Pvpc Plug For External Pilot Oil Supply; Pvpc With Check Valve For Open Center Pvp; Pvpc Without Check Valve For Open Center Pvp - Danfoss PVG 100 Service Manual

Service Manual
Operation

PVPC Plug for External Pilot Oil Supply

10
PVG 100 Proportional Valves

PVPC with Check Valve for Open Center PVP

PVPC, with check valve, is used in systems where it is necessary to operate the PVG 100 valve by means of
the electrical remote control without pump flow. When the external solenoid valve is opened, oil from
the pressure side of the cylinder is fed via the PVPC through the pressure reducing valve to act as the
pilot supply for the electrical actuators.
This means that a load can be lowered by means of the remote control lever without starting the pump.
The built-in check valve prevents the oil from flowing via the pressure adjustment spool to tank.
With the pump functioning normally, the external solenoid valve is closed to ensure that the load is not
lowered due to the pilot supply oil flow requirement of approximately
1 l/min [0.25 US gal/min].
P107 958E

PVPC without Check Valve for Open Center PVP

PVPC, without check valve, is used in systems where it is necessary to supply the PVG 100 valve with oil
from a manually operated emergency pump without directing oil flow to the pilot oil supply (oil
consumption about 1 l/min) [0.25 US gal/min].
When the main pump is working normally, the oil is directed through the PVPC plug through the
pressure reduction valve to the electrical actuators.
When the main pump flow fails, the external shuttle valve ensures that the oil flow from the manually
operated emergency pump is used to pilot open the over center valve and lower the load. The load can
only be lowered using the mechanical operating lever of the PVG 100 valve.
For specifications on PVG 100 valves, refer to PVG 100 Technical Information Manual 520L0344.
11048807 • Rev BA • October 2014
Check valve
P107 958E