EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-470.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1CEESH35 - Dual Overcenter Valve
Pilot assisted relief with brake shuffle
30 L/min (8 USgpm) • 270 bar (4000 psi)
Ratings and Specifications
Figures based on: Oil Temp = 40˚C Viscosity = 32 cSt (150 SUS)
Rated flow 30 L/min (8 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 electroless nickel plated.
Standard housing material Steel
Mounting position Line Mounted
Weight 2.20 kg (4.84 lbs)
Seal kit SK816 (Nitrile)
SK816V (Viton
®
)
Filtration
BS5540/4 Class 18/13 (25 micron nominal)
Temperature range -30° to +90°C (-22° to +194°F)
Internal leakage 0.3 milliliters/min nominal (5 dpm)
Nominal viscosity range 5 to 500 cSt
Viton is a registered trademark of E.I. DuPont
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
centre directional control
valves are used, will allow
thermal expansion relief of the
hydraulic fluid.
These dual overcenter valves
also contain a brake release
shuttle valve which ensures
that pressure is applied to a
brake release circuit regardless
of whether pressure is
applied to ports V1 or V2.
These multifunction valves
are normally used for the
static and dynamic control of
systems using motors or semi-
rotary actuators.
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
Performance Data
Pressure Drop
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
These valves have the
excellent load control and
safety features of the dual
overcenter valve with the
addition of a port for a brake
release line. Smooth, safe
performance.
Pilot Ratio
2.5:1 Best suited for extremely
unstable applications such
as long booms or flexible
frameworks.
5.1 (standard) Best suited for
applications where load varies
and machine structure can
induce instability.
10:1 Best suited for applications
where the load remains
relatively constant.
C1
V1
C2
V2
B
0 10 20 30 40 50
Flow - L/min
Pressure - psi
Pressure - bar
Flow - US gpm
0 2.5 5 7.5 10 12.5
50
40
30
20
10
0
750
600
450
300
150
0
Free ow
Pilot
open
Flow - L/min
Pressure - psi
Pressure - bar
Flow - US gpm
0 10 20 30 40
0 2.5 5 7.5 10
50
40
30
20
10
0
750
600
450
300
150
0
Free ow
Pilot
open
2.5:1 and 5:1 version 10:1 version
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-471.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1CEESH35 - Dual Overcenter Valve
Pilot assisted relief with brake shuffle
30 L/min (8 USgpm) • 270 bar (4000 psi)
1 Basic Code
1CEESH35 - Cartridge and
Body
2 Adjustment
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.
Model Code
4 Pressure Range
@ 4.8 L/min
Note: Code based on pressure
in bar.
35 - (2.5:1 and 5:1) 100-350 bar.
Std setting 210 bar
(10:1) 120-350 bar.
Std setting made at 4.8 L/min
5 Seal Material
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton (For high
temperature and most
special uid applications)
6 Pilot Ratio
2 - 2.5:1
5 - 5:1 (Standard)
10 - 10:1
7 Body Material
377 - Steel
3 Port Size
1CEESH35 F 3W 35 S 3 377
1 2 3 4 5 6 7
Code Port Size Housing Number - Sub Assembly
Steel Single
3W 3/4" BSP Valve & Cyl Port 1/4" BSP Brake Port BXP15939-3W-S-377
Dimensions
mm (inch)
Complete Valve
3/8" Ports
Basic Code
1CEECSH35
Internally Cross Piloted
Note: Tightening torque
of “F” adjuster locknut -
20 to 25 Nm
V1
47.0
(1.85)
max
63.5
(2.5)
26.5
(1.04)
15.0
(0.59)
50.8 (2.00)
51.0 (2.00)
53.5
(2.11)
41.5
(1.63)
9.0
(0.35)
82.0 (3.23)
B
31.5
(1.24)
70.0 (2.76)
101.6 (4.00)
35.8
(1.41)
C1 C2
15.0
(0.59)
26.5
(1.04)
V2
2 holes
Ø9.0 (0.35) through
2 overcentre valves
1CE30-F-35S*
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