EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-360.A
An Eaton Brand
E
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 flow 50 L/min (12 USgpm)
Max pressure 250 bar (3500 psi)
Cartridge material Working parts hardened and ground steel.
External steel surfaces zinc plate.
Body material Standard aluminium (up to 210 bar*).
Add suffix “377" for steel option.
Mounting position Unrestricted
Cavity number C-10-2 (See Section M)
Torque cartridge into cavity 60 Nm (44 lbs ft)
Weight 1CLLR50 0.23 kg (0.5 lbs)
1CLLR55 0.8 kg (1.8 lbs))
Seal kit number SK1028 (Nitrile)
SK1028V (Viton
®
)
Recommended filtration level BS5540/4 Class 18/13 (25 micron nominal)
Operating temp -30° to +90°C (-22° to +194°F)
Leakage 5 milliliters/min
Nominal viscosity range 5 to 500 cSt
Viton is a registered trademark of E.I. DuPont
1CLLR50 - Dual Relief Valve
Poppet, direct acting, differential area
50 L/min (12 USgpm) • 250 bar (3500 psi)
Description
This is a direct acting
bi-directional relief valve
designed to protect both
lines in a circuit from over
pressurization by relieving oil to
the other line. Ideal for use with
motors or directional valves as
an emergency relief. Differential
area, fast acting, poppet valve.
Operation
Pressure acts over one of two
differential areas forcing the
poppet back allowing relief flow
to the other port.
This being a single cartridge is
ideal for mounting on to a motor
in a special housing.
Features
Single cartridge relieving in
both directions cutting down
space requirements, giving full
adjustment through its range
on both pressures at the same
time.
Pressure Drop Curves
Performance Data
Sectional View
1
2
Flow - US gpm
Flow - L/min
Pressure - psi
Pressure - bar
400
350
300
250
200
150
100
50
0
5800
5075
4350
3625
2900
2175
1450
725
0
0 2.5 5 7.5 10 12.5
0 10 20 30 40 50
2 (P)
1 (P)
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 E-361.A
An Eaton Brand
E
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
1CLLR50 - Dual Relief Valve
Poppet, direct acting, differential area
50 L/min (12 USgpm) • 250 bar (3500 psi)
1CLLR** F 3W 25 S
1 2 3 4 5
Dimensions
mm (inch)
Model Code
3 Port Sizes
1 Function
1CLLR50 - Cartridge Only
1CLLR55 - Cartridge and
Body
2 Adjustment Means
F - Screw Adjustment
4
Pressure Range
Note: Code based on pressure
in bar.
25 - 75-200 bar.
Std setting 120 bar
5 Seals
S - Nitrile (For use with most
industrial hydraulic oils)
SV - Viton® (For high
temperature and most
special fluid applications)
Cartridge Only
Basic Code
1CLLR50
Code Port Size Housing Number - Body Only
Aluminium Steel
Single Single
3W 3/8" BSP B19053 B20598
4W 1/2" BSP B19356 B20599
6T 3/8" BSP B19401 B20600
8T 1/2" SAE B19402 B20601
Complete Valve
3/8", 1/2" Ports
Basic Code
1CLLR55
Note: For applications above
210 bar please consult our
technical department or use
the steel body option.
67.4
(2.65)
33.00
(1.30)
5.00 A/F hex
22.20 A/F hex
25.20 A/F hex
7/8-14 UNF-2B
2 (P)
1 (P)
Screw in to increase pressure setting
Screw out to decrease pressure setting
50.80 (2.31)
7.10
(0.28)
3.15
(0.12)
19.10
(0.75)
41.30 (1.63)
38.10
(1.5)
1
2
18.50
(0.73)
16.00
(0.63)
31.80
(1.25)
67.4
(2.65)
50.80
(2.00)
– –
