EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-500.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 electroless nickel plated.
Standard housing material Steel
Mounting position Line mounted
Weight 5.42 kg (11.94 lbs)
Seal kit SK688 (Nitrile)
SK688V (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
1CEESH350 - Dual Overcenter Valve
Pilot assisted relief with brake shuttle
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.
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
Performance Data
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
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
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.
C1
V1
C2
V2
B
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-501.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1CEESH350 - Dual Overcenter Valve
Pilot assisted relief with brake shuttle
300 L/min (80 USgpm) • 270 bar (4000 psi)
1 Basic Code
1CEESH350 - Cartridges and
Body
2 Adjustment Means
F - Screw adjustment
Model Code
4 Pressure Range @
4.8 L/min
Note: Code based on pressure
in bar.
35 - 70-350 bar.
Std setting 210 bar
Std setting made at 4.8 L/min
5 Seals
S - Nitrile (For use with
most industrial
hydraulic oils.
SV - Viton (For high
temperature and most
special uid applications
6 Pilot Ratio
3 - 3:1
8 - 8:1
7 Body Material
377 - Steel
3 Port Size
1CEESH350 F 10W 35 S 3 377
1 2 3 4 5 6 7
Code Port Size Housing Number - Body Only
Steel
10W 1 1/4" BSP Valve & Cyl Port 1/4" BSP Pilot Port CXP22297-10W-S-377
Complete Valve
1 1/4" Ports
Basic Code
1CEESH350
Internally Cross Piloted
Dimensions
mm (inch)
Note: Tightening torque of "F"
adjuster locknut - 20 to 25 Nm.
101.6
(4.00)
49.0
(1.93)
32.0
(1.26)
64.0 (2.52)
95.0 (3.74)
154.5
(6.08)
max
85.0
(3.35)
BR
V1 V2
97.0
(3.82)
57.0
(2.24)
C1 C2
8.5
(0.33)
88.5 (3.48)
80.0
(3.15)
11.0
(0.43)
V2
C2
2 holes
Ø11.0 (0.43) through
2 overcentre valves
1CE300-F-35-*-*
127.0 (5.00)
– –
