EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-600.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
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
back pressure, 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.
1CEBL256 - BoomLoc Valve
Hose burst protection, flange mounted with independent pilot control (Ref. ISO 8643)
250 L/min (66 USgpm) • 350 bar (5000 psi)
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.
Ratings and Specifications
Figures based on: Oil Temp = 40˚C Viscosity = 32 cSt (150 SUS)
Rated flow 250 L/min (66 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 mild steel bar.
Zinc plated and passivated.
Mounting position Flange mounted
Weight 7.5 kg (16.5 lbs)
Seal kit SK1162P (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
Typical Circuit
V
Drain
E
C
E
Pilot
Bleed
V
CT4 CT3
CT2
CT1
V
Dr
E
C
E
Pil
Bleed
V
CT4 CT3
CT2CT1
Servo
pilot
inlet
Pil
LoadLoad
V
E
C
E
Bleed
V
CT4 CT3
CT2CT1
Dr
Pil
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-601.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
Dimensions
mm (inch)
1CEBL256 - BoomLoc Valve
Hose burst protection, flange mounted with independent pilot control (Ref. ISO 8643)
250 L/min (66 USgpm) • 350 bar (5000 psi)
Model Code
1
Basic Code
1CEBL256 - Cartridges and
body
2
Adjustment Means
F - Screw adjustment
For xed versions add setting in 10
bar increments to end of part number.
Subject to a ±10% tolerance.
1 2 3 4 5 6
1CEBL256 F 3/4 6 35 P
4
SAE Port Type
6 - SAE 6000 (Valve port)
5
Pressure Range
@ 4.8 L/min
Note: Code based on pressure
in bar.
35 - 70-350 bar.
Std setting 350 bar
Std setting made at 4.8 L/min
6
Seals
P - Contains polyurethane
and standard seal.
Flange Mounted
Basic Code
1CEBL256
3
Port Size
3/4 - 3/4" SAE flange cylinder port slotted for 3000 & 6000)
3/4" SAE Flange valve port (thread G1/2)
1/8" BSP bleed port
1/4" BSP all other ports
Note: Cylinder port bolt holes
are slotted for tment to both
SAE 3000 & SAE 6000
mounting faces.
Note: Tightening torque of "F"
adjuster locknut - 20 to 25 Nm.
19.00 (0.75)
36.00 (1.42)
38.00 (1.50)
E CT3
11.90 (0.47)
CRS
11.90 (0.47)
CRS
4 mtg holes
M10 x 1.5
(0.06) x 20
(0.79) deep
V
25.40 (1.00) CRS
25.40 (1.00) CRS
47.50
(1.87)
95.00
(3.74)
96.00
(3.78)
128.00
(5.04)
Torque
7.1 Nm
13.10
(0.52)
CRS
13.88
(0.55)
CRS
13.88
(0.55)
CRS
13.10
(0.52)
CRS
1.6
(0.62)
86.50 (3.41)
43.25 (1.70)
28.58 (1.13) CRS28.58 (1.13) CRS
26.19 (1.03) CRS26.19 (1.03) CRS
C
4 mtg holes through
1.6
(0.62)
18.00
(0.71)
11.00 (0.43)
4 mtg holes
M10 x 1.5 (0.06)
x 20 (0.79)
deep
38.00 (1.50)
36.00 (1.42)
19.00 (0.75)
1.6 (0.62)
11.90
(0.47)
CRS
11.90
(0.47)
CRS
148.00
(5.83)
95.00
(3.74)
47.50
(1.87)
Torque
15.8 Nm
Torque
90 Nm
CT4 E
V
25.40 (1.00)
CRS
25.40 (1.00)
CRS
Bleed
23.00
(0.90)
87.50
(3.44)
11.00 (0.43)
75.50
(2.97)
Pilot
CT2
CT1
Drain
26.00
(1.02)
1PSC30-F-35P Torque to 45 Nm
Set at 5075 psi (350 bar)
1CPBD120-F2P Torque to 100 Nm
Set at 145 psi (10 bar)
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