120 Proportional Valve Group
Other operating conditions
30
520L0356 • Rev JA • Mar 2014