EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-440.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
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
Pressure Drop
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.
Ratings and Specifications
Figures based on: Oil Temp = 40°C Viscosity = 32 cSt (150 SUS)
Rated flow 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 steel surfaces zinc plated.
Mounting position Unrestricted
Cavity number A20094-T17A
Torque cartridge into cavity 150 Nm (110 lbs ft)
Weight 1.2 kg (2.5 lbs)
Seal kit number SK1116 (Nitrile) SK1116V (Viton
®
)
Recommended filtration level BS5540/4 Class 18/13 (25 micron nominal)
Operation 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
Performance Data
Sectional View
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.
Other options available upon
request.
1SE140 - Overcenter Valve
Pilot assisted relief with check
140 L/min (37 USgpm) • 340 bar (4930 psi)
Pilot (3)
Valve (2)
Cyl (1)
3
1
2
Flow - US gpm
Flow - L/min
Pressure - psi
Pressure - bar
725
580
435
290
145
0
50
40
30
20
10
0
0 40 80 120 160 200
0 10 20 30 40 50
Pilot open
Free ow
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-441.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Model Code
1SE**** F 40 S 4
1 2 3 4 5
1 Basic Code
1SE140
2 Adjustment Means
F - Screw Adjustment
N - Fixed - State pressure
setting required
For xed versions add setting in 10
bar increments to end of part number.
Subject to a ±10% tolerance.
3 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
4 Seals
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton (For high
temperature and most
special uid applications)
5 Pilot Ratio
4 - 4:1
6 - 6:1
Other ratios available upon request
Dimensions
mm (inch)
1SE140 - Overcenter Valve
Pilot assisted relief with check
140 L/min (37 USgpm) • 340 bar (4930 psi)
Cavity
Model A20094-T17A
Form Drill TD-17A
Form Reamer TR17A
Cartridge Only
Basic Code
1SE140
0.05 A
Thread and
all diameters
-A-
All seal lead-ins
to be smooth
and free of nicks
and sharp edges
0.00
0.00
Locating
shoulder
30º
45º
0.00
R0.80
1.6
(0.06)
1.6
(0.06)
1.6
(0.06)
2
1
3
R0.80
45º
45º
39.73 (1.564)
39.67 (1.562)
Ø
Ø44.45 (1.750)
36.58 (1.440)
36.53 (1.438)
Ø
37.29 (1.468)
37.34 (1.470)
Ø
23.00
(0.91)
min
depth
Ø14.27
(0.56)
Ø22.23
(0.88)
4.78
(0.19)
17.48
(0.69)
Min full
thread
22.23
(0.88)
36.53
(1.44)
46.34
(1.82)
46.22
(1.81)
56.74
(2.23)
M36 x 2.0-6H
Ø25.40 (1.00)
31.80 (1.252)
31.75 (1.250)
Ø
34.21 (1.346)
34.11 (1.343)
Ø
5.00 A/F
Ø53.00 (2.08)
A/C
Screw in to
increase pressure
Screw out to
release load
17.00 A/F
46.00 A/F
M36 x 2.0
Thread
(P) 3
(V) 2
(C) 1
Ø44.10
(1.74)
25.00
(0.98)
57.00
(2.24)
112.50
(4.43)
125.00
(4.92)
max
46.00
(1.81)
L.S.
1SE#140-F
To t sun
cavity T-17A
– –
Note: Tightening torque of "F"
adjuster locknut - 20 to 25 Nm.
