Catalog HY15-3501/US
LM11
Load Control Valve
Series E2A020, E2B020
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Solenoid
Valves
Proportional
Valves
Coils &
Electronics
Bodies &
Cavities
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
General Description
Threaded Cartridge Style Counterbalance Valve.
Pilot assisted, designed for motion control
applications. For additional information see
Technical Tips on pages LM1-LM4.
Features
•
Poppet construction for minimal leakage
•
Incorporates direct acting relief valve for overload
protection
•
Includes reverse check valve within body, saving space
and minimizing installation cost
•
Can be directly mounted into cylinder eliminating
requirement for manifold block
•
Fully sealed pilot for high efficiency and accurate pilot
ratio
•
Two pilot ratios available, 4.5:1 for cylinders and 8:1 for
motor control
•
Adjustable and tamper resistant versions available
•
Preset version is tamper resistant and compact
•
All external parts zinc plated
Specifications
Technical Information
Performance Curves
Rated Flow E2A020 14 LPM (3.7 GPM)
E2B020 20 LPM (5.3 GPM)
Pressure 50 - 420 Bar (725 - 6000 PSI)
Sensitivity: E2A020 113 Bar (1640 PSI)
Pressure/Turn E2B020 84 Bar (1220 PSI)
Pilot Ratio E2A020 - 8 : 1
E2B020 - 4.5 : 1
Cartridge Material All parts steel. All operating
parts hardened steel.
Operating Temp. -40°C to +93.3°C (Nitrile)
Range/Seals (-40°F to +200°F)
-31.7°C to +121.1°C (Fluorocarbon)
(-25°F to +250°F)
Fluid Mineral-based or synthetic with
Compatibility/ lubricating properties at viscosities
Viscosity of 45 to 2000 SSU (6 to 420 cSt)
Filtration ISO Code 16/13,
SAE Class 4 or better
Approx. Weight 0.08 kg (0.17 lbs.)
Cavity 53-1
(See BC Section for more details)
(1)
(2)
(3)
(2)
(3)
(1)
Flow (Q)
14
3.7
10
2.6
5
1.3
LPM
GPM
0
15
4.0
20
5.3
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
1450
400
200
300
100
5800
PSI Bar
2900
4350
Pressure Drop Bar, PSI
Relief & Pilot Performance 1 to 2
RELIEF
E2B020
PILOT PRESSURE WITH
100 BAR LOAD
E2A020
Pressure Drop vs Flow
Flow (Q)
10
2.6
5
1.3
LPM
GPM
0
15
4.0
20
5.3
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
73
20
10
15
5
290
PSI Bar
145
218
PressurDrop Bar, PSI
E2B020
PILOTED OPEN
1 to 2
FREE FLOW
2 to 1
E2A020
Load Control Valve
Series E2A020, E2B020
Catalog HY15-3501/US
LM12
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Proportional
Valves
Coils &
Electronics
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Bodies &
Cavities
Solenoid
Valves
Technical Information
Dimensions
Millimeters (Inches)
Ordering Information
Adjustment
Style
Cracking
Pressure
Seals
Code Seals / Kit No.
N Nitrile, Buna-N (Std.) /
(SK30087N-1)
V Fluorocarbon /
(SK30087V-1)
Code Pilot Ratio
A 8 : 1
B 4.5 : 1
E2
Pilot
Ratio
Load
Control
Valve
*Standard valve is set to crack at 215 Bar
(3120 PSI). Valve to be set to 1.3 times
maximum load induced pressure.
Code Body Material
A Aluminum
S Steel
Code Porting
310 3/8″ BSP (main) 1/4″ BSP (aux)
318 3/8″ SAE (main) 1/4″ SAE (aux)
312 3/8″ BSP Dual Cavity
319 3/8″ SAE Dual Cavity
Code Adjustment Style / Kit No.
Z Screw Adjust
T Tamper Resistant (TC1125)
Y Preset (Standard)
020
Code Cracking Pressure
Omit for no setting (Standard)*
Specify setting if required
Body
Material
PortingLine Body
LB10
Order Bodies Separately
12
(0.47) max
'Z'
25
(0.99)
'Y'
19.5
(0.77)
37
(1.46)
M18 x 1.5
5 AF Hex socket
22 AF Hex
30 Nm
22 lb ft
torque
17 AF Hex
12 Nm
9 lb ft
torque
(1)
(3)
(2)
