EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-130.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 Tem = 40˚C Viscosity = 32 cSt (150 SUS)
Rated flow 30 L/min (8 USgpm)
Max relief pressure 300 bar (350 psi)
Max load induced pressure 270 bar (4000 psi)
Cartridge material Working parts hardened and ground steel.
External surfaces zinc plated.
Standard housing material Aluminum (up to 210 bar).
Add suffix “377” for steel option.
Mounting position Unrestricted
Cavity number A6610 (See Section M)
Torque cartridge into cavity 45 Nm (33 lbs ft)
Weight 1CEB30 0.14 kg (0.30 lbs)
1CEB35 0.40 kg (0.88 lbs)
1CEEB34 0.88 kg (1.94 lbs)
Seal kit number SK395 (Nitrile
SK395V (Viton
®
)
Recommended filtration level BS5540/4 Class 18/13 (25 micron nominal)
Operating temperature -30°C 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
1CEB30 - Overcenter Valve
Fully balanced, pilot assisted, relief with check
30 L/min (8 USgpm) • 270 bar (4000 psi)
Description
Overcenter valves give static
and dynamic control of loads
by supplying a counterbalance
pressure to the actuator. They
prevent runaway in the event
of hose burst and hold the load
with minimal leakage.
The pressure balanced valve is
unaffected by back pressure,
allowing service line reliefs
to operate and for the valve
to be used in regenerative or
proportional valve systems.
The overcenter valve should be
mounted either into, onto or as
close to the actuator as possible
to give maximum protection.
Single overcenter valves control
unidirectional loads such as
in aerial platforms, cranes or
winches and dual overcenters
are suited to bi-directional
motion such as wheel motor
applications or 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
5.1:1 (standard) Best suited for
applications where load varies
and machine structure can
induce instability.
Pressure Drop
Performance Data
Sectional View
Note:
This valve is not suitable
for high frequency applications
and aggressive environmental
conditions.
Pilot (3)
Valve (2)
Cyl (1)
Vent
3
1
2
Flow - US gpm
Flow - L/min
Pressure - psi
Pressure - bar
750
600
450
300
150
0
50
40
30
20
10
0
0 10 20 30 40 50
0 2.5 5 7.5 10 12.5
Free ow
Pilot open
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-131.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1CEB30 - Overcenter Valve
Fully balanced, pilot assisted, relief with check
30 L/min (8 USgpm) • 270 bar (4000 psi)
Model Code
3 Port Sizes
1CE*** F 3W 35 S 5
1 2 3 4 5 6
1 Function
1CEB30 - Cartridge Only
1CEB35 - Cartridge and Body
1CEEB34 - 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.
Cartridge Only
Basic Code
1CEB30
Dimensions
mm (inch)
Single Valve
3/8". 1/2" Ports
Basic Code
1CEB35
Dual Valve
3/8". 1/2" Ports
Basic Code
1CEEB34
Internally Cross Piloted
5 Seals
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton (For high tempera-
ture and most special
fluid applications)
6 Pilot Ratio
5 - 5:1
4 Pressure Range
@ 4.8 L/min
Note: Code based on pressure
in bar.
35 - 100-350 bar.
Std setting 210 bar
Std setting made at 4.8 L/min
Code Port Size Housing Number - Body Only
Aluminium Steel Aluminium Steel
Single Single Dual Dual
3W 3/8" BSP Valve & Cyl Port 1/4" BSP Pilot Port B6743 B12823 B6836 B13803
6T 3/8" SAE Valve & Cyl Port 1/4” SAE Pilot Port B10536 B10805
8T 1/2" SAE Valve & Cyl Port 1/4” SAE Pilot Port B7884 B11811 B30237 B11812
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
Hex socket
adjust 4.0 A/F
25.4 A/F
Vent
M20 x 1.5-6g
Pilot (3)
Valve (2)
Cyl 1)
42.6
(1.67)
47.0
(1.85)
max
28.0 (1.10)
max for
xed adjust
60.0
(2.36)
2 holes Ø9.0
(0.35) thro’
26.5
(1.04)
16.0
(0.63)
31.8
(1.25)
11.5
(0.45)
88.0
(3.46)
max
for xed
‘N’ adjust
107.0
(4.21)
max
9.0
(0.35)
32.0
(1.26)
63.5 (2.50)
3
2
1
42.0
(1.65)
9.0
(0.35)
63.5
(2.50)
2 holes Ø9.0 (0.35) thro’
26.5
(1.04)
16.0
(0.63)
31.8
(1.25)
31.7
(1.25)
70.0 (2.76)
111.0
(4.37)
max
57.0
(2.24)
82.0 (3.23)
101.6 (4.00)
9.8
(0.39)
V1
C2
C1
V2
– –
C1
V1
C2
V2
