EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-650.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Description
These overcenter valves
are suitable for use on the
boom and dipper cylinders
of an excavator to help the
manufacturer or user comply
with standard ISO8643.
They were designed to give
relief, load holding and hose
failure protection to systems
where a pilot system controls
the directional valves.
Operation
By connecting the hose
rupture valve pilot in parallel
with the directional spool
valve pilot, and adjusting the
opening characteristics of the
hose rupture valve to suit that
of the spool valve “BoomLoc”
may be set so as not to
interfere with the normal
operation of the machine.
Fine adjustment of the pilot
pressure permits the optimum
setting to be made in differing
operating systems.
Both the pilot and the relief
sections are unaffected by
backpressure, enabling the
service line relief’s to operate
normally. In the event of hose
failure, the control will be
passed from the main spool
to the “BoomLoc” valve,
maintaining control of the
cylinder.
Regardless of the load the
pilot pressure requirement
remains constant as the
valve is unaffected by load
induced pressure, the poppet
being fully balanced with zero
differential area.
Features
This is a compact design
with good dirt tolerance.
Hardened poppets and seats
provide excellent load holding
characteristics with all the
advantages of the cartridge
insert.
Ratings and Specifications
Figures based on: Oil Temp = 40˚C Viscosity = 32 cSt (150 SUS)
Rated flow 30 L/min (8 USgpm)
Max setting 350 bar (5000 psi)
Cartridge material Working parts hardened and ground steel.
External surfaces electroless nickel plated and passivated.
Standard housing materials Bright drawn M.S. bar zinc plated and passivated
Mounting position Line mounted
Weight 2 kg (4.4 lbs)
Seal kit SK1164P (Polyurethane/Nitrile)
Filtration BS5540/4 Class 18/13 (25 micron nominal)
Temperature range -30° to 90°C (-22° to +194°F)
Internal leakage 0.6 ml/min (10 dpm)
Nominal viscosity range 5 to 500 cSt
Performance Data
1CEBL31 - BoomLoc Valve
Hose burst protection, line mounted with independent pilot control (Ref. ISO 8643)
30 L/min (8 USgpm) • 350 bar (5000 psi)
Typical Circuit
Gauge
Cyl
Pilot 2
V
CT1 CT2
Pilot 1
Servo
pilot
inlet
Pilot
Load
Gauge
Cyl
Pilot 2
V
CT1 CT2
Pilot 1
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-651.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Model Code
1 2
3
4 5
1CEBL31 F 4W 35 P
Dimensions
mm (inch)
1
Basic Code
1CEBL31 - Cartridges and
body
2
Adjustment Means
F - Screw adjustment
For fixed versions add setting in 10
bar increments to end of part number.
Subject to a ±10% tolerance.
5
Seals
P - Contains polyurethane
and standard seal.
3
Port Size
4W - 1/2" BSP cylinder port
1/2" BSP valve port
1/4" BSP all other ports
4
Pressure Range
@ 4.8 L/min
Note: Code based on pressure
in bar.
35 - 70-350 bar.
Std setting 280 bar
Std setting made at 4.8 L/min
1CEBL31 - BoomLoc Valve
Hose burst protection, line mounted with independent pilot control (Ref. ISO 8643)
30 L/min (8 USgpm) • 350 bar (5000 psi)
– –
Complete Valve
Line Mounted
Basic Code
1CEBL31
Note: Tightening torque of "F"
adjuster locknut - 20 to 25 Nm.
1CPB30-F2P
Torque to 45Nm
Set at 123psi (8.5 bar)
1PSC30-F-35P-A5B
Torque to 45Nm
Set at 4060psi (280bar)
Plugged torque
to 33 Nm
52 (2.04)
approx
Unplugged
130.00 (5.12)
Gauge
26.00
(1.02)
47.0 (1.85)
approx
13.00
(0.51)
61.25
(2.41)
CT2
Cyl
19.50
(0.77)
Torque to 15.8 Nm
Pilot
9.0
(0.35)
Two mounting holes
Ø8.5 (0.33)
99.00
(3.90)
51.0 0
(2.00)
22.00
(0.87)
9.0
(0.35)
46.50
(1.83)
CT1
V
19.50
(0.77)
38.10
(1.5)
76.20
(3.00)
61.25
(2.41)
