EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-660.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1CEBL91 - BoomLoc Valve
Hose burst protection, line mounted with independent pilot control (Ref. ISO 8643)
90 L/min (24 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.
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 90 L/min (24 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 3.5 kg (7.7 lbs)
Seal kit SK1166P (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
GP
Pilot
V1
CT2 CT1
Cyl
V
GP
Pilot
V1
CT2 CT1
Cyl
V
Servo
pilot
inlet
Pilot
Load
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 F-661.A
An Eaton Brand
F
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1CEBL91 - BoomLoc Valve
Hose burst protection, line mounted with independent pilot control (Ref. ISO 8643)
90 L/min (24 USgpm) • 350 bar (5000 psi)
Model Code
1
Basic Code
1CEBL91 - 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
1CEBL91
F
4W
35
P
Dimensions
mm (inch)
3
Port Size
4W - 1/2" BSP cylinder port
1/2" BSP valve port "V"
1/4" BSP "V1" & 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
5
Seals
P - Contains polyurethane
and standard seal.
– –
Complete Valve
Line Mounted
Basic Code
1CEBL91
Note: Tightening torque of "F"
adjuster locknut - 20 to 25 Nm.
58.50
(2.30)
16.00
(0.63)
50.80
(2.00)
C
CT1
65.00 (2.56)
approx
115.00 (4.53)
47.00 (1.85) approx
76.50
(3.01)
CT2
PIL
V
V1
GPC
36.00
(1.42)
58.50
(2.30)
40.00
(1.57)
16.00
(0.63)
1PSC30-F-35P-A5B
Torque to 45Nm
Set at 280 Bar (4060 psi)
1 mounting
hole 8.50
(0.33) thro’
36.00
(1.42)
63.00 (2.48)
16.00
(0.63)
29.00
(1.14)
46.00
(1.81)
76.20
(3.00)
1CPB90-F2P
Torque to 60Nm
Set at 8.0 Bar (116 psi)
