Catalog HY15-3501/US
LM31
Load Control Valve
Series E6C1, E6K1, E6P1
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. 3
Port, Independent of Back Pressure, Vented to Atmo-
sphere. Pilot assisted, designed for motion control
applications. For additional information see Technical
Tips on pages LM1-LM4.
Features
•
Spring chamber isolated from system back pressure by
double seal, eliminating vent port leakage and need for
separate drain line
•
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
•
Fully sealed pilot for high efficiency and accurate pilot
ratio
•
Three pilot ratios available, 1:1, 3:1 and 5:1
•
Adjustable and tamper resistant versions available
•
All external parts zinc plated
Specifications
Technical Information
Performance Curves
Rated Flow 60 LPM (16 GPM)
Pressure 40 - 350 Bar (580 - 5000 PSI)
Sensitivity: 78 Bar (1131 PSI)
Pressure/Turn
Pilot Ratio E6C1 - 1 : 1
E6K1 - 3 : 1
E6P1 - 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 0.22 kg (0.48 lbs.)
Cavity CAVT11A
(See BC Section for more details)
(2)
(3)
(1)
(1)
(2)
(3)
Flow (Q)
40
10.6
30
7.9
10
2.6
20
5.3
LPM
GPM
0
50
13.2
60
15.9
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
E6K1
E6P1
E6C1
PILOT PRESSURE WITH
100 BAR LOAD
Pressure Drop vs Flow
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
73
20
10
15
5
290
PSI Bar
145
218
PressurDrop Bar, PSI
Flow (Q)
40
10.6
30
7.9
10
2.6
20
5.3
LPM
GPM
0
50
13.2
60
15.9
PILOTED OPEN 1 to 2
FREE FLOW 2 to 1
Load Control Valve
Series E6C1, E6K1, E6P1
Catalog HY15-3501/US
LM32
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.) /
(SK30700N-1)
V Fluorocarbon /
(SK30700V-1)
Code Pilot Ratio
C 1 : 1
K 3 : 1
P 5 : 1
E6
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
826 1/2″ BSP (main) 1/4″ BSP (aux)
825 1/2″ SAE (main) 1/4″ SAE (aux)
828 1/2″ BSP Dual Cavity
827 1/2″ SAE Dual Cavity
Code Adjustment Style / Kit No.
Z Screw Adjust (Standard)
T Tamper Resistant (TC1130)
1
Code Cracking Pressure
Omit for no setting (Standard)*
Specify setting if required
Body
Material
PortingLine Body
LB10
Order Bodies Separately
10
(0.39) max
64.6
(2.54)
34.6
(1.36)
M20 x 1.5 6g
5/32" AF Hex socket
22 AF Hex
45 - 50 Nm
33 - 37 lb ft
torque
9/16" AF Hex
12 Nm
9 lb ft
torque
(1)
(3)
(2)
Locating
Shoulder
