EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-310.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 flow 300 L/min (80 USgpm)
Max relief pressure 350 bar (5000 psi)
Max load induced pressure 270 bar (4000 psi)
Cartridge material Working parts hardened and ground steel.
External surfaces zinc plated.
Standard housing material Alumiium (up to 210 bar).
Add suffix “377” for steel option.
Mounting position Unrestricted
Cavity A6935 (See Section M)
Torque cartridge into cavity 150 Nm (110 lbs ft)
Weight cartridge only 1CE300 0.91 kg ( 2.00 lbs)
1CE350 2.71 kg ( 5.96 lbs)
1CEE350 5.42 kg (11.92 lbs)
Seal kit SK437 (Nitrile)
SK437V (Viton
®
)
Filtration
BS5540/4 Class 18/13 (25 micron nominal)
Temperature range -30°C to +90°C (-22° to +194°F)
Internal leakage 4 milliliters/min nominal (60 dpm)
Nominal viscosity range 5 to 500 cSt
Viton is a registered trademark of E.I. DuPont
1CE300 - Overcenter Valve
Pilot assisted relief with check
300 L/min (80 USgpm) • 270 bar (4000 psi)
Description
Overcenter valves give
static and dynamic control
of loads by regulating the
flow into and out of hydraulic
actuators. When installed
close to or within an actuator,
the overcenter valve will
stop runaway in the event
of hose burst and if open
center directional control
valves are used, will allow
thermal expansion relief of the
hydraulic fluid.
The overcenter cartridge is
ideal for mounting directly
into a cavity machined in the
body of the cylinder, motor or
rotary actuator. The cartridge
can also be mounted directly
to the ports via a specifically
machined body as part of a
Hydraulic Integrated Circuit
or single unit, or contained
within one of our standard line
bodies.
Single overcenter valves are
normally used when the load
is unidirectional, for example
an aerial platform or crane
and dual overcenter valves
are used for controlling loads
in both directional for motor
applications or for cylinders
going over center.
Operation
The check section allows
free flow into the actuator
then holds and locks the load
against movement. The pilot
assisted relief valve section
will give controlled movement
when pilot pressure is applied.
The relief section is normally
set to open at a pressure at
least 1.3 times the maximum
load induced pressure but the
pressure required to open the
Performance Data
Sectional View
Pressure Drop
valve and allow movement
depends on the pilot ratio of
the valve. For optimization
of load control and energy
usage, a choice of pilot ratios
is available.
The pressure required to open
the valve and start actuator
movement can be calculated
as follows:
Pilot Pressure =
(Relief Setting) - (Load Pressure)
Pilot Ratio
Features
Cartridge is economical and
fits simple cavity. Allows quick,
easy field service - reduces
down time. Interchangeable
with pilot check valve of a
similar size.
Pilot Ratio
3:1 Best suited for applications
where load varies and machine
structure can induce instability.
8:1 Best suited for applications
where the load remains
relatively constant.
Pilot (3)
Valve (2)
Cyl (1)
3
1
2
Flow - US gpm
Flow - L/min
Pressure - psi
Pressure - bar
24
21
18
15
12
9
6
3
0
352
308
264
220
176
132
88
44
0
Free ow
Pilot open
0 50 100 150 200 250 300 350 400
0 25 50 75 100
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-311.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
53.0
(2.09)
max
75.5
(2.97)
Hex socket adjust
5.0 A/F
17.0 A/F
46.0 A/F
1.5/8-12 UN-2A
Pilot (3)
Valve (2)
Cyl (1)
23.5
(0.93)
101.6
(4.0)
63.5 (2.5)
31.8
(1.25)
10.5
(0.41)
80.0
(3.15)
154.5
(6.08)
max
97.0 (3.82)
80.0 (3.15)
8.5
(0.33)
49.0
(1.93)
2 holes
Ø10.5
(0.41)
thro’
1
2
3
Dimensions
mm (inch)
1CE300 - Overcenter Valve
Pilot assisted relief with check
300 L/min (80 USgpm) • 270 bar (4000 psi)
1 Function
1CE300 - Cartridge only
1CE350
- Cartridge and
Body
1CEE350 - Cartridges and Body
2 Adjustment
F - Screw adjustment
Model Code
4 Pressure Range
Note: Code based on pressure
in bar.
35 - 70-350 bar.
Std setting 210 bar
Std setting made at 4.8 L/min
5 Seal Material
S - Buna-N
SV - Viton
Pilot Ratio
3 - 3:1 - (Standard)
8 - 8:1
3 Port Size
1CE**** F 10W 35 S 3
1 2 3 4 5 6
Code Port Size Housing Number - Body Only
Aluminium Steel Aluminium Steel
Single Single Dual Dual
10W 1 1/4" BSP Valve & Cyl Port 1/4" BSP Pilot Port B6814 B8610 C8704 C8705
20T 1 1/4" SAE Valve & Cyl Port 1/4" SAE Pilot Port B10630 B11474 C10811 C11564
Cartridge Only
Basic Code
1CE300
Single Valve
1 1/4" Ports
Basic Code
1CE350
Dual Valve
1 1/4" Ports
Basic code 1CEE350
Internally Cross Piloted
Note: For applications above
210 bar - please consult our
technical department or use
the steel body option.
80.0 (3.15)
8.5 (0.33)
2 holes Ø11.0
(0.43) thro’
11.0
(0.43)
154.5
(6.08)
max
80.0
(3.15)
101.6
(4.0)
57.0 (2.24)
97.0 (3.82)
49.0
(1.93)
32.0
(1.26)
95.0 (3.74)
127.0 (5.0)
V1
V2
C1
C2
– –
Note: Tightening torque
of “F” adjuster locknut -
20 to 25 Nm.
C1
V1
C2
V2
