Enerpac VM3 Fiche D'instructions page 5

4-WAY MANUAL VALVE DIAGRAMS
Manual Type Valves
Advance-Neutral/Hold-Retract
VC-4 Manual 4-Way
Directional Valve –
Manually operated remote
valve. Allows finger tip
control for powered advance
and retraction of cylinders with holding in
center position. Can be readily mounted
at any convenient point in the system.
VC-20 Manual 4-Way
Directional Valve –
Closed center version of above
– for multiple valve operation
VM-4 Manual 4-Way Directional
Valve –
Allows finger tip control for
powered advance and
retraction of a cylinder.
A B
"GA"
"GB"
"GP"
"GP"
T
P T
.375-18 NPTF
.250-18 NPTF
gauge port "GA"
A B
P T
TANDEM CENTER
A B
P T
CLOSED CENTER
A B
P T
TANDEM CENTER
VM43
.250-18 NPTF pump
pressure gauge port "GP"
.250-18 NPTF gauge
port "GB"
User adjustable
relief valve
.375-18 NPTF
advance port
retract port
.375-18 NPTF auxiliary tank
return "T"
Manual Locking Type Valves
Advance-Neutral/Hold-Retract
Remote Mounted
VC-4L Manual
Locking Valve –
Same as VC-4 but with
built-in locking feature.
VC-20L Manual 4-Way
Locking Valve –
Same as VC-20 but with
built-in locking feature.
Pump Mounted
VM-4L Manual 4-Way
Locking Valve –
Same as VM-4 but with
built-in locking feature.
Pump Mounted
.250-18 NPTF pump pressure
A
"GA"
"GP"
"GP"
P T
.375-18 NPTF
retract port
5 5
A B
4-Way
P T
TANDEM CENTER
A B
P T
CLOSED CENTER
Advance-Hold-Retract
A B
P T
TANDEM CENTER
VM43L
.250-18 NPTF pump
pressure gauge
gauge port "GP"
port "GP"
B
"GB"
.250-18 NPTF gauge
port "GB"
T
User adjustable relief valve
.375-18 NPTF advance port
.250-18 NPTF gauge port "GA"
.375-18 NPTF auxiliary tank return "T"