EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-290.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 ow 140 L/min (37 USgpm)
Max relief setting 420 bar (6090 psi)
Max load induced pressure 340 bar (4930 psi)
Cartridge material Working parts hardened and ground steel.
External surfaces zinc plated.
Standard housing material Aluminum (up to 210 bar).
Add sux “377” for steel option.
Mounting position Unrestricted
Cavity number A20081
Torque cartridge into cavity 150 Nm (110 lbs ft)
Weight 1CER140 1.2 kg (2.6 lbs)
1CER145 (aluminium) 2.2 kg (4.8 lbs)
1CER145 (steel) 4.0 kg (8.8 lbs)
1CEER145 (aluminium) 2.9 kg (6.4 lbs)
1CEER145 (steel) 6.0 kg (13.2 lbs)
Seal kit number SK1108 (Nitrile)
SK1108V (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
1CER140 - Overcenter Valve
Part balanced, pilot assisted relief with check
-NJO64HQNtCBSQTJ
Description
The 1CER series overcenter
valve performs all duties of
a regular overcenter but is
able to relieve and stay open
irrespective of downstream
pressure. This enables the
valve to operate when
used with a closed center
directional valve which has
service line reliefs. The
poppet is pressure balanced,
preventing relief setting
increase due to back pressure.
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.
6:1 Best suited for applications
where the load remains
relatively constant.
Performance Data
Sectional View
Pressure Drop
Pilot (3)
Valve (2)
Cyl (1)
Flow - US gpm
Flow - L/min
Pressure - psi
Pressure - bar
725
580
435
290
145
0
Free ow
Pilot open
50
40
30
20
10
0
0 10 20 30 40 50
0 40 80 120 160 200
3
1
2
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-291.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Dimensions
mm (inch)
1CER140 - Overcenter Valve
Part balanced, pilot assisted relief with check
-NJO64HQNtCBSQTJ
Model Code
1 Function
1CER140 - Cartridge Only
1CER145 - Cartridge and
Body
1CEER145 - Cartridges and
Body
2 Adjustment Means
F - Screw Adjustment
1CER*** F 6W 40 S 4
Cartridge Only
Basic Code
1CER140
1 2 3 4 5 6
3 Port Sizes
4 Pressure Range
@ 4.8 l/min
Note: Code based on pressure
in bar.
20 - 140-250 bar.
Std setting 190 bar
30 - 220-330 bar.
Std setting 270 bar
40 - 310-420 bar.
Std setting 370 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
4 - 4:1
6 - 6:1
Other ratios available upon request
Code Port Size Housing Number - Body Only
Aluminium Steel Aluminium Steel
Single Single Dual Dual
6W 3/4” BSP Valve & Cyl Port. 1/4” BSP Pilot Port B20105 B20106
8W 1” BSP Valve & Cyl Port. 1/4” BSP Pilot Port B20107 B20108 C20285 C20287
12T 3/4” SAE Valve & Cyl Port. 1/4” SAE Pilot Port B11952 B11953
16T 1” SAE Valve & Cyl Port. 1/4” SAE Pilot Port B11946 B11947 C30105 C30106
Single Valve
3/4" , 1" Ports
Basic Code
1CER145
Dual Valve
1" Ports
Basic code 1CEER145
Internally Cross Piloted
Note: For applications above
210 bar - please consult our
technical department or use
the steel body option
Cyl (1)
M38 x 2.0
Pilot (3)
Valve (2)
46.00 A/F
38.00 A/F
17.00 A/F
97.50
(3.84)
max
72.40
(2.85)
max
5.00 A/F
101.6
(4.0)
2 mounting
holes Ø11.0
(0.43) thro’
31.8
(1.25)
198.60
(7.82)
max
12.6
(0.5)
22.0
(0.87)
77.5
(3.05)
90.0 (3.54)
70.0
(2.76)
CRS
3
2
1
63.5
(2.5)
101.6
(4.0)
31.8
(1.25)
63.5
(2.50)
198.6
(7.82)
max
46.0
(1.81)
45.0
(1.77)
107.0 (4.21)
127.0 (5.0) CRS
152.0 (5.98)
82.6
(3.25)
46.0
(1.81)
2 mounting
holes Ø11,0
(0.43) through
V1
V2
C1
C2
– –
Note: Tightening torque
of “F” adjuster locknut -
20 to 25 Nm.
C1
V1
C2
V2
