EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-260.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Ratings and Specifications
Figures based on: Oil Temp = 40˚C Viscosity = 32 cSt (150 SUS)
Rated ow 180 L/min (47 USgpm)
Max working pressure 400 bar (5800 psi)
Cartridge material Working parts hardened and ground steel.
External surfaces zinc plated.
Mounting position Unrestricted
Cavity number A6726 (See Section M)
Torque cartridge into cavity 100 Nm (74 lbs ft)
Weight 0.59 kg (1.30 lbs)
Seal kit number SK830 (Nitrile)
SK830V (Viton
®
)
SK830P (Polyurethane/Nitrile)
Recommended filtration level BS5540/4 Class 18/13
(25 micron nominal)
Operating temperature
-30° to +90°C
(-22° to +194°F)
Leakage 0.3 milliliters/min max (5 dpm)
Nominal viscosity range 5 to 500 cSt
Bar per turn 5 bar
Viton® is a registered trademark of E.I. DuPont
1CPBD120 - Overcenter Valve
Zero differential with check
180 L/min (47 USgpm) • 400 bar (5800 psi)
Description
Zero differential overcenter
valves give static and dynamic
control of loads by supplying
a restriction to flow related
to the opening of the valve
created by the pilot pressure.
The valve is used in
conjunction with a remote
pilot source to provide hose
failure protection, load control
and load holding functions.
If over-pressure or shock
pressure protection is required
then a separate relief valve
should be used.
The drain line allows the
valve to be used in corrosive
atmospheres preventing
the ingress of atmospheric
contaminant.
Operation
The check section allows
free flow into the actuator
then holds and locks the load
against movement. By the
application of pilot pressure
to the pilot port the poppet
moves back against the main
spring opening the cylinder
port to the valve port. The
metering characteristic of the
valve is controlled by the rate
of the spring, the seat angle
and the pilot pressure applied.
Due to the balanced poppet
design load induced pressure
will not open the valve and
once open valve port pressure
will not increase the pilot
pressure required to keep the
valve open.
Features
The cartridge fits a simple
cavity allowing quick, easy
field service reducing down
time. Hardened poppet and
seat provide for long leak free
performance.
Performance Data
Sectional View
Pressure Drop
Flow - US gpm
Flow - L/min
Pressure - psi
Pressure - bar
580
435
290
145
0
40
30
20
10
0
0 30 90 150 210 270
0 8 24 40 56 72
Free flow
Pilot open
Pilot (3)
Valve (2)
Cyl (1)
Drain (4)
4
1
3
2
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-261.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Dimensions
mm (inch)
1CPBD120 - Overcenter Valve
Zero differential with check
180 L/min (47 USgpm) • 400 bar (5800 psi)
Model Code
1 Function
1CPBD120 - Cartridge only
Cartridge Only
Basic Code
1CPBD120
1CPBD120 F 2 P
1 2 3 4
2 Adjustment Means
F - Screw adjustment
3 Pilot Adjust Range
Note: Code based on pressure
in bar.
2 - 5-20 bar.
Std setting 10 bar
Std setting made at 4.8 L/min
4 Seals
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton (For high
temperature and most
special uid applications)
P - Polyurethane/Nitrile
(For arduous applications)
63.0
(2.48)
max
59.5
(2.34)
4.0 A/F
17.0 A/F
38.1 A/F
1-5/16-12UN-2A
Drain (4)
Valve (2)
Pilot (3)
Note: Tightening torque
of “F” adjuster locknut -
20 to 25 Nm.