EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-170.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 90 L/min (23 USgpm)
Max relief setting 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 materials Aluminum (up to 210 bar).
Add suffix “377” for steel option.
Mounting position Unrestricted
Cavity number A12336 (See Section M)
Torque cartridge into cavity 60 Nm (44 lbs ft)
Weight 1CE90 0.29 kg (0.63 lbs)
1CE95 1.35 kg (2.97 lbs)
1CEE95 2.10 kg (4.62 lbs)
Seal kit number SK633 (Nitrile)
SK633V (Viton
®
)
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 nominal (5 dpm)
Nominal viscosity range 5 to 500 cSt
Viton is a registered trademark of E.I. DuPont
1CE90 - Overcenter Valve
Pilot assisted relief with check
90 L/min (23 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
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
4:1 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.
Pressure Drop
Performance Data
Sectional View
4:1 Version 8:1 Version
Pilot (3)
Valve (2)
Cyl (1)
Flow - L/min
Pressure - psi
Pressure - bar
Flow - US gpm
0 25 50 75 100
0 6.5 13 19.5 26
600
500
400
300
200
100
0
42
35
28
21
14
7
0
Free ow
Piloted open
3
1
2
Flow - L/min
Pressure - psi
Pressure - bar
Flow - US gpm
0 25 50 75 100
0 6.5 13 19.5 26
240
210
180
150
120
90
60
30
0
16
14
12
10
8
6
4
2
0
Free ow
Piloted open
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-171.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
36.0
(1.42)
70.0
(2.76)
19.0
(0.75)
38.1
(1.50)
10.0
(0.39)
38.1
(1.50)
58.0
(2.28)
56.0 (2.20)
76.2 (3.0)
18.0
(0.71)
132.0
(5.2)
max
38.1
(1.50)
2 holes
Ø11.0 (0.43)
thro’
2
3
1
Dimensions
mm (inch)
1CE90 - Overcenter Valve
Pilot assisted relief with check
90 L/min (23 USgpm) • 270 bar (4000 psi)
Model Code
3 Port Sizes
1CE*** F 4W 35 S 4
1 2 3 4 5 6
1 Function
1CE90 - Cartridge Only
1CE95 - Cartridge and Body
1CEE95 - Cartridges and
Dual Body
2 Adjustment Means
F - Screw Adjustment
N - Fixed - State pressure
setting required.
For fixed versions add setting in 10
bar increments to end of part number.
Subject to a ±10% tolerance.
5 Seals
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton (For high
temperature and most
special fluid applications)
6 Pilot Ratio
4 - 4:1
8 - 8:1
Other ratios available upon
request
4 Pressure Range
@ 4.8 I/min
Note: Code based on pressure
in bar.
20 - 70-225 bar.
Std setting 100 bar
35 - 200-350 bar.
Std setting 210 bar
Std setting made at 4.8 L/min
Cartridge Only
Basic Code
1CE90
Dual Valve
1/2" Ports
Basic Code 1CEE95
Internally Cross Piloted
Code Port Size Housing Number - Body Only
Aluminum Steel Aluminum Steel
Body Only Single Single Dual Dual
4W 1/2" BSP Valve & Cyl Port 1/4" BSP Pilot Port B13625 B13626 C13627 C13628
8T 1/2" SAE Valve & Cyl Port 1/4” SAE Pilot Port B10806 B10922 C10807 C11561
Note: Tightening torque
of “F” adjuster locknut -
20 to 25 Nm
Note: For applications above
210 bar - please consult our
technical department or use
the steel body option
62.0
(2.44)
max
54.0
(2.13)
Hex socket adjust
5.0 A/F
17.0 A/F
32.0 A/F
M27 x 1.5-6g
Pilot (3)
Valve (2)
Cyl (1)
76.2
(3.0)
36.0
(1.42)
19.0
(0.75)
38.1
(1.50)
58.0
(2.28)
40.5
(1.59)
86.5 (3.41)
139.0
(5.47)
max
107.0 (4.21)
127.0 (5.0)
2 holes Ø11.0 (0.43) thro’
V1
V2
C1
C2
10.0
(0.39)
Single Valve
1/2" Ports
Basic Code
1CE95
– –
C1
V1
C2
V2
